raw basalt rock isolated white background |
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navigate by keyword : raw specimen gneiss rock stone isolated white background formed high grade regional collection mineral grains grow cemented rocks large pebbles coal black ore geology carbon piece macro fuel crystal nature volcanic material natural fossil granite lava mining volcano basalt aphanitic fine grained extrusive igneous big pattern textured surface brown marble backgrounds rough closeup old gray grunge detail backdrop foliated sample abstract granitoids |
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A rock is a solid collection of mineral grains that grow or become cemented together. Some rocks are large while others are small. Small rocks are called pebbles. |
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