Post on 22-Feb-2016
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Hardness
• a measure of how easily a mineral can be scratched.
• Any mineral with a greater hardness than another mineral will scratch that softer mineral
cleavage
• the ability of a mineral to split relatively easily and evenly along one or more flat planes.
Fracture
• is the ability of minerals to break with arc like, rough, or jagged edges.
Ore
• mineral that contains a useful substance that can be mined at a profit.
Gem
• valuable minerals that are prized for their rarity and beauty.