rocks and minerals Flashcards
Mineral
solid inorganic substance of natural occurrence.
Rock
he solid mineral material forming part of the surface of the earth
Element
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
he 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
the splitting of a Mineral along a smooth flat surface
Fracture
he 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
Non-metallic mineral reserves consist of stone quarries and clay and sand pits; chemical and fertiliser mineral deposits
Gemstones
a precious or semiprecious stone, especially one cut, polished, and used in a piece of jewelry.
