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12 Cards in this Set
- Front
- Back
how are metamorphic rocks classified?
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foliated and non foliated
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Characteristics of metamorphic rock
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-some can have bands of color (foliated)
-some may show signs of bending or distortion -aluminum foil look "foliation" - marble will fizz in acid |
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foliated
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when minerals align in a certain direction. This causes a banded appearance. For example, Gneiss and Slate are foliated rocks.
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non-foliated
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no bands or banded texture.For example, Marble and quartzite are non-foliated rocks.
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Slate
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very fine grained. Smooth and dull surface with a dark blue/ black color. More compressed and dense version of shale. Foliated
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Quartzite
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hard with large quartz grains, medium to coarse. Non foliated
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Gneiss
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foliated. Has black and white bands of mineral medium to coarse grains
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Marble
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no foliated.interlocking calcite and dolomite grains, medium to coarse grained. Fizz in acid.
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Anthracite
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dark in color. Fine grained, shiny black organic with fractures. non foliated
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Phyllite
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foliated. Fine grained. breaks along wavy surfaces, glossy sheen.
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Schist
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Foliated. medium to coarse with black and some white areas not in an organized pattern.
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formation
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see the "rock cycle" set
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