rocks and minrels Flashcards
Mineral
a naturally inorganic solid that has a definite cyrtialine structure
rock
a naturally occurring solid mixture of one or more minerals or orginc matter
Element
a substance that cannot be sebarted or broken down into simple substance by chemical means
Compound
a substance made up of atoms of two or more different elemts joined by chemical bons
Crystal
a solid whose atoms, ions or molecules are arranged in a definite patteron
. Color
Luster
a gentle sheen or soft glow, especially that of a partly reflective surface.
streak
The streak of a mineral is the color of the powder produced when it is dragged across an un-weathered surface.
Cleavage
a sharp division; a split
Fracture
the separation of an object or material into two or more pieces under the action of stress.
Density
Density, is the substance’s mass per unit of volume.
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
Non-metallic mineral reserves consist of stone quarries and clay and sand pits
Gemstones
A gemstone is a piece of mineral crystal which, in cut and polished form
