hand holding raw specimen andesite extrusive igneous rock |
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navigate by keyword : andesite background black carbon charcoal close coal color composed crystal cutout dark extrusive family finegrain finegrained fossil fuel geologist geology grains gray hand holding igneous isolated light lump macro material mine mineral name natural nature object ore organic piece pyrite raw rock rocks sample sandsize sandstone sedimentary specimen stone texture usually white |
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Andesite is the name of a family of fine-grained, extrusive igneous rocks that are usually light to dark gray in color. |
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