Rare group of tubular, hexagonal quartz crystals, their surface covered by a finely crystalline coating. From a cavity in igneous rock near Sao Gabrie

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Rare group of tubular, hexagonal quartz crystals, their surface covered by a finely crystalline coating. From a cavity in igneous rock near Sao Gabriel, Rio Grande do Sul, Brazil. Full width of specimen is 230 mm.

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Size: 5616px × 3744px
Photo credit: © DIRK WIERSMA/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: brazil, cavity, coating, crystalline, crystallography, crystals, earth, finely, geological, geology, hexagon, hexagonal, hollow, igneous, mineral, mineralogy, quartz, rock, sciences