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