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7 Cards in this Set
- Front
- Back
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Rocks |
- Assortment of minerals - identification by physical properties |
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Physical properties of minerals |
- hardness, density, streak, cleavage, flexibility, crystal shape, color, litter, transparency effervescence, magnetium |
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Hardness + density |
Hardness: resistance to being scratched + breaking (uses the Mohd scale)
Density: ratio between mass and volume |
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Cleavage + crystal form |
Cleavage: broke into smooth fragments when subjected to stress Crystal form: has 6 specific crystal systems = cubic, pyramid, hexagonal, orthophonie monoclinie, triclinie |
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Color + streak + magnetism |
Color: pressure and intensity of certain elements determine a specific mineral color Streak: color left by a mineral when rubbed on an unglazed porcelain plate Magnetism: mineral attracted to magnets |
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Transparency + effervescence |
Effervescence: bubbling reaction caused by carbohydrates in a mineral react with hydrochloride Transparency: opaque = no light through, translucent = partial light through, |
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Luster |
How light interacts with surface of a crystal (descriptive) Resinous: dried glue, chewing gum Vitreous: look of glass Dull: non-reflective surface |
