Igneous textures
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8 Terms
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Euhedral
Flat faces with sharp angles, form with slow cooling times, in space, high depth
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subhedral
some crystal faces some grainy, medium rate of cooling, medium depth
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anhedral
grainy surfaces, no flat surfaces, fast cooling less space and shallow
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porphyritic
distinct different crystal sizes, deep as large crystals form
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equicrystalline
uniform size, form anywhere
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vesicular
gas bubbles formed cavities called vesicles, form in volcanoes under the sea
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glassy
crystals are so fine they look like glass. very fast cooling, volcanoes
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fragmental
rock fractured by release of gases
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Flashcards (31)