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Geology

Minerals and rocks

TermDefinition
Minerals A naturally occurring substance that is solid, inorganic, chemical composition an atomic structure
Rocks A natural occurring solid aggregated of minerals or mineraloids
Hardness Toughness on Mohs scale
Cleavage How the mineral breaks
Luster Shininess or dullness of a mineral
Streak The color a mineral leaves behind when scratched
Crystal form The shape of crystals
Silicate minerals Largest and most important rock forming group. Containing silicon and oxygen
Nonsilicate minerals Minerals not containing silicon
Rock cycle The life of rocks and their formation
Intrusive (igneous) Minerals made inside the earth cooling slowly
Extrusive (igneous) Minerals made outside the earth cooling fast
Foliated (metamorphic) Layers in rocks and minerals
Non foliated (metamorphic) No layers in rocks and minerals
Chemical (sedimentary) Mineral constituents in solution become supersaturated and inorganically precipitated
Organic (sedimentary) Minerals being made of a once living thing
Clastic (sedimentary) Composted of fragments
Created by: sprestidge34
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