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8th Grade Science

Minerals

TermDefinition
mineral a naturally occurring, inorganic solid that has a crystal structure and a definite chemical composition
inorganic non-living material
MOH's Hardness Scale ranks 10 minerals from softest to hardest
talc softest known mineral
diamond hardest known mineral
geode rounded, hollow rock that is often lined with mineral crystals
streak the color of a mineral's powder
luster how light is reflected from a mineral's surface
crystallization process by which atoms are arranged to form a material with a crystal structure
cleavage mineral that splits easily along flat surfaces
fracture how a mineral looks when it breaks apart in an irregular way
Created by: SSC