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
a piece of a homogeneous solid substance having a natural geometrically regular form with symmetrically arranged plane faces.
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
Metallic minerals are minerals which contain one or more metallic elements.
Non-metallic minerals
reserves consist of stone quarries and clay and sand pits; chemical.
Gemstones
a precious or semiprecious stone, especially one cut, polished, and used in a piece of jewelry.
