Mineral Samples

#1 Fluorite• Luster: Nonmetallic• Color: Green and Purple• Steak: Clear/White• Cleavage• Hardness: 4• Nonsilicate: CaF2

#2 Quartz• Luster: Nonmetallic• Color: Any• Steak: Clear• Fracture• Hardness: 7• Silicate SiO2

• Comes in almost any color

#3 Pyrite• Luster: Metallic• Color: Gold• Streak: Black• Cleavage• Hardness: 6-6.5• FeS2 Nonsilicate

• Fools Gold

# 4 Halite• Luster: Nonmetallic• Streak: White/clear• Cleavage• Hardness: 2.5• Nonsilicate NaCl• Salt

# 5 Sphalerite• Luster: Metallic• Color: Brownish yellow• Streak: Pale yellow• Cleavage• Hardness: 3.5-4• Nonsilicate ZnS

# 6 Calcite• Luster: Nonmetallic• Color: White to yellowish white• Cleavage• Hardness: 3• Nonsilicate CaCO3

• Bubbles with HCL

# 7 Talc• Luster: Nonmetallic• Color: Pearly white• Streak: White• Fracture and Cleavage• Hardness: 1• Silicate Mg3Si4O10(OH)2

• Soapy Feel

# 8 Hematite• Luster: Nonmetallic• Color: Black/Rust• Streak: Rust Brown• Fracture• Hardness: 5.5-6.5• Nonsilicate Fe2O3

# 9 Hornblende • Luster: Nonmetallic• Color: Black• Streak: Black• Cleavage• Hardness 5-6• Silicate• Striations

#10 Olivine• Luster: Nonmetallic• Color: Green• Streak: Clear• Fracture• Hardness: 6.5-7• Silicate (Fe, Mg)2 SiO4

• Dull luster-green

#11 Dolomite• Luster: Nonmetallic• Color: Pale Pink• Streak: White• Cleavage• Hardness: 3.5-4• Nonsiliacte CaMg(CO3)2

• Rice-Like Cleavage

# 12 Gypsum• Luster: Nonmetallic• Color: Clear to White• Streak: White• Cleavage• Hardness: 2• Nonsilicate CaSO42H2O

• Can scratch with fingernail

# 13 Garnet• Luster: Nonmetallic• Color: Wine Red• Streak: Clear• Fracture• Hardness: 6.5-7.5• Silicate• Gemstone

#14 Graphite• Luster: Metallic• Color: Dark Gray• Streak: Gray• Fracture• Hardness: 1-2• Nonsilicate C• Pencil Lead

#15 Microcline Orthoclase

• Luster: Nonmetallic• Color: Pink • Streak: White• Cleavage• Hardness: 6• Silicate KALSi3O2

#16 Magnetite• Luster: Metallic• Color: Black• Streak: Black• Fracture• Hardness: 6• Nonsilicate FeO4

• Magnetic

#17 Corundum• Luster: Nonmetallic • Color: Gray, Black, and Pink• Streak: Clear• Fracture• Hardness: 9• Nonsilicate Al3O3

• Rubies and Sapphires