Minerals to Know.

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Presentation transcript:

Minerals to Know

mica Silicate Hardness: 2-3 Luster: pearly

Feldspar Silicate Streak: white Hardness: 6

quartz Color: variety Streak: colorless Hardness: 7 silicate

calcite Fizzes with acid Common mineral found in all rock types Carbonate Hardness 3

Need to be able to recognize by observation

Sulfur Hardness: 1.5-2.5 Streak: white smell

Magnetite Hardness: 5.5-6.5 Streak: black Magnetic

Graphite Luster: metallic Streak: black

Pyrite Hardness: 6 Known as “fool’s gold” Luster: metallic Streak: black with green tint

Galena Streak: gray to black Hardness: 3

Hematite Oxide Hardness: 5-6 Streak: rust red