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Mineralogy
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Term | Definition |
---|---|
What is a mineral? | Solid, inorganic and naturally occurring substance with a definite chemical composition and a definite crystal structure. |
Is calcite a mineral? | Yes |
Is apatite a mineral? | Yep |
Is diorite a mineral? | NO |
Is basalt a mineral? | Nope |
Mineral Cleavage | the tendency of a mineral to split along a flat, smooth surface |
How mineral cleavage is determined | by it's crystal structure |
Mineral Fracture | the manner in which a mineral breaks along an irregular surface. |
Five common types of fracture | Conchoidal, Fibrous, Splintery, Hackly, Irregular |
Define Luster | the way in which a mineral reflects light |
two main categories of luster | Metallic and Non-Metallic |
Nonmetallic Mineral 1 | Gypsum |
Nonmetallic Mineral 2 | Mica |
Nonmetallic Mineral 3 | Quartz |
Mineral Streak | the color of a mineral in POWDER FORMMMM. |
Vitreous Luster | the look of glass |
Greasy Luster | the look of an oil-coated substance |
Adamantine | hard sparkly look of a diamond |
Other types of nonmetallic luster (self-explanatory definitions) | Resinous, Silky, Pearly |
Define crystal structure | atoms are arranged in an orderly, repeating 3D pattern |
Do all minerals have cleavage? | noooope |
What is mineral hardness? | the ability of a mineral to resist scratching |