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Cosmic Dust Catalog Volume 15 Particles from Collectors L2036 and L2021 Space and Life Sciences Directorate Solar System Exploration Divison Office of the Curator #93 Compiled by Cosmic Dust Preliminary Examination Team (CDPET) July 1997 JSC# 27897 i., ) "_ ?L. r National Aeronautics and Space Administration Lyndon B. Johnson Space Center Houston, Texas 77058
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Page 1: JSC# 27897 Cosmic Dust CatalogCosmic Dust Catalog Volume 15 Particles from Collectors L2036 and L2021 Space and Life Sciences Directorate Solar System Exploration Divison Office of

Cosmic Dust CatalogVolume 15

Particles from Collectors L2036 and L2021

Space and Life Sciences DirectorateSolar System Exploration DivisonOffice of the Curator #93

Compiled byCosmic Dust Preliminary Examination Team (CDPET)

July 1997

JSC# 27897

i., )

"_ ?L. r

National Aeronautics and

Space AdministrationLyndon B. Johnson Space Center

Houston, Texas 77058

Page 2: JSC# 27897 Cosmic Dust CatalogCosmic Dust Catalog Volume 15 Particles from Collectors L2036 and L2021 Space and Life Sciences Directorate Solar System Exploration Divison Office of

Cosmic Dust Catalog, Volume 15Contents

1. Introduction

2. Processing of Particles

3. Preliminary Examination of Particles

4. Catalog Format

5. Analyses of Reference Materials

6. Sample Requests

7. Acknowledgements

8. Standard Spectra

9. Particle Descriptions

• C Type

• TCN Type

• TCA Type

• AOS Type

1. Introduction

Since May 1981, the National Aeronautics and Space Administration (NASA) has used aircraft to collect

cosmic dust (CD) particles from Earth's stratosphere. Specially designed dust collectors are prepared forflight and processed after flight in an ultraclean (Class-100) laboratory constructed for this purpose at the

Lyndon B. Johnson Space Center (JSC) in Houston, Texas. Particles are individually retrieved from thecollectors, examined and cataloged, and then made available to the scientific community for research.

Cosmic dust thereby joins lunar samples and meteorites as an additional source of extraterrestrial materialsfor scientific study.

This catalog summarizes preliminary observations on 468 particles retrieved from collection surfaces L2021and L2036. These surfaces were flat plate Large Area Collectors (with a 300 cm2 surface area each) whichwas coated with silicone oil (dimethyl siloxane) and then flown aboard a NASA ER-2 aircraft during a

series of flights that were made during January and February of 1994 (L2021) and June 7 through July 5 of1994 (L2036). Collector L2021 was flown across the entire southern margin of the US (California toFlorida), and collector L2036 was flown from California to Wallops Island, VA and on to New England.These collectors were installed in a specially constructed wing pylon which ensured that the necessary levelof cleanliness was maintained between periods of active sampling. During successive periods of high

altitude (20 km) cruise, the collectors were exposed in the stratosphere by barometric controls and thenretracted into sealed storage containers prior to descent. In this manner, a total of 35.8 hours of stratospheric

exposure was accumulated for collector L2021, and 26 hours for collector L2036.

2. Processing of Particles

Particle mounts designed for the JEOL 100CX scanning transmission electron microscope (STEM) arecurrently the standard receptacles for CD particles in the JSC laboratory. Each mount consists of a graphite

frame (size -3x6x24 mm) onto which a Nucleopore filter (0.4 Ix m pore size) is attached. A conductive coatof carbon is vacuum evaporated onto the mount and then a microscopic reference pattern is "stenciled" ontothe carbon-coated filter by vacuum evaporation of aluminum through an appropriately sized template.Particles are individually removed from collectors using glass-needle micromanipulators under a binocular

stereo- microscope. Each particle is positioned on an aluminum-free area of a Freon-cleaned (Freon 113),carbon-coated filter and washed in place with hexane to remove silicone oil. Each mount is normally

limited to 16 particles. All processing and storage of each particle is performed in a Class-100 clean room.

Page 3: JSC# 27897 Cosmic Dust CatalogCosmic Dust Catalog Volume 15 Particles from Collectors L2036 and L2021 Space and Life Sciences Directorate Solar System Exploration Divison Office of

This catalogis thefifth to beproducedfrom theLargeAreaCosmicDustCollectors(LACs). Thesecollectorshaveapproximatelyoneorderof magnitudemorecollectionsurfaceareathantheconventionalcollectorsusedfor CosmicDustCatalogs1-10.

3. Preliminary Examination of Particles

Each rinsed particle is examined, before leaving the Class-100 clean room processing area, with a

petrographic research microscope equipped with transmitted, reflected and oblique light illuminators. At amagnification of 500X, size, shape, transparency, color, and luster are determined and recorded for each

particle.

After optical description, each mount (with uncoated particles) is examined by scanning electronmicroscopy (SEM) and X-ray energy-dispersive spectrometry (EDS). Secondary-electron imaging of eachparticle is performed with a JEOL-35CF SEM at an accelerating voltage of 20 kV. Images are therefore ofrelatively low contrast and resolution due to deliberate avoidance of conventionally applied conductive

coats (carbon or gold-palladium) which might interfere with later elemental analyses of particles. EDS dataare collected with the same JEOL-35CF SEM equipped with a Si(Li) detector and PGT 4000T analyzer.

Using an accelerating voltage of 20 kV, each particle is raster scanned and its X-ray spectrum recorded overthe 0-10 keV range by counting for 100 sec. No system (artifact) peaks of significance appear in the spectra.

It should be pointed out that the SEM/EDS procedure used in preparing this catalog is different than thatused in preparing Cosmic Dust Catalogs, Volumes 1-3 and 8. In these catalogs, EDS analysis was

performed using the JEOL 100CX STEM operated at 40 kV. Only the EDS spectra exhibit differences thatare likely to be noticed. These differences are a slightly higher background and more efficient excitation ofhigh atomic number elements for EDS spectra collected at 40kV relative to those collected at 20kV.However, each catalog includes spectra of the same selected comparison standards, which allows

comparison of spectra from one catalog to the next to be made. Please refer to Section 5 for a more

complete discussion.

Following SEM/EDS examination, each particle mount is stored in a dry nitrogen gas atmosphere in asealed cabinet.

4. Catalog Format

Each page in the main body of the catalog is devoted to one particle and consists of an SEM image, an EDSspectrum, and a brief summary of preliminary examination data obtained by optical microscopy. Theunique identification number assigned to the particle appears at the top of the page. Sources of the

descriptive data are as follows:

• SIZE (It m) is measured using the original SEM image and its known magnification factor. For an

irregularly shaped particle, the minimum dimension in the plane of the field of view is located anddetermined; then a second (maximum) dimension is measured at a right angle to the first. For a

spherical or equidimensional particle, only a single size is recorded.• SHAPE is generalized to be spherical (S), equidimensional (E), or irregular (I). Particles having

shape intermediate between S and E, or E and I, are not uncommon and may be denoted as S/E orE/I, etc.

