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Page 1: Alumina Content of Paleocene Claystones clay maps/mott...e ol g ic aSur vy G I nst .158 Prichard, G.H., 1980, Authigenic kaolinite in the Bear Den Member (Paleocene) of the Golden

North Dakota Geological Survey100K Series: Mott - a l

Ca rtographic Compilation: E. L. Kadrmas

Edward C. Murphy, State GeologistLynn D. Helms, Director Dept. of Mineral Resources

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Cedar Creek

Buffa lo Creek

Duck Creek

Ind ian Creek

Chan ta Peta Creek

Dayto

n Cree

k

Slick Creek

Russi

an Slo

ugh

Chilton Creek

Coon

Creek

South Cedar Creek

Thirtymile Creek

Mehrer Creek

Cedar Creek

Wil low Cr

eek

Cannonball River

Plum Creek

Antelope Creek

Sheep Creek

Flat Creek

Spring Creek

Goose Creek

Goose Creek

Spring Creek

Sheep Creek

Spring Creek

Coal Bank Creek

Wolf B

utte C

reek

Hay S lough Creek

North Cedar Creek

Chan ta Peta Creek

Squaw Creek

Cedar CreekDuck

Creek

TImber Creek

Van PattonSlough

Dry Lake

CedarLake

Cannonball River

MirrorLake

JungLake

LarsonLake

North LemmonLake

TownshipLake

EhlerLake

White Butte Reservoir

RustanLake

CharlesLake

24%

22% 16%

18%

18%

21%

20% 16%

25%

19.8%

9' 7'

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8'

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Creek

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(/12

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HETTINGER COUNTYADAMS COUNTY

ADAMS COUNTY

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Haynes

Reeder

Bucyrus

Hettinger

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Note: This map was expanded beyond the normal Mott 100K Sheet to include an additional height o f fou r miles south to theSouth Dakota border.

102o 00 '

46o 30 'R. 97 W. R. 95 W. R. 94 W. R. 93 W. R. 92 W. R. 90 W.R. 91 W.R. 96 W.R. 98 W.103o 00 '

46o 30 '

T. 13

5 N.

T. 13

3 N.

T. 13

1 N.

T. 13

0 N.

T. 13

2 N.

T. 13

4 N.

T. 12

9 N.

103o 00 '

46o 00 '

102o 00 'R. 98 W. R. 96 W.R. 97 W. R. 95 W. R. 94 W. R. 93 W. R. 92 W. R. 91 W.

Alumina Content of Paleocene ClaystonesMott 100K Sheet, North Dakota

Adjoining 100K Maps

T. 13

5 N.

T. 13

3 N.

T. 13

1 N.

T. 13

0 N.

T. 13

2 N.

T. 13

4 N.

T. 12

9 N.

46o 00 '

1980 Magnetic NorthDeclination at Center o f Sheet

12o

Mott 100K Sheet, North Dakota

Edward C. Murphy2013

Other FeaturesWater County Boundary

Section CornersE

Unpaved RoadRiver/Stream - Intermittent

Paved RoadRiver/Stream - Perennial

State Highway!(22Water - Intermittent

Merca tor Projec tion 1927 North Amer ican DatumStandard para llel 46o 00' Centra l meridian 102o 30'

0 1 2 3 4

Miles

Scale 1:100,000

Only a handful of studies have published the alumina (Al2O3) contents of clay-stones in western North Dakota: Clarke (1948), Hansen (1959), Chew and Boyd(1960), Prichard (1980), and Murphy (2012). Clarke (1948) collected 417 samplesprimarily from the Chalky Buttes in Slope County and the Little Badlands in StarkCounty. All but eight of his samples were from bentonites (primarily the SouthHeart Member of the Chadron Formation). Clarke's sample localities were notplotted on any of the map sheets because the current project is focused on thealumina content of kaolin deposits. Chew and Boyd (1960) reported alumina values for 52 sample sites in westernNorth Dakota. They plotted the sample locations on county maps published by theND Highway Department at one inch to the mile. Chew and Boyd analyzed onlyone sample from this map sheet. The North Dakota Geological Survey collected 232 samples from 62 localities inwestern North Dakota in 2011 and 2012. The initial results were published inNDGS Geologic Investigations no. 158 and the full report will be published inNDGS Report of Investigations no. 112. Multiple samples were collected from allbut the most limited outcrops. The NDGS alumina values plotted on this maprepresent an average of four analyses (range from 2 to 8) per site. Only sample55 represents a single analysis. The alumina value is a weighted percent (the sumof individual analyses were multiplied by individual bed thickness and thendivided by the thickness of the entire kaolin layer).

WHITE RIVER and ARIKAREE Strata (Eocene through Miocene)

Geology Undifferentiated

GOLDEN VALLEY FORMATION (Paleocene and Eocene)The Bear Den Member is generally at the surface along the outer edges (contactbetween the Golden Valley and Sentinel Butte Formations) of the deposit.

The White River and Arikaree rocks were plotted on this map because they maycontain various concentrations of erionite. Erionite is a fibrous zeolite that hasbeen identified by the World Health Organization as a Group 1 carcinogen. Anyproposed mining of the Bear Den in the vicinity of White River or Arikaree rockswill require the overburden be tested for erionite and could, depending uponresults, curtail mining in the area.

RHAME BED (Paleocene)The top of the Rhame Bed marks the contact between the Slope Formation and theoverlying Bullion Creek Formation. This contact was mapped by Carlson (1979) ata scale of 1:125,000.

REFERENCESCarlson, C.G., 1978, Geology of Bowman and Adams Counties , North Dakota: North Dakota Geological Su rvey No. 65, Part 1 , 29 p. Chew, R.T. III, and Boyd, G.A., 1960 , A prel iminary invest igation of clay deposits in Minnesota, North Dakota, Montana, No rthern Idaho, and Washington; Northern Pacific Railroad Company, Properties and Indus trial Developmen t Department, 161 p . Clarke, F.F., 1948, Southwestern North Dakota clay deposi ts Stark, Slope, and Billings coun ties, N.Dak .: U.S. Bureau of Mines Report of Investigat ions 3219, 32 p. Hansen, Miller, 1959, Clays of North Dakota as a po tential sou rce o f alumina; North Dakota Geological Survey Report of Inves tigat ion no. 33 , 15 p. Murphy, E.C., 2012, Alumina conten t of the Bear Den Member and the Rhame Bed in North Dakota; North Dakota Geo logical Su rvey Geological Investigations no. 158. Prichard, G.H., 1980 , Authigenic kaolinite in the Bear Den Member (Paleocene) o f the Golden Valley Formation in southwestern North Dakota, unpub lished Master's Thesis , University of North Dako ta, 174 p.

104o 00 '

EXPLANATION

!( 16%

6'

44 !(Sample or Site I.D.

Alumina Percent

Bed Thickness(underlined if itis the entire bed)

Murphy (2012)

Chew and Boyd (1960)

!(

!( Sample not analyzed

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