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4;1 Minerals
Properties of minerals
Term | Definition |
---|---|
Mineral | a naturally occurring, inorganic solid that has a crystal structure and a definite chemical composition |
Moh's hardness scale | a scale ranking ten minerals from softest to hardest; used in testing the hardness of minerals |
streak | The color of a mineral's powder. |
Luster | The way a mineral reflects light from it surface. |
Cleavage | A mineral's ability to split easily along flat surfaces |
Fracture | the way a mineral looks when it breaks apart in an irregular way |
fluorescence | the property of a mineral in which the mineral glows under ultraviolet light |