Minerals. Flashcards
Minerals.
A substance that is formed naturally in the Earth, is inorganic, has a definite chemical composition and has a crystal structure.
Streak.
The color of a minerals powder when it is rubbed against a porcelain plate.
Luster.
The way the surface of a mineral reflects light.
Inorganic.
Not derived from living matter.
Crystal.
A solid formation that follows a pattern.
Hardness.
The ability of a mineral to scratch or be scratched by another 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 used to classify minerals.
Formula.
A set of chemical symbols showing the makeup of a chemical compound.
