minerals Flashcards
mineral
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 mineral’s 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 patter.
hardness
The ability of a mineral to scratch or be scratched by another mineral.
cleavage
The tendency of crystal 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.
moh hardness scale
A hardness scale is used to classify minerals.
furmula
A set of chemical symbols showing the makeup of a chemical compound.
jjjmj
