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13 Cards in this Set
- Front
- Back
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Aphanitic |
Crystals are fine-grained and uniform throughout |
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Phaneritic |
Grains are coarse and visible |
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Porphyritic |
Crystals are large and surrounded by a ground mass |
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Glassy |
looks like glass |
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Vesicular |
full of a lot of holes and weblike |
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Framental |
fragments and chunks cemented togethter |
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phenocrysts |
crystals |
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matrix |
holds the crystals in place |
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Felsic/ Acidic |
Light color silicates (Feldspar +Silicates) |
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Intermediate |
Mixture of light and dark minerals (Amphibole and Plagioclase) |
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Mafic/ Basic |
Dark, grey, and black silicates (Magnesium + Iron) |
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Linear volcano |
high melting and cool fast |
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clastic |
rocks formed off of other older rock fragments |
