Mineral vocabulary Flashcards
Mineral
A substance that is formed naturally in the earth, is inorganic, has a definite chemical composition and has crystal structure.
Streak
The color of mineral´s powder when it rubbed against a porcelain plate.
Luster
The way the surface of a mineral reflect light.
Inorganic
Not derived from living water.
Crystal
A solid formation that follows a pattern.
Hardness
The ability of a mineral to scratch or be scratched by other mineral.
Cleavage
The tendency of crystals and minerals to break along definite planes resulting in smooth surfaces.
Fracture
The appearance of a freshly broken surface on a mineral that has a rough or irregular surface.
Mohs Hardness Scale
A hardness scale use to classify minerals
Formula
A set of chemical symbols showing the makeup of a chemical compound