• TRANSPARENCY (abbreviated TRANS.) is determined by optical microscopy to be transparent

(T), translucent (TL), or opaque (O). Significant variations in transparency within a particle areannotated on the SEM image.

• COLOR is determined by optical microscopy using oblique (fiber optic, quartz halogen) illumination

supplemented with normal reflected (tungsten-lamp) illumination. The distinction of dark (Dk.) from

light (Lt.) particles is unambiguous, although the distinction of colorless (CL) from pale-coloredconditions is sometimes problematical. Complex colorations of individual particles may be noted inthe "COMMENTS" column and annotated on the SEM image.

• LUSTER is determined by optical microscopy using reflected normal (tungsten-lamp) illumination

Page 4: JSC# 27897 Cosmic Dust CatalogCosmic Dust Catalog Volume 15 Particles from Collectors L2036 and L2021 Space and Life Sciences Directorate Solar System Exploration Divison Office of

andsupplementedwith oblique(fiberoptic,quartzhalogen)illumination.Commonlyapplieddescriptions,adoptedfrom mineralogicalusage,includedull (D), metallic (M), submetallic(SM),subvitreous(SV), vitreous(V), andresinous(R). Lusterstransitionalbetweencategoriesor difficultto identify areindicatedaccordingly(D/SM,SV/V, etc.).TYPE indicatesaprovisionalfirst orderidentificationof eachparticlebasedon its morphology(from SEM image),elementalcomposition(from EDSspectrum),andopticalproperties.Weemphasizethat,for catalogpurposes,typesaredefinedfor their descriptiveandcuratorialutility, notasscientificclassifications.Thesetentativecategorizations,which reflectjudgmentsbasedon thecollectiveexperienceof theCDPET,shouldnotbeconstruedto befirm identificationsandshouldnotdissuadeany investigatorfrom requestinganygivenparticlefor detailedstudyandmorecompleteidentification.Thepreciseidentificationof eachparticlein our inventoryis beyondthescopeandintentof our collectionandcurationprogram.Indeed,thereliable identificationandscientific classificationof cosmicdustis oneof manyimportantresearchtasksthatwehopethiscatalogwill stimulate.We indicateparticle"TYPE" only to aidtheusersof this catalog(especiallythosenewto smallparticleanalysis)in distinguishingpossiblecosmicdustparticlesfrom otherparticleswhich areinvariablycollectedduringstratosphericdustsampling.In this catalog,particlesareorganizedaccordingto theirtype.Categoriesusedin this catalogaredefinedasfollows:

C: Cosmicdust(varietyunspecified)or otherextraterrestrialmaterial.In thestrict sense,"cosmicdust"refersonly to thoseparticleswhichhavenotbeenmodifiedduringpassagefrominterplanetaryspaceto Earth'sstratosphere.In this catalog,though,particletype"C" is usedtoconvenientlygrouptogetherall particleswhicharejudgedto beof extraterrestrialorigin,includingthosethathaveapparentlyexperiencedstrongablationalheatingor melting.Type"C" particlesareprovisionallyidentifiedasthosehavingoneof thethreefollowing setsofattributes:

• (a)irregularto spherical,opaque,dark-coloredparticlescomposedmostly of Fewithminor Sand/orNi.

• (b)irregular to spherical, translucent to opaque, dark-colored particles containing variousproportions of Mg, Si, and Fe with traces of S and/or Ni.

° (c)irregular to faceted or blocky, transparent to translucent particles containing mostlyMg, Si, and Fe but with traces S and/or Ni.

Category (a) and (b) particles commonly display either complex, porous aggregate typemorphologies or distinctively spherical shapes and dull to metallic lusters which distinguishthem from terrestrial minerals. Their EDS spectra are reminiscent of those exhibited bymeteoritic Fe-NiS minerals, or combinations of Fe-Ni-S phases with olivine and/or pyroxene.

Category (c) particles display morphologies and EDS spectra which suggest that they arefragments of olivine or pyroxene crystals, neither of which are significant components ofstratospheric volcanic ash. Particles which do not fall easily into categories (a), (b), or (c) but

which possess some of the same attributes may be classified here as "C?".

TCA: Terrestrial contamination (artificial or man-made). Particles included in the "TCA"

category are commonly irregular in shape (though a few may be spherical) and may betransparent, translucent, or opaque. Their EDS spectra commonly show AI, Fe, or Si as the

principal peaks but with a variety of minor peaks including those of Cd, Ti, V, Cr, Mn, Ni, Cu,or Zn and at abundances which are frequently much greater than those expected in common

minerals. However, such compositions are similar to those expected for certain metal alloys. Insome cases, a high intensity (relative to intensities of characteristic X-ray peaks) of continuum

radiation occurs in the EDS spectrum, suggesting that low atomic number elements notdetectable by the EDS (e.g., H, C, N, O) are abundant in the particle. Such "TCA" particles are

tacitly inferred to by synthetic carbon based materials. (This category probably includesparticles produced by or derived from aircraft operation or collector hardware, or possibly

spacecraft debris. However, some of these particles are worthy of additional research and mayrepresent true extraterrestrial "low Z" material).

TCN: Terrestrial contamination (natural). "TCN" particles may be transparent to opaque and

may exhibit a variety of colors. However, they are commonly irregular in shape and

distinctively rich in Si and A1 with minor abundances of Na, K, Ca, or Fe. Some Fe-S particlesare classified as TCN despite the fact that they may well be extraterrestrial. This action is due

Page 5: JSC# 27897 Cosmic Dust CatalogCosmic Dust Catalog Volume 15 Particles from Collectors L2036 and L2021 Space and Life Sciences Directorate Solar System Exploration Divison Office of

to the lackof conclusiveinvestigationsregardingtheseparticularparticles.Manyparticlescontainingonlylow-Z elementsarealsoclassifiedTCN for thesamereason.MorphologiesandEDSspectraof most"TCN" particlescomparefavorablywith respectivepropertiesof silicapolymorphs,feldspar,orsilicic volcanicglass,threematerialswhichareprincipalcomponentsof stratosphericvolcanicash.In addition,platy orporousaggregate-typeparticlesof light colorandSi, A1richcompositionmaybesilicic clayminerals,commonphasesin Earth'ssurfacesoils.Irregular,reddishFerich particles may also be products of terrestrial rock weathering.

Recognition of these and other phases as "TCN" particles is based mostly on CDPET'scollective mineralogical experience and comparison with reference samples. Less commonly,

the "TCN" category may include distinctive particles with apparently non-random shapeswhich are rich in low atomic number elements (as inferred from their EDS spectra having high

levels of continuum x radiation and relatively small peaks for characteristic X-rays). Those

rare particles are distinguished from "TCA" particles by their unusual, organized morphologies

and probably represent biological contaminants.

