Mineral vocabulary. Flashcards
1
Q
Mineral
A
A substance that is formed naturally in the Earth, is inorganic , has definite chemical composition and has a crystal structure.
2
Q
Streak
A
The color of a mineral ´ s
powder when it is rubbed
against a porcelain plate.
3
Q
Luster
A
The way the surface of a mineral reflects light.
4
Q
Inorganic
A
Not derived from living matter.
5
Q
Crystal
A
A solid formation that follows a pattern.
6
Q
Hardness
A
The ability of a mineral to scratch or be scratched by another mineral.
7
Q
Cleavage
A
The tendency of crystals and minerals to break along definite planes resulting in smooth surfaces.
8
Q
Fracture
A
The appearance of a freshly broken surface on a mineral that has a rough or irregular surface.
9
Q
Mohs Hardness scale
A
A hardness scale used to
classify minerals.
10
Q
Formula
A
A set of chemicals symbols showing the makeup of a chemical compound.
