Rocks and Minerals Flashcards
Mineral
a solid inorganic substance of natural occurrence.
Rock
Rock or stone is a natural substance, a solid aggregate of one or more minerals or mineraloids.
Element
A substance that cannot be decomposed into simpler substances
Compound
a thing that is composed of two or more separate elements; a mixture.
Crystal
A crystal or crystalline solid is a solid material whose constituents are arranged in a highly ordered microscopic structure,
Color
the property possessed by an object of producing different sensations on the eye as a result of the way the object reflects or emits light.
Luster
a gentle sheen or soft glow, especially that of a partly reflective surface.
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Streak
a long, thin line or mark of a different substance or color from its surroundings.
Cleavage
a sharp division; a split.
Fracture
the cracking or breaking of a hard object or material.
Density
the degree of compactness of a substance.
Ore
a naturally occurring solid material from which a metal or valuable mineral can be profitably extracted.
Metallic minerals
with a high specific gravity
Non-metallic minerals
: Non-metallic mineral reserves consist of stone quarries
Gemstones
a precious or semiprecious stone, especially one cut, polished, and used in a piece of jewelry.
