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: Streak:white smell Magnetite Hardness: Streak:black Magnetic Graphite Luster:metallic Streak:black Pyrite Hardness: 6 Known as fools gold Luster: metallic
Streak:black with green tint Galena Streak:gray to black Hardness:3 Hematite Oxide Hardness:5-6 Streak:rust red