AOS: Aluminum or aluminum oxide sphere. An AOS is transparent, subvitreous, vitreous tometallic in luster, colorless to pale yellow and at least approximately spherical. However,

shape may range from nearly perfect sphericity to pronounced ellipticity and surface texture

may range from very smooth to rough. Other spheres or irregularly shaped material may beattached to its surface. A1 is the distinctively dominant (or only) peak in its EDS spectrum. A

sphere displaying the attributes of an AOS except with major elements in addition to A1 maybe listed as "AOS?" or "?". Transparent A1 rich particles of irregular shape would probably belisted as "TCA". Most AOS particles are products of solid fuel rocket exhausts.

Again, this system for provisional classification of particles is presented only as a first order attemptto distinguish particles which are probably extraterrestrial in origin from those which are probablycontaminants. All particles will require careful research examination before they can be satisfactorilyidentified.

COMMENTS are included for particles with special features or histories. Any large cluster particles,

which have broken apart on the LAC plate, have small portions present in the catalog as different

"sibling" grains; the comments reflect these relationships. For example, any particle with a clusternumber designation in the comments field represents a much larger parent particle remaining on theLAC plate, which is also available for allocation in part or in whole.

5. Analyses of Reference Materials

The usefulness of the SEM images and EDS spectra provided for particles in this catalog is enhanced by

comparison with similar data products obtained for mineral standards of known composition. Accordingly,

a typical EDS spectrum is presented for each of three standard minerals prepared as polished grain mounts(San Carlos olivine, USNM 111312/444; diopside JLC 99 63; Kakanui hornblende, USNM 143965;Allende Meteorite Bulk Powder, NMNH 3529). Analyses of these optically flat surfaces eliminate

inter-sample geometrical variations so that effects of detection limits and compositional variations, ingeneral, on relative peak heights in the raw spectra can be more readily assessed. Even so, the polishedgrain spectra should not be over interpreted because no corrections have been attempted for atomic number,

absorption, or fluorescence effects. The spectra are presented simply as additional aids to the meaningfuluse of the sample particle EDS spectra. Investigators who might wish to compare performancecharacteristics of their EDS analytical systems with those of the system used by CDPET in preparing these

catalog data should contact Curator/Cosmic Dust at the address given in Section 6. A short-term loan of apolished grain mineral standard can then be arranged.

As pointed out in Section 3, the EDS spectra included in this catalog were obtained using a primary electronenergy of 20 kV whereas spectra in Catalogs 1-3 and 8 were obtained with a different instrument operatedat 40 kV. Although the effects on EDS spectra to be expected from such a change are well known from

X-ray spectrometric analysis, they are worth pointing out to avoid confusion among the readers of thiscatalog. The major effects of concern to Cosmic Dust Catalog users can be seen by comparing the two

"Allende (CV3) Meteorite Bulk Powder" spectra, one of which was obtained at 20 kV and the other at 40

Page 6: JSC# 27897 Cosmic Dust CatalogCosmic Dust Catalog Volume 15 Particles from Collectors L2036 and L2021 Space and Life Sciences Directorate Solar System Exploration Divison Office of

kV, as presented in Cosmic Dust Catalogs 1-3 and 8 (only spectra collected at 20kV are presented in thiscatalog). In the 20 kV spectrum, the Si peak is more intense than the principal peak of Fe whereas the

opposite is true for the 40 kV spectrum. In general, the 20 kV spectra in this catalog will show peaks oflight elements enhanced relative to peaks of heavy elements when compared with 40 kV spectra publishedin Catalogs 1-3 and 8. The explanation is based both on geometrical differences between X-ray paths in the

two EDS systems (the JEOL-35CF system is actually more favorable for light element analysis) and onelectron and X-ray physics (X-ray emission by heavy elements is more intense at 40 kV than at 20 kV).Thus, readers are cautioned against attempting to quantitatively intercompare 40 kV spectra with 20 kV

spectra. Still, the spectra in each catalog should continue to serve as originally intended. Namely, thesample and standard spectra in any given catalog will represent a self consistent data set.

6.Sample Requests

Scientists desiring to perform detailed research on particles described in this catalog should apply in writingto:

Curator/Cosmic Dust

Telephone: (281 ) 483-5128Code SN2

NASA/Johnson Space Center

FAX: (281) 483-5347Houston, Texas 77058U.S.A.

Sample requests should refer to specific particle identification numbers and should describe the research

being proposed as well as the qualifications and facilities of the investigator making the request. Publicationreprints are frequently useful in sample allocation considerations. Additionally, requests for particles not yetpassed through preliminary examination will be considered if the requester can demonstrate a strong needfor them. NASA will arrange for a review of the scientific merits of each request and will inform the

requester of the results. Approval of a sample request does not imply or include funding for the proposedresearch. Questions about NASA funding should be directed to:

Dr. Joseph Boyce

Discipline ScientistPlanetary Materials and Geochemistry ProgramCode SR

NASA Headquarters

Washington, DC 20546

Although foreign scientists are welcome to request samples, NASA cannot provide funds to be spent

outside the U.S.A. by citizens of other countries.

7. Acknowledgements

The ER-2 flight personnel at NASA/Ames Research Center, Moffett Field, California) performed theloading and unloading of the cosmic dust collectors on the ER-2 aircraft and provided flight log data andother critical assistance.

Eugene Jarosewich (Smithsonian Institution, Washington, D.C.) kindly provided mineral standards andthe Allende chondrite powder.

Standard Spectra

Page 7: JSC# 27897 Cosmic Dust CatalogCosmic Dust Catalog Volume 15 Particles from Collectors L2036 and L2021 Space and Life Sciences Directorate Solar System Exploration Divison Office of

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Page 8: JSC# 27897 Cosmic Dust CatalogCosmic Dust Catalog Volume 15 Particles from Collectors L2036 and L2021 Space and Life Sciences Directorate Solar System Exploration Divison Office of

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Page 9: JSC# 27897 Cosmic Dust CatalogCosmic Dust Catalog Volume 15 Particles from Collectors L2036 and L2021 Space and Life Sciences Directorate Solar System Exploration Divison Office of

Cosmic Dust Catalog 15 -Particle Particle Descriptions

The links to the individual particles point to .pdf (Portable

Document FormaO files. To view these documents you may

need to configure Acrobat Reader as your helper application.

