geologist hand holding specimen plutonic granite rock |
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| navigate by keyword : alkali background been black blue changed close coal coarsegrained composed crystal earlier enough eye feldspar foliated form gem gemstone geologists geology gold grains granite hand holding igneous intrusive large lightcolored macro metamorphic mineral mostly natural nature non object ore original phaneritic piece plagioclase plutonic pyrite quartz quartzite rock rocks rough sedimentary shell specimen started stone substantially texture type unaided visible white |
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| Granite is a light-colored igneous rock with grains large enough to be visible with the unaided eye. |
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