basalt rock white background |
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| navigate by keyword : basalts common aphanitic igneous extrusive volcanic rocks occur types social mineral prefix raw basalt rock isolated white background stone coal black ore geology carbon piece macro fuel crystal nature material natural fossil granite lava mining volcano gold metal specimen grey hand holding cutout scoria pyroclastic highly vesicular dark colored crystals low silica colour iron magnesium |
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| Basalt is an extrusive igneous or volcanic rock that has a low silica content, dark in colour, and is very rich in iron and magnesium. |
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