cleavage - breaking along smooth, flat surfaces, streak - color left by a mineral in its powdered form, color - least accurate way to identify a mineral, hardness - measure of how easily a mineral can be scratched, fracture - breaking along rough, jagged surfaces, graphite - soft mineral often used in pencils, halite - mineral used in food seasoning, talc - mineral used to make baby powder, magnetite - mineral that is attracted to a magnet, luster - the way in which a mineral reflects light, gems - the most prized of the minerals; includes diamonds, rubies, and emeralds,

Minerals Rock Vocabulary

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