| A | B |
|---|
| cleavage | splitting of a mineral along smooth, flat surfaces |
| crystal | natural solid substance that has a definite internal pattern |
| density | ratio of the mass of a substance to its volume, expressed as g/cm^3 |
| double refraction | property exhibited by transparent minerals that produce a double image of any object viewed through them |
| flourescence | ability to glow under ultraviolet light |
| hardness | measure of the ability of a mineral to resist scratching |
| inorganic | not made up of living organisms or the remains of living organisms |
| luster | light reflected from the surface of a mineral |
| mineralogist | scientist who specializes in the study of minerals |
| mineralogist | natural, inorganic, crystalline solid that has a characteristic chemical composition |
| Mohs hardness scale | standard against which the hardness of a mineral is tested |
| nonsilicate mineral | mineral that does not contain silicon |
| phosphorescence | ability to glow during and after exposure to ultraviolet light |
| refraction | bending of a light ray as it passes from one substance to another |
| rock-forming mineral | any common mineral that forms the rocks of the earth's crust |
| silicate mineral | mineral that contains atoms of silicon and oxygen |
| silicon-oxygen tetrahedron | four oxygen atoms arranged in a pyramid with one silicon atom in the center |
| streak | color of a mineral in powder form |
