hand geologist holding andesite volcanic rock stone

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Raw specimen of granite igneous rock stone on Geologist's hand. Royalty Free Stock Photo
Sample raw specimen of granite igneous rock stone on Geologist's hand. Royalty Free Stock Photo
Raw specimen of rhyolite extrusive igneous rock stone on Geologist's hand. Royalty Free Stock Photo
?Hand of geologist holding a andesite volcanic rock stone. Royalty Free Stock Photo
   
   
   
?Hand of geologist holding a andesite volcanic rock stone.
   
   
   
   
   
   
   
To geologists, a rock is a natural substance composed of solid crystals of different minerals that have been fused together into a solid lump.

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