Particle I Size IShapelTransl

L2021 F4 7 S 1-

L2021 F10 18 S I

L2021F12 8 S 1-

L2021 F14 14x6 rL

L2021 F15 6 S r

L2021F16 7 ,S I-

L2021 F18 7 S r

L2021F19 8 S _)

L2021 F20 10x4 S :9

L2021 F23 20 S D

L2021G1 8 S r

L2021 G2 9 S r

L2021 G3 8 S I-

L2021 G4 8 S I

_2021G5 7 ;S T

2021 G6 6 5 I

.2021G7 8 -3 1-

_2021G8 8 ._ T

.2036128 15xll S 0

_2036K3 6 S T

_2036K10 11 5 O

.2036N5 10 ._ 0

_2036N33 27 S T

.2021A1 16

_2021A5 9 =-

_2021A6 ;_ =

_2021A7 14x9

.2021B1 32x26

_2021 B2 17x16 -=

_2021B4 14

.2021B5 30x60

L2021B6 10x6

L2021B7 20x12

L2021 B8 8xl 2

L2021B9 _,0x30

L2021B10 16

-2021Bll 1

L2021B13 1 S

L2021B14 25x20

L2021B15 B S

L2021B16 5 S

L2021 B17 _,0x34

L2021B18 18x12

L2021B19 30x25

[.2021C1 !0x15

L2021C3 26x18 E

.2021 C4 5 E

L2021C5 32x10

L2021C6 20x16

L2021C7 23x10 E

L2021C8 !3x16

L2021C9 25x23 E

L2021C10 10 E

L2021C12 5

L2021C13 12<10

L2021C14 12<6

L2021C15 36x25

L2021 C17 _)5x65

L2021C18 5x14

L2021C19 14 S

L2021C20 14 S

L2021 C21 24 E

L2021D2 26x16

L2021 D3 26

Color ILustsrp ypa IAluminum Oxide S )hera

3olorless V _.OS

3olorless V AOS

3olorlass V AOS

Crown SV AOS

3olorless V AOS

3olorlass V AOS

3olorless V AOS

_]lack M AOS

3lack D AOS

/Vhite SV _,OS

Colorless V AOS

Colorless V AOS

3olodess V _OS

3olodess V _,OS

Colodess V _,OS

Colodess V '_OS

Colorless V _OS

Colorless V _OS

Black P _OS

Colorless V _OS

Silver M _,OS

Silver M _OS

Colorless V _OS

Cos _tic Dust

TL Black-White D 3

O Black D 3

O ]lack D 3

O Black-Gray D 3

C) Black-Gray D 3

O Black-Gray D 3O Black D 3

O Black P 3

O ]lack P 3

O Black D C

O Black P C

O Black D _-

O Black D C

O Black P C

O ]lack P C?

O Black D 3?

O Black D C

O ]lack O C?

O Black-Gray D C

O Black-Gray P C/

O Black M C

O Black-Gray D C

O Black-Gray D C?/

O Black D C

O Black D C

D B lack M C

O Black M C

O Black D C

O Black D C

O ]lack D C

O Black D C

O Black D C

O Black D

O/TL ]lack-Colorless P C

O Black M C

O Black D C

O _,lack P C?

O Black P C

O 3lack D C

TL White SV C

O Gray IM C

Cluster 1

Cluster 4

Cluster 5

Cluster 6

Pair of particles

Comments I Photo #

_)7E00411

_)7E00417

97E0041_

97E00421

97E00422

_7E00423

97E00425

_7E0042_

_)7E00427

97E00430

_7E00437

g7E00438

_7E0043_

97E0044(_

g7E00441

97E00442

97E00443

97E00444

97E00174

971500194

97E00201

97E0028E

97E0031

g7E00328

97E0033-_

97E00333

97E00334

97E0033E

97E0033E

97E0033E

97E0033_

97E0034C

97E00341

97E0034_

97E00343

97E00344

97E0034_ =

97E0034 i

97E0034E

97E0034_

97E0035C

97E00351

97E0035;

97E00353.

97E0035_

97E0035_

97E0035

97E0035_

97E0035. ¢

97E0036(

97E00361

97E0036:

97E0036E

97E0036_"

97E0036t

97E0036_

97E0036_

97E0037(

97E00371

97E0037_

97E0037_

97E0037,_

97E003/¢

97E0031

Page 10: JSC# 27897 Cosmic Dust CatalogCosmic Dust Catalog Volume 15 Particles from Collectors L2036 and L2021 Space and Life Sciences Directorate Solar System Exploration Divison Office of

L2021D514x10L2021D615x12

L2021D7 25x16

_2021D8 27x14

L2021D9 12

L2021D10 12

L2021 Dll 70x65

L2021D12 10x8

_2021D13 50x30

_2021 D14 7

_2021E1 14

_2021E2 20x16

_2021F17 10

[L2021G21 11IL2036A2 25x15

_2036A3 8x6

_2036A4 14x8

!L2036A5 6

L2036A6 5

L2036B1 10x3

L2036B2 9x3

_2036B3 20xll

_2036B4 )

_2036B5 5

_2036B6 5

_2036B7 3x3

_203688 i'x3

.2036C1 ]

-2036C2 3x3

L2036C3 5x3

L2036C5 5

L2036C6 5

L2036C9 Z2xl 1

L2036Cll 9,x6

L2036C12 10x9

L2036C13 5x4

L2036D1 11

L2036D2 _x2

L2036D3 11 E

L2036D4 15x5

L2036D5 5

L2036D6 13x6

L2036D10 11 E

L2036E1 15 S

L2036E3 B S

.2036E6 12x8

L2036E1532x18

L2036Ef6 16 E

L2036E17 10x8 E

L2036E18'gx6

L2036E19!20x12

L2036E21B E

.2036E22 12)(7

L2036E23 13xll

L2036E24 10x8

L2036E25 14x7

D

0

3

D

D

3

D

0

0

0

0

0

O

O

TL

0

O

O

0

T

T

0

O

O

O

O

O

O

O

O

TL

TL

O

TL

O/TL

O

O

O

O

O

O

O/TL

O

O

O

O

O

O

O/TL

TL

O

O

O

O/TL

TL

o/-rL

3lack

3lack

3lack

3lack

3lack

3ray

Sray

3lack

_lack

Black

Black

Black

Black

Black

Black-White

Black

Black

Black

Black

Colorless

Colorless

Black-Colorless

3lack-Colorless

Black-Colorless

Black-Colorless

Black-Colorless

Black-Colorless

Black-Colorless

Black-Colorless

Black-Colorless

White

White

Black

White

B lack-Colorless

Black

Black-White

]lack

Black

Black

Black

Black-Brown

Black

Black

Black

Black

Black

Black

Black-Colorless

Colorless

Black-Brown

Black

Black

Black-Brown

Colorless

Black-Colorless

D

P

SM

SM

SM

D

D

P

SM

P

M

M

P

M

V/SV

D

D

D

D

V

V

D/SV

D

D

P

D/SV

D/SV

O/SV

O/SV

O/SV

M

M

D

SV

D

D

D

D

D

D

D

PISV

D

=/SV

3V

_/SV

SV

SV/D

C

C

C

C

C

C Related to L2021 Dll

C Related to L2021 D10; Field

of particlesC

C

C

C

C

iC:C

3 Cluster 2

,3 Cluster 2

3 Cluster 3

`3 Cluster 4, Related to L2036A6

.3 Cluster 4, Related to L2036A5

.3 Cluster 7, Related to L2036B2

.3 Cluster 7, Related to L2036B1

.3 Cluster 9, Related to L2036B4-B8

3 Cluster 9, Related to L2036B3, B5-B8

C, Cluster 9, Related to L2036B3-B4, B6-B8

3 Cluster 9, Related to L2036

B3-B5, B7-B8

C, Cluster 9, Related to L2036B3-86, B8

C Cluster 9, Related to L2036B3-B7

C Cluster 13

G? Cluster 14, Related toL2036 C3

C? Cluster 14, Related toL2036 C2

C Cluster 16, Related toL2036 C6

C Cluster 16, Related toL2036 C5

C Cluster 17

C Cluster 18, Related to_2036 C12-C13

C Cluster 18, Related toL2036 Cll, C13

C Cluster 18, Related toL2036 C11-C12

C Cluster 19, Related toL2036 D2

C Cluster 19, Related toL2036 D1

C Cluster 20, Related toL2036 D4-D5

C Cluster 20, Related toL2036 D3, D5

C Cluster 20, Related toL2036 D3-D4

C ICluster 21

C 3luster 24, Light area is richn AI

C

C?

