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10 Cards in this Set
- Front
- Back
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felsic |
mostly quartz and k spar pink, white, or pale |
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intermediate |
mostly plagioclase or k spar greenish grey |
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mafic |
mostly plagioclase and pyroxene dark grey to black |
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ultramafic |
mostly olivine and pyroxene dark grey to black |
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fine grained |
aphanitic or porphyritic |
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course crained |
phaneritic or pegmatic |
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aphanitic |
crystals less than 1 mm extrusive |
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porphyritic |
crystals are large and small both intrusive and extrusive large crystals are phenocrysts, small crystals are |
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phaneritic |
crystals between 1-10 mm intrusive |
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pegmatic |
crystals greater than 1 mm intrusive |
