Properties of Common Minerals

What is the range of hardness found on the chart? How does this compares with Moh's hardness scale?

1 - 7.5

What is the chemical composition of talc?

Mg3 Si4 O10 (OH)2

. Does the ESRT chart give characteristics for every mineral found on earth?

No

What is the dominant type of breakage for muscovite mica?

cleavage

What type of breakage is more common: cleavage or fracture?

clevage

What is selenite gypsum used for?

drywall

What is the dominant form of breakage for sulfur?

fracture

Which mineral has a gray streak, a highly metallic luster and shows cleavage?

galena

Which mineral might be found in your car battery?

galena

Which mineral can scratch glass, has a non-metallic luster, has fracture and is a dark red color?

garnet

Which mineral can be easily scratched by a finger nail, has cleavage, a metallic luster and has a black streak?

graphite

Which mineral is found in your pencil?

graphite

Which mineral helps keeps schools open during snowy and icy weather by melting ice?

halite

Which mineral tastes salty?

halite

What are the two different types of luster?

metalic, non metalic

For the mineral galena, identity the following: Luster: ______ Hardness: ______ Breakage: ______ Color: ______ Composition: ______

metallic - 2.5 - cleavage - metallic silver - Pbs

For the mineral fluorite, identity the following: Luster: ______ Hardness: ______ Breakage: ______ Color: ______ Composition: ______

non metallic - 4 - cleavage - colorless - CaF2

For the mineral olivine, identity the following: Luster: ______ Hardness: ______ Breakage: ______ Color: ______ Composition: ______

non metallic - 6.5 - fracture - green - Fe (Mg)2 S1 O4

For the mineral quartz, identity the following: Luster: ______ Hardness: ______ Breakage: ______ Color: ______ Composition: ______

non metallic - 7 - fracture - colorless - SiO2