C

C

C

C

C

C

C

C

C

C?

C

g7E0037£

_7E00380

_7E00381

_7E00382

97E00383

_7E00384

97E00385

_7E0038E

97E0038797E00388

97E00391

97E00392

97E00424

g7E00457

97E00008

97E00009

97E00010

97E00011

97E00012

97E00013

97E00014

97E00015

97E00016

97E0001/

97E00018

97E00019

97E00020

97E00021

97E00022

97E00023

97E00025

97E00026

97E00029

97E00031

97E00032

97E00033

97E00034

97E00035

97E00036

97E00037

97E00038

97E00039

97E00043

97E00044

97E00046

97E00049

97E00058

197E0005997E00060

97E00061

97E00062

97E00064

97E00065

_7E00066

}7E00067

)7E00068

Page 11: JSC# 27897 Cosmic Dust CatalogCosmic Dust Catalog Volume 15 Particles from Collectors L2036 and L2021 Space and Life Sciences Directorate Solar System Exploration Divison Office of

L2036E26 11 !?L2036E27 6x4

L2036F1 16 IS

L2036F2 22x14 E

L2036F3 19x12

L2036F4 5x4

L2036F10 14x10

L2036F11 22x14

L2036F12 1lx9

L2036F14 15x14 E

L2036F17 13 S

L2036F18 16x10

L2036F19 15x12

L2036F24 13x9

L2036F25 5 IS

L2036G2 29x18

L2036G8 25x23

L2036G9 6x3

L2036G10 22)(13

L2036G11 33x22

L2036G12 23x19

L2036G13 30x23

L2036G14 27x23

L2036G15 20x14

L2036G16 14x12

L2036G 17 39x33

L2036G18 9x7

L2036G19 8

L2036G20 14xl 0

_2036H1 20xl 0

_2036H2 36x24

_2036H4 37x28

_2036H5 28xl 5

.2036H6 33x22

_2036H7 15x13

_2036H8 12 =

_2036H9 44x33

_2036H14 35x26

_2036H15 i16x9

_2036H17 150x30

_2036H18 24x16

.2036H19 ]7

L2036H20 23xl 7

L2036H21 31x20

L2036H22 24x18

.2036H23 28x14

_2036H25 $4x40

.2036H26 35x22

.203611 _ E

_.203612 15xl 2

L203613 Z4x22L203614 !8xl 3

L203615 Z4xl 6

L203616 13x8

.203617 14x8

L203618 26xl 9 E

L2036112 16x12

L2036114 25x19

L2036115 25x14

L2036118 19x16

L2036119 17x10

L2036120 35x24

L2036121 !6x18

L2036122 17x17

L2036123 22)(20

L2036124 44x26

L2036125 24x12

L2036126 33x19

L2036127 22x13

L2036129 17x13

L2036J1 39x26

L2036J2 26x14

L2036J3 14x8

L2036J10 24x19

L2036J12 9x8

L2036J13 12x7

L2036J15 15x10

D ESlack D C

D 3lack D C

D Silver VI C?

D 3lack P C

3 3lack D C?

:D 3lack D C

_) 3lack P C?

O/TL 3lack/Brown SV/D C?

:D 3lack P C

:D Sliver rvl C

_) 3lack M C?

D 3lack M C

D 3lack P C

:D/TL 3lack-Colorless D/SV C

D Slack P C

D 3lack M C

D 3lack SM C

O Slack P C

:D _]lack SM C?

DITL 3lack/White D/SV C

:)/T 3lack-Colorless PN C

:D 3lack P C

:)/TL 3lack-Colorless SM/S_ C

D/TL 3lack-White P/SV C

D/TL 3lack-Brown P/SV _IC

D/TL 3lack-White SM/S_ iC?

D 3lack P ,3?

D Black D 3

D 3lack P ,3

0 Black SM ,3

D ESlack D 3

0 ESlack D 3

0 Black D 3

0 Gray-Brown M 3C) Black SM 3

O Black D 3

E) Silver M 3?

O Black D 3

O Black O 3?

O Black M 3?

0 Black D ,3

O Black D 3

O Black P C,

O Black SM C

O Black D C

O Black SM C

O Gray SM C

O Gray SM CO Silver P C

O/T ]lack-Colorless DN C

O Black P C

TL White SV C

O Black SM C?

O Black D C?

0 Black P C?

0 Black P C

O Black P C?

O Gray D C

O Gray D CO Gray D CO Black P C

TL Black-White D/SV C

O Black-Brown 'D C

O Gray D C

O Gray D CTL Nhite-Brown SV C

O Gray SM CTL Brown-Colorless ISV C?

O Black ID C

O Black D C?

O Black IIM CTL Colorless SV C?

O Black Vl C

O Black-Gray SM C?O Black SM C

O Black SM C

O/T Black-Colorless =N C?

g7E00069

_7E00070

_7E00073

_7E00074

_7E00075

_7E00076

_7E00082

_7E00083

_7E00084

_7E00086

_7E00089

_7E00090

_7E00091

_7E0009E

97E00097

97E00100

_7E0010E

_7E00107

97E00108

_7E0010£

97E00110

97E00111

97E00112

97E00113

97E00114

97E00115

97E00116

97E00117

97E00118

97E00119

97E00120

97E00122

97E00123

97E00124

97E00125

97E00126

97E00127

97E00132

97E00133

97E00135

97E00136

97E00137

97E00138

97E00139

97E00140

97E00141

97E00143

97E00144

97E00147

97E0014&

97E00149

97E00150

97E00151

97E00152

97E00153

97E00154

97E00158

97E00160

97E00161

97E00164

97E00165

97E00166

97E00167

97E00168

97E00169

97E00170

97E00171

97E00172

)7E00173

97E00175

97E00177

97E00178

97E00179

97E00186

97E00188

97E00189

97E00191

Page 12: JSC# 27897 Cosmic Dust CatalogCosmic Dust Catalog Volume 15 Particles from Collectors L2036 and L2021 Space and Life Sciences Directorate Solar System Exploration Divison Office of

