gneiss rock isolated white background |
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navigate by keyword : aggregate argillaceous background bas basalt black calc calcium carbon carbonate clay coal common commonly conglomerate dolomite environment environmental fine finegrained fluorite foliated formed forming forms fossil fuel gabbo gem gemmology gemology geological geology gneiss grained granite isolated jasper limestone macro magnesium mediumgrade metamorphic metamorphism mineral mudstone natural nature ore phyllite piece practices quartz raw reconstitution red rhyolite rock rocks rough sandstone schist science sedimentary shale shooting silicate single slate solid specimen spinach stone structure tectonics texture tuff used volcano white |
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Gneiss is a metamorphic rock form characterized by banding caused by segregation of different types of rock, typically light and dark silicates. |
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