Warm UpWarm Up

What is the major What is the major difference between an difference between an element and a element and a compound?compound?

How can we How can we identify unknown identify unknown minerals?minerals?Mineral Identification Mineral Identification LabLab

Is Your Sample . . .?Is Your Sample . . .?

StreakStreak

Your Sample IsYour Sample Is

Hematite – 3Hematite – 3 Hematite is a compound – Hematite is a compound –

FeFe22OO33 (iron and oxygen) (iron and oxygen) Start OverStart Over

Your Sample IsYour Sample Is

Pyrite – 4Pyrite – 4 Pyrite is a compound – FeSPyrite is a compound – FeS22

(iron and sulfur)(iron and sulfur) Start OverStart Over

HardnessHardness

Your Sample IsYour Sample Is

Magnetite – 14 Magnetite – 14 Magnetite is a compound – Magnetite is a compound –

FeFe+2+2FeFe22+3+3OO44 (iron and (iron and

oxygen)oxygen) Start OverStart Over

LusterLuster

Your Sample IsYour Sample Is

Galena (7)Galena (7) Galena is a compound – PbS Galena is a compound – PbS

(lead and sulfur)(lead and sulfur) Start OverStart Over

Your Sample IsYour Sample Is

Graphite – 9Graphite – 9 Graphite is an element – C Graphite is an element – C

(carbon)(carbon) Start OverStart Over

ColorColor

YellowYellow OtherOther

Your Sample IsYour Sample Is

Sulfur – 8Sulfur – 8 Sulfur is an element - SSulfur is an element - S Start OverStart Over

HardnessHardness

FingernailFingernail PennyPenny 6+6+

Your Sample IsYour Sample Is

Calcite – 5Calcite – 5 Calcite is a compound – Calcite is a compound –

CaCOCaCO33 (calcium, carbon, and (calcium, carbon, and oxygen)oxygen)

Start OverStart Over

LusterLuster

GlassyGlassy PearlyPearly

ColorColor

Colorless/WhiteColorless/White BrownishBrownish

Your Sample IsYour Sample Is

Halite – 15Halite – 15 Halite is a compound – NaCl Halite is a compound – NaCl

(Sodium and Chloride – salt)(Sodium and Chloride – salt) Start OverStart Over

Your Sample IsYour Sample Is

Muscavite Mica – 2Muscavite Mica – 2 Muscavite Mica is a Muscavite Mica is a

compound – KAlcompound – KAl22(Si(Si33AlOAlO1010))(OH,F)(OH,F)2 2 (Potassium, (Potassium, Aluminum, Silicon, Oxygen, Aluminum, Silicon, Oxygen, Hydrogen, and Fluorine)Hydrogen, and Fluorine)

Start OverStart Over

ColorColor

Pale Green/Gray/WhitePale Green/Gray/White Colorless/WhiteColorless/White

Your Sample IsYour Sample Is

Talc – 13Talc – 13 Talc is a compound – Talc is a compound –

MgMg99SiSi44OO1010(OH)(OH)44 (magnesium, (magnesium, silicon, oxygen, hydrogen)silicon, oxygen, hydrogen)

Start OverStart Over

Your Sample IsYour Sample Is

Gypsum – 12Gypsum – 12 Gypsum is a compound – Gypsum is a compound –

CaSOCaSO44*2H*2H22O (Calcium, O (Calcium, Sulfur, Oxygen, Hydride)Sulfur, Oxygen, Hydride)

Start OverStart Over

LusterLuster

GlassyGlassy PearlyPearly

Your Sample IsYour Sample Is

Microcline FeldsparMicrocline Feldspar Microcline Feldspar is a Microcline Feldspar is a

compound – KAlSicompound – KAlSi33OO88 (Potassium, Aluminum, (Potassium, Aluminum, Silicon, and Oxygen)Silicon, and Oxygen)

Start OverStart Over

Your Sample IsYour Sample Is

QuartzQuartz Color – Clear/colorless – Rock Color – Clear/colorless – Rock Quartz – 10Quartz – 10

Color – Pink – Rose Quartz – Color – Pink – Rose Quartz – 66

Quartz is a compound – SiOQuartz is a compound – SiO22 (Silicon and Oxygen)(Silicon and Oxygen)

Start OverStart Over

ConclusionConclusion

How many samples were How many samples were elements? Compounds?elements? Compounds?

What was the easiest mineral What was the easiest mineral property to identify?property to identify?

What was the hardest mineral What was the hardest mineral property to identify?property to identify?

What minerals had special What minerals had special properties? What were they?properties? What were they?

What did you learn from this lab?What did you learn from this lab?