L2036K30 18x14 TL

_2036L6 18x14 I

_2036L10 5 3 O!L2036L13 9x6 D/T

L2036L19 24x16 ]L

L2036L20 19x13 rL

L2036L23 12x7 ].L

L2036M14 8x5 r

_L2036M15 1lx8 I

_2036M20 12 D

.2036M22 14xl 0 ].L

2036M28 8x6 O

_2036N4 14x10 TL

_2036N10 12)(10 TL

_2036Nll 14x12 O

_2036N12 16x12 D

_2036N14 1lx7 O

_2036N15 22:<19 ].L

.2036N17 35x14 O

.2036N18 16x12 TL

_2036N21 23x16 O_2036N34 117 S TL

_203603 3 O

_203604 4

_203605 3

_2036O6

_203607 2

_203609 _x6

L2036010 13x8

L2021 A2 7x9

L2021A3 20x16

L2021 A4 5xl 0

L2021 B3 14

L2021Cll 10 E

L2021C16 3

L2021 E4 1 S

L2021 E5 2 S

.2021E6 Z4x17 E

L2021E11 50x35

L2021 E12 ;4x42 E

.2021E14 22)(20 E

L2021F3 !0x18 E

L2021 F5 22

L2021F6 16

L2021F9 t6x12

L2021 F21 40x38 E

L2021 G9 50x3

.2021Gll 38x34

L2021G20 38

L2021H3 44x27 E

L2021 H4 30x20 E

L2021 H9 40x34

L2021H10 40x28

L2021 Hll 28x26

_2021 H12 14x10

L2021 H13 32

L2021 H14 42x24

L2021H15 22 E

L2036A1 15x8

L2036C4 3

L2036C10 22x19

.2036D7 10x8

L2036D8 9

L2036D9 4

L2036E4 17x10

L2036E9 10x6

White SV C?

Colorless V C?

Black D C?

]lack-Colorless D/SV C Field of particlesColorless-Browr SV C?

Colorless V C?

_Vhite SV C?

Colorless V C

Colorless V C?

E]lack D C

Brown-Red SV C?

E]lack D C Smaller particle_Vhite SV C?

Colorless-Browr V C

_Vhite SV C

_Vhite SV C?Black P !C?

Colorless SV iC?

_/hite-Brown SV 3?

E]rown SV ,3?

Black P ,3?

Colorless-White SV ,3

Black D ,3 Cluster 6, Related to L203604-07

Black D ,3 Cluster 6, Related to L2036O3, 05-07

Black D C, Cluster 6, Related to L203603-04, 06-07

Black D 3 Cluster 6, Related to L203603-05, 07

3lack D C, Cluster 6, Related to L203603-06

Black D C? Cluster 24, Related toL2036 O10

Black D C? Cluster 24, Related toL2036 09

"1errestrlal Contamination - Artificial or Man-Made

O Black-Gray D TCA Cluster 2

O White P TCA Cluster 3, Related to L2021A4

O White D TCA Cluster 3, Related toL2021A3

O Black-Gray D TCA

O Black D TCA

O Black D TCA

TL Red SV TCA

TL Red P ]CA

TL White SV ]CA

TL Red SV FCA

TL White SV rCA?

TL White SV TCA

TL Colorless SV ].CA?

TL Colorless SV TCA

TL Colorless SV TCA

T Colorless V TCA

TL White SV TCA

O White SV TCA

O White SV TCA

TL White l'3V TCA?

TL White "_V TCA

TL White _,V TCA

O Black-Silver Vl rCA

O White _ rCA

TL Colorless _' TCA

O Black 3 TCA

TL White SV TCA

TL White ._V TCA

TL White 3V TCA

r Colorless # TCA Cluster 1

O/T Black-Colorless =N TCA Cluster 15

O Black 3 TCA

O Black )/M TCA Cluster 22, Related to.2036 D8

O 3lack DIM TCA Cluster 22, Related toL2036 D7

O 3lack D TCA Cluster 23

O 3lack Vl TCA

I 3olorless ¢ TCA

g7E00221

_7E0022.9

_7E00233

_7E00236

_7E00242

_7E00243

_7E00246

_7E00265

_7E00266

_7E00271

_7E00273

g7E0027£

_7E00284

97E00290

97E002911

g7E00292

g7E00294

97E00295

g7E00297

g7E00298

g7E00301

g7E00314

97E00320

97E00321

97E00322

97E00323

97E00324

97E00326

97E0032_

97E00329

97E00330

97E00331

97E00337

97E00364

97E00369

97E00394

97E00395

97E00396

97E00401

97E00402

97E00404

97E00410

97E00412

97E004t3

97E00416

97E00428

97E00445

97E00447

97E00456

97E00460

97E00461

97E00466

97E00467

97E00468

97E00469

97E00470

97E00471

97E00472

97E00007

_7E00024

)7E00030

)7E00040

_7E00041

_7E00042

_7E00047

_7E00052

Page 13: JSC# 27897 Cosmic Dust CatalogCosmic Dust Catalog Volume 15 Particles from Collectors L2036 and L2021 Space and Life Sciences Directorate Solar System Exploration Divison Office of

_2036E13$4x26_2036E20]5x16

_2036E29 t4x24

.2036F5 112x8

.2036F6 _x8

_2036F7 ]0x22

_2036F8 14x13

_2036F9 24xl 1

_2036F13 26xl 1

_2036F15 24

_2036F20 25x20

_2036F21 20x14

_2036F22 1

_2036F23 5x12

_2036F26 lx9

.2036G1 36x19

_2036G3 52x26

_2036G4 53x28

.2036G6 35x18

.2036G7 8xl 5

_2036H3 3x8

_2036H10 ]5x18

_2036Hll 19x14

.2036H12 14xl 1

_2036H13 20x12

L2036H16 18x14

L2036H27 39x28

[_203619 16x14

[_2036110 20

[_2036111 24

[_2036113 16x10

[_2036130 12:<6

[-2036J4 39x26

[_2036J6 27x14

[-2036Jll 55x26

L2036K4 3

.2036K5 _8x68

.2036K7 56x44

L2036K11 57x28

[-2036K12 26x20

L2036K13 18x12

L2036K14 22x12

L2036K15 4x10

L2036K16 49x44

L.2036K17 14x10

L2036K27 14

L2036K28 40x30

L2036K31 42)(22

L2036K32 130x48

L2036L1 40x18

L2036L2 30x10

L2036L9 30x10

L2036L15 12x7

L2036L21 33x25

L2036L27 22x14

.2036M1 111x80

L2036M3 12:<8

L2036M4 12x6

L2036M9 15x12

L2036M10 16x10

L2036M12 15x10

L2036M13 12x5

L2036M19 5x5

L2036M21 20x16

L2036M23 16

.2036M25 7

L2036M26113x7

L2036M27 9x6

L2036M29112x8

L2036N1 55x33

L2036N2 22

L2036N3 24xl 5

L2036N6 16x14

L2036N8 18

L2036N9 28xl 5

L2036N13 5

O

O

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TL

O

O

O

O

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TL

O

O

O

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O

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O

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TL

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TL

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O

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TL

TL

TL

TL

TL

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O

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O

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T

T

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TL/O

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O

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O

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TL

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O

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O

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Black-Brown

Black

Black-Brown

White

Black

Black

Sliver

Black-Brown

BlacklWhite

White

Black

GrayBlack

Black-Colorless

3lack

Silver

Black-GrayBlack-Brown

Gray-BrownSilver

Colorless

Silver

Silver

Black-Colorless

Silver

Black

]lack

Brown

Black-Brown

]lack-Silver

Colorless

Black

White

Colorless-Brown

White-Blue

Colorless

Nhite

Colorless-White

Colorless-White

Colorless-White

White

Nhite

Green

White

White

Colorless

White

White

White

White

GrayWhite

Colorless

Colorless-GrayBlack

White

Colorless

Colorless

White

Colorless

Colorless

Colorless

Colorless

Brown-Black

Brown-Red

Black

Colorless

White

White

Colorless-White

Colorless-Brown

Colorless

] rown

Black

Black

3lack

P

M

D/SV

SV

D

SM

M

SM/S_

)ISV

SV

P

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P

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D

M

M

M/SV

M

M

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M

M

DN

M

D

M

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P/SV

M

V

P

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SV

SV

V

SV

SV

SV

SV

SV

SV

SV

SV

SV

SV

SV

SV

SV

SV

SV

SV

V

SV

D

isvJ

J

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J

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]

