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| fine grained, small crystals, cools quickly |
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| coarse grained, larger crystals, cools slowly |
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| extrememly large crystals, cools extremely slowly, usually a type of granite |
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| have reflective veins of micas present |
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| alternating bands of felsic and mafic minerals |
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| metamorphosed shale of very fine grain |
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| equal sized grains growing into each other of similar composition |
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| metamorphosed limestone, containe calcium carbonate, which will react with HCl |
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| detrital, coarse grained or fine grained |
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| crystalline, layered texture |
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| smooth, rounded gravel stuck together with fine grained cement |
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| rough edge gravel cemented together with fine grain rock, indicative of a catastrophic erosional event (landslide) |
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| composed of sand of various sixes |
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| clay-sized particles, very fine, usually uniform in color and composition |
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| rocks form from minerals precipitating out of water due to changes in pressure or temperature |
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| minerals and rocks precipitating out of solution due to water evaporating |
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| remains from living organisms, fossils, usually shells of aquatic organisms, forms limestone that will react with HCl |
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| dark, dense--metals Fe, Mg |
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| light, less sense--feldspar, silica, quartz |
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| grayish color, medium density |
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