rocks Flashcards
mineral
a solid inorganic substance of natural occurrence.
Rock
the solid mineral material forming part of the surface of the earth and other similar planets, exposed on the surface or underlying the soil or oceans.
Element
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Compound
a thing that is composed of two or more separate elements; a mixture
Crystal
any solid material in which the component atoms are arranged in a definite pattern and whose surface regularity reflects its internal symmetry.
Color
usually 1st characteristic noticed about a mineral, but not always reliable
Luster
a gentle sheen or soft glow, especially that of a partly reflective surface.
Streak
a long, thin line or mark of a different substance or color from its surroundings.
Cleavage
a sharp division; a split.
Fracture
a break
Density
is the substance’s mass per unit of volume. The symbol most often used for density is ρ although the Latin letter D can also be used.
Ore
a naturally occurring solid material from which a metal or valuable mineral can be profitably extracted.
Metallic minerals
minerals which contain one or more metallic elements
Non-metallic minerals
a special group of chemical elements from which no new product can be generated if they are melted.
Gemstones
a precious or semiprecious stone, especially one cut, polished, and used in a piece of jewelry.