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_V

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SV

SV

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3

rCA"CA

rCA

CA

FCA

CA

I-CA

CA

TCA

I-CA

I-CA

CA

I-CA

I-CA

CA

CA

I-CA

-CA

TCA

TCA

TCA

TCA

-CA

-CA

-CA

TCA

TCA

TCA

TCA

TCA

FCA

TCA

FCA

FCA

FCA

TCA

TCA

TCA

TCA

I-CA

TCA

TCA

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TCA

FCA

TCA

TCA

TCA

TCA

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TCA

TCA

FCA

]-CA

FCA

TCA

TCA

TCA

TCA

TCA

TCA

TCA

TCA

TCA

TCA

TCA

TCA

TCA

TCA

TCA

TCA

TCA

g7E00056

g7E00063

97E00072

g7E00077

g7E00078

97E00079

97E00080

97E00081

97E00085

97E00087

g7E00092

97E00093

97E00094

97E00095

97E00098

g7E00099

97E00101

97E00102

97E00104

97E00105

97E00121

97E00128

97E00129

97E00130

97E00131

97E00134

97E00145

97E00155

97E00156

97E00157

97E00159

97E00176

97E00180

97E00182

97E00187

97E00195

97E00196

97E00198

97E00202

97E00203

97E00204

97E00205

97E00206

97E00207

97E00208

97E00218

97E00219

97E00222

97E00223

97E00224

97E00225

97E00232

97E00238

97E00244

97E00250

97E00252

97E00254

97E00255

97E00260

97E00261

97E00263

97E00264

97E00270

97E00272

97E00274

97E00276

97E00277

97E0027897E00280

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97E0028397E00286

97E00288

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!97E00293

Page 14: JSC# 27897 Cosmic Dust CatalogCosmic Dust Catalog Volume 15 Particles from Collectors L2036 and L2021 Space and Life Sciences Directorate Solar System Exploration Divison Office of

_2036N1915x12 O E3rown-Red SV TCA

.2036N20 24x16 O White SV TCA

_2036N23 16x12 TL Red SV CA

!L2036N26 1lx9 TL Brown V 1-CA

'L2036N27 44x12 TL E3rown-Colorless V 1-CA

_2036N28 22xl 4 O Brown-Red SV I-CA_2036N29 18x12 TL E3rown-Colorless' SV rCA

.2036N36 50 3 TL fellow SV I-CA

_2036N37 ;?.8 S TL Green SV -CA

_203608 22x16 O Silver M I-CArerrastrlal Contamlnat ion - I_

_2021B12 24x18 O Black D ]-CN?

_2021C2 13x10 - O E31ack-Gray D TCN

_2021D1 ]0x45 O E31ack-Colorless D ]-CN

_2021 D15 '16 S O Black M TCN?

_2021 D16 20xl 6 = O 3lack SM CN?

_2021E3 10 = O Gray SV ]-CN

_2021 E7 20 TL Red SV TCN

.2021E8 30x16 C) Black-Red D/SV TCN?

.2021 E9 a5x90 -= TL 3lack-Brown SV TCN

_2021E10 18x14 = TL _ed SV CN

_2021E13 41x30 C) Silver M ]'CN

_2021E15 20x12 TL White SV ]-CN?

_2021E16 50x24 TL Colorless SV ]CN?

_2021E17 t6x40 TL Colorless SV ]CN?

_2021 F1 24 S T Colorless V CN

_2021 F2 30 S TL 3rown SV ]-CN

_2021 F7 !4x12 TL Colorless V ]CN

.2021 F8 _4 S TL White SV CN

_2021Fll 25x20 O Silver M ]CN?

_2021 F13 12x9 TL Colorless SV TCN

.2021 F22 20 E TL White SV TCN?

L2021 F24 20 S O White SV TCN

L2021 F25 32 O White SV TCN

L2021 F26 30 S ]L Colorless SV TCN

L2021F27 20x16 E TL Colorless SV -CN

L2021F28 20x18 E TL Colorless SV TCN

.2021 F29 22 S ]-L Colorless SV TCN

L2021G10 32x24 ]L Brown-Colorless SV TCN

L2021G12 20 S O Silver M TCN?

L2021G13 54x30 O White-Colorless SV TCN

L2021 G14 '0x50 ]L Colorless SV -CN

.2021G15 50x120 T Colorless V TCN?

L2021 G16 '0x64 O White SV TCN

L2021G 17 44x24 O Black M TCN

L2021 G18 30x23 O White SV TCN

L2021G19 25x22 E TL Colorless SV TCN

L2021H1 18x16 E O Silver M TCN

L2021 H2 24 E TL Colorless SV TCN

L2021H5 22x18 E TL Colorless SV FCN

L2021H6 _0x34 TL White-Colorless SV ]CN

L2021 H7 40x24 TL Colorless SV TCN

L2021H8 34x20 TL White-Colorless SV TCN

L2021H16 26x25 TL Colorless SV TCN

L2036C7 22x15 O/TL Black-White D/SV TCN

.2036C8 22:<11 O Black D TCN

L2036E2 7 S O Black D TCN?

L2036E5 12x8 O Black D TCN

L2036E7 5 E O Black D TCN

.2036E8 13x8 TL Brown SV TCN

L.2036E10 24x12 TL White SV TCN

L2036E12 12x9 O/TL 3lack-Red P/SV TCN

L2036E14 12 E TL Brown SV TCN

L2036E28 5 O Black D ]-CN

L2036F16 20x10 O Black D FCN

L2036G5 105x46 O/TL Black/White SMIS_ TCN

L2036H24 18x16 O 3lack SM TCNL2036H28 58x26 O Black :O TCN

L2036116 20x16 TL White-Brown SV TCN

L2036117 13x9 TL White SV TCNL2036J5 23x17 S O/TL Black-Colorless SMISVTCN

L2036J7 13x9 O Black M TCNL2036J8 50x42 TL Colorless-White ISV TCN

L2036J9 44x28 TL Colorless-White 5V/D TCN

L2036J14 10x6 O Black D TCNL2036K1 18x14 O Black P TCN?

