ROCK AND MINERAL Flashcards
Mineral
a naturally occurring inorganic element or compound having an orderly internal structure and characteristic chemical composition, crystal form, and physical properties.
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
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
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.
