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9 Cards in this Set
- Front
- Back
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Phaneritic Texture
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the minerals are visible
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Aphanitic Texture
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the minerals are microscopic in size -- cannot be seen with the naked eye
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Porphyritic Texture
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have larger grains in a matrix of smaller grains
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Vesicular Texture
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full of bubbles
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Glassy Texture
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glassy appearance - no visible grains present
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Tuff
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consolidated volcanic ash
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Pyroclastic
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rocks formed from explosive volcanic events
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Texture
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see crystals?
yes = phaneritic no = aphanitic two sizes crysals = porphyritic |
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If black is in a rock it contains:
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Biotite
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