rock and mineral Flashcards
mineral
a solid inorganic substance of natural occurrence.
rock
a large piece of rock that has become detached from a cliff or mountain; a boulder.
element
a part or aspect of something abstract, especially one that is essential or characteristic.
compound
a thing that is composed of two or more separate elements; a mixture.
crystal
highly transparent glass with a high refractive index.
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.
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
specific gravity and metallic luster, such as titanium, rutile , tungsten, uranium, tin, lead, iron, etc
non-metallic minerals
reserves consist of stone quarries and clay and sand pits
gemstones
a precious or semiprecious stone, especially one cut, polished, and used in a piece of jewelry.
