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Metamorphic Roc
Metamorphic Rocks and their parent rock
| Question | Answer |
|---|---|
| slate | parent rock: shale, mudstone, or siltstone very fine grain, foliated, excellent rock cleavage with dull surfaces |
| foliated texture | rocks where crystals have recrystallized in a perpendicular direction of the compression force resulting in a layered look. |
| Phylilite | parent rock slate, foliated fine, break along wavey surfaces, glossy sheen |
| Schist | parent rock: phylilite, foliated, , medium to course grain, micas dominate scaly foliation |
| gneiss | parent rocks: schist, granite or volcanic rocks, medium to coarse grain, foliated compositional banding due to segregation of minerals |
| marble | non foliated, parent rock limestone, dolostone, medium to coarse grain, interlocking calcite or dolomite grains |
| quartizite | non-foliated, parent rock quartz sandstone, fused quartz grains massive and very hard |
| anthracite | non-foliated, fine grained parent rock, bituminous coal, shiny black organic rock that may exhibit conchoidal fracture. |