Minerals Flashcards
Minerals
A substance that is formed naturally in the earth, is organic, has definite chemical composition and has a crystal structure.
streak
The color of the 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 get 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 on a mineral that has a rough or irregular.
Mohs Hardness Scale
A hardness scale used to classify minerals.
Formula
A set of chemical symbols making up of a chemical compound.