Cluster 23

atural

g7E00299

g7E00300

97E00303

97E00306

97E00307

g7E00308

97E00309

97E00316

97E00317

97E00325

g7E00346

97E00355

g7E00375

g7E00389

97E00390

97E00393

97E00397

g7E00398

97E00399

97E00400

97E00403

97E00405

97E00406

97E0040/

97E00408

97E00409

97E00414

g7EO0415

97E00418

97E00420

97E00429

97E00431

97E00432

97E00433

97E00434

97E00435

97E00436

97E00446

97E00448

97E0044g

97E00450

97E00451

97E00452

97E00453

97E00454

97E00455

97E00458

97E0045g

97E00462

97E00463

97E00464

97E00465

97E00473

97E00027

97E00028

97E00045

97E00048

97E00050

97E00051

97E00053

97E00055

97E00057

97E00071

97E00088

97E00103

97E00142

97E00146

97E00162

97E00163

97E00181

97E00183

97E00184

97E00185

97E00190

97E00192

Page 15: JSC# 27897 Cosmic Dust CatalogCosmic Dust Catalog Volume 15 Particles from Collectors L2036 and L2021 Space and Life Sciences Directorate Solar System Exploration Divison Office of

L2036K2 6 S rL 3town SV TCN

L2036K6 28x16 D/T 3lack-Colorless D/V TCN

L2036K8 14 ]-L Vhite SV TCN

L2036K9 8 I 3olorless V TCN

L2036K18 33 S ]L _/hite SV TCN

L2036K19 44x26 YL JVhite-Silver SV TCN';

L2036K20 26x18 ]-L Colorless P TCN?.

L2036K21 28x22 ]L Colorless P TCN?I

L2036K22 25 IS ]-L Colorless P TCN

L2036K23 15xl I ]L _Vhite P TCN

L2036K24 12x10 rL _./hite P TCN'i

_2036K25 14 -- YL _Vhite P TCN? !

_2036K26 19x13 £L tVhite P TCN

!L2036K29 28x14 ]-L Colorless SV TCN

!L2036L3 22x19 ]L Colorless SV TCN

'L2036L4 28x16 £L Colorless SV TCN

L2036L5 12x9 1 Colorless V rCN

_2036L7 17x10 T Colorless V _CN

'L2036L8 12x10 TL Vhite SV rCN

L2036L11 8 £L Colorless SV FCN

_2036L12 50x44 O tVhite P rCN

'L2036L14 26x24 TL Colorless V FCN

.2036L16 22x16 TL _Vhite SV CN

.2036L17 48x34 D _Vhite SV I-CN

_2036L18 22x19 D 3rown-Colorless SV rCN

_2036L22 14x12 TL _hite SV FCN

_2036L24 10x6 TL _Vhite SV rCN

_2036L25 24x13 TL _/hite SV rCN

_2036L26 il 2)(8 TL _hite SV ]-CN

_2036L28 12)(10 T Colorless-Brown V ]CN

_2036M2 16x14 T Colorless V CN

_2036M5 26x21 O _Vhite SV CN

_2036M6 22x20 O _/hite SV ]-CN

_2036M7 i' O E]lack D ]CN?

.2036M8 4x10 O Black D ]CN

L2036M11 30 O White SV ]CN

L2036M16 22x14 T Colorless SV -CN

L2036M17 29x24 T Colorless V TCN

L2036M18 _,4x19 T Colorless V TCN

L2036M24 5 S O Brown-Red SV £CN

L2036N7 22x19 TL White SV TCN?

L2036N22 16x14 TL Colorless V TCN?

L2036N24 16x14 TL White SV TCN

"2036N25 6x7 O Black P TCN

_2036N30 10x9 TL Brown-Black V TCN

L2036N31 33x26 TL White SV TCN?

L2036N32 35x24 TL White SV -CN?

L2036N35 28xl 3 TL Brown-White SV TCN?

L203601 _, O Black D TCN

L203602 /'x5 O Black D TCN

Two related grains

Cluster 5, Related to L203602

Cluster 5, Related to L2036O1

97E00193

_7E00197

_7E00199

_7E00200

_7E0020g

_7E00210

_7E00211

_7E00212

_7E00213

97E00214

_7E00215

_7E0021E

_7E00217

97E00220

97E0022E

97E00227

97E00228

97E0023C

97E00231

97E00234

97E0023E

97E00237

97E0023£

97E00246

97E00241

97E0024E

97E00247

97E00245

97E0024_

97E00251

97E00253

97E0025E

97E00257

97E0025_

97E0025£

97E0026;

97E0026_

97E0026E

97E0026£

97E0027_

97E00281

97E0030;

97E00304

97E0030_

97E0031£

97E00311

97E0031;

97E0031_

97E0031E

97E0031_

Page 16: JSC# 27897 Cosmic Dust CatalogCosmic Dust Catalog Volume 15 Particles from Collectors L2036 and L2021 Space and Life Sciences Directorate Solar System Exploration Divison Office of

L2021F23

Slz e:

Shape:

Tram:

Color:

Luster:

Type:

Comments:

20

S

0

White

SV

A0S

97E0414Z0

4BOO'

COUNTSRL

NRSAJSCCOSHICOUSlPROGRAM

L28E1F

--__---- ---. _ _ .; ,',,..:.......

ENERGYIKEVIi

I

10.8

464

Page 17: JSC# 27897 Cosmic Dust CatalogCosmic Dust Catalog Volume 15 Particles from Collectors L2036 and L2021 Space and Life Sciences Directorate Solar System Exploration Divison Office of

L2036B1

Size: 10x3

Shape: I

Trans: T

Color: Colorless

Luster: V

Type: C

Comments: C luster 7, Relatedto L2036 B2

97E00013

3666

COUNTS

HRS8JSCCOSMICDUSTPROGRP,H

L_g36B

I=E

CR

6.8 EHERCY(Y,EVI L6.9

64

Page 18: JSC# 27897 Cosmic Dust CatalogCosmic Dust Catalog Volume 15 Particles from Collectors L2036 and L2021 Space and Life Sciences Directorate Solar System Exploration Divison Office of

L2021F6

Size:

Shape:

Trans:

Color:

Luster:

Type:

16

I

TL

Colorless

SV

TCA

Comments:

97E00413

LBB

COUNTS

AL S!

T!

NnSRJSCCOSIIICDUSTPROGRP,H

L282tF

LO_Z

i

ENERGYIKEV] LB.0

341

Page 19: JSC# 27897 Cosmic Dust CatalogCosmic Dust Catalog Volume 15 Particles from Collectors L2036 and L2021 Space and Life Sciences Directorate Solar System Exploration Divison Office of

L2021H6

Size:

Shape:

Trans:

Color:

Luster:

Type:

40x34

I

TL

White-Colorless

SV

TCN

Comments:

97E00463

L580

_OL_ITS

0.6

S!

NASAJSCCOSHICDUSTPROGRAH

L2821H

S L'R

K

L

• £.NUtCY(1_) tO,8

248


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