rocks and minerals Flashcards
Mineral
a solid inorganic substance of natural occurrence.
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 crystal or crystalline solid is a solid material whose constituents are arranged in a highly ordered microscopic structure.
Color
Color or Colour is the characteristic of human visual perception described through color categories.
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
Cleavage refers to the way some minerals break along certain lines of weakness in their structure.
Fracture
A fracture is any separation in a geologic formation, such as a joint or a fault that divides the rock into two or more pieces.
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
the shiny part or the rock,reflective
Non-metallic minerals
if a rock dose not have sparkly parts in it
Gemstones
a precious or semiprecious stone, especially one cut, polished, and used in a piece of jewelry.
