Mineral Lab By Wayde
Biotite mica •
Lustre: non-metallic
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Cleavage: cleavage
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Color: black or dark brown
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Streak color: colorless
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Hardness: softness of a nail Moh’s Scale: 2.5–3.0
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Chemical Formula: KMg2.5Fe2+ AlSi3O10(OH)1.75F0.25
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Uses: To assess temperature histories of metamorphic rocks.
0.5
Sources: Glencoe.com Virtual Lab
http:// www.asu.edu/courses/glg103/PDF%20labs/Lab%202%20Mineral%20Lab%20ID%20revised%2017JULY2010.pdf
Calcite •
Lustre: non-metallic
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Cleavage: cleavage 2 planes
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Color: white or some times transparent
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Streak color: white
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Hardness: softer than glass but harder of a nail Moh’s Scale: 3.0
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Chemical Formula: CaCO3
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Uses: Used for gun scopes, cement repairs, and soil remediation .
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Special properties: found in sedimentary rock made of shells of dead organisms.
Feldspar •
Lustre: non-metallic
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Cleavage: cleavage
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Color: varied
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Streak color: colorless
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Hardness: harder than glass
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Moh’s Scale: 6.0-6.5
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Chemical Formula: KAISi3O8 – NaAIS3O8 – CaAl2Si2O8 (repeating unit)
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Uses: glassmaking, ceramics, and to some extent as a filler and extender in paint, plastics, and rubber.
Fluorite •
Lustre: non-metallic
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Cleavage: cleavage
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Color: usually variation of purple
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Streak color: colorless
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Hardness: softer than glass but harder than a fingernail
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Moh’s Scale: 4
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Chemical Formula: CaF2
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Uses: Toothpaste and an additive to drinking water.
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Galena •
Lustre: metallic
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Cleavage: cleavage
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Color: gray
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Streak color: gray to black
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Hardness: softness of a fingernail
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Moh’s Scale: 2.5-2.75
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Chemical Formula: PbS
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Uses: used to used by ejyptions as Kohl which was smeared under eyes to hide glare from sun, and now days is used to make lead-acid batteries.
Graphite •
Lustre: metallic
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Cleavage: cleavage
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Color: black to gray
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Streak color: black to gray
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Hardness: softer than a fingernail
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Moh’s Scale: 1-2
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Chemical Formula: C
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Uses: pencils, steelmaking, expanded graphite, brake lining, and foundry facings and lubricants.
Gypsum •
Lustre: non-metallic
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Cleavage: cleavage
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Color: colorless
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Streak color: white
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Hardness: softer than a fingernail
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Moh’s Scale: 2 - 2.5 Chemical Formula:
Halite •
Lustre: non-metallic
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Cleavage: cleavage
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Color: colorless
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Streak color: colorless
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Hardness: softness of a fingernail
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Moh’s Scale: 2-2.5
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Chemical Formula: NaCl
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Uses:
Hematite • Lustre: metallic • Cleavage: fracture • Color: dark or silver red • Streak color: red gray • Hardness: harder than glass Moh’s Scale: 5.5-6.5 • Chemical Formula: Fe2O3 • Uses: jewellry and pigment for paint Sources: http://en.wikipedia.org/wiki/Hematite • •
Glencoe.com Virtual Lab
Magnetite • Lustre: metallic • Cleavage: fracture • Color: black • Color streak: black • Hardness: harder than glass •
Moh’s Scale: 5.5-6.5
• Chemical Formula: Fe2+Fe3+2O4 • Uses: jewelry, magnets • •
Sources: Glencoe.com Virtual Lab http://en.wikipedia.org/wiki/Magnetite
Muscovite Mica • Lustre: non-metallic • Cleavage: cleavage • Color: white • Streak color: white • Hardness: softness of a fingernail •
Moh’s Scale: 2-2.5
• Chemical Formula:KAl2(AlSi3O10)(F,OH)2 • Uses: •
Sources: •
Glencoe.com Virtual Lab http://en.wikipedia.org/wiki/Muscovite
Pyrite • Lustre: metallic • Cleavage: fracture • Color: brassy gold • Streak color: greenish black • Hardness: harder than glass •
Moh’s Scale: 6-6.5
• Chemical Formula: FeS2 • Uses: •
Sources: •
Glencoe.com Virtual Lab http://en.wikipedia.org/wiki/Pyrite
Quartz • Lustre: non-metallic • Cleavage: fracture • Color: colorless • Streak color: colorless • Hardness: harder than glass •
Moh’s Scale: 7
• Chemical Formula: SiO2 • Uses: Stones in jewelry, crystals •
Sources:
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Glencoe.com Virtual Lab http://en.wikipedia.org/wiki/Quartz
Sulfur • Lustre: non-metallic • Cleavage: fracture • Color: yellow • Streak color: yellow to white • Hardness: softer than a fingernail •
Moh’s Scale: 2
• Chemical Formula: S • Uses: matches, insecticides and fungicides •
Sources:
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Glencoe.com Virtual Lab http://en.wikipedia.org/wiki/Sulfur
Talc • Lustre: non-metallic • Cleavage: cleavage 2 planes • Color: white or greenish • Streak color: white • Hardness: softer than a fingernail •
Moh’s Scale: 1
• Chemical Formula: Mg3Si4O10(OH)2 • Uses: paper making, plastic, paint and coatings, rubber, food, electric cable, pharmaceuticals, cosmetics, ceramics, etc •
Sources:
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Glencoe.com Virtual Lab http://en.wikipedia.org/wiki/Talc