Floris van Breugel / Various fluorescent minerals : 1Willemite, New Jersey, 2: Willemite and Calcite, New Jersey, 3: Fluorite, Ohio, 4: Willemite and Calcite, New Jersey. 5: Fluorite, California. 6: Scheelite, California....
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Floris van Breugel / A rock collector explores piles of fluorescent minerals found in the tailings of the Pacific Tungsten Mine near Darwin, California. The bright colours are caused by fluorescence excited by a shortwave...
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George Sanker / Calcite Springs Overlook, view of Grand Canyon of Yellowstone in evening light. Yellowstone National Park, Wyoming, USA. June 2018.
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Philippe Clement / Flowstone, sheetlike deposits of calcite suspended from ceiling in the Caves of Han-sur-Lesse / Grottes de Han, Ardennes, Belgium
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Mike Read / Tower Canyon Gorge near Calcite Springs, Yellowstone Nataional Park, Wyoming, USA, June 2015
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John Cancalosi / Leesburg Limestone Conglomerate from Frederick county Maryland, USA. Consists of fragments of lower Paleozoic limestone, dolomitic limestone, quartzite, quartz, schist, slate, and greenstone in a clay...
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John Cancalosi / Leesburg Limestone Conglomerate from Frederick county Maryland, USA. Consists of fragments of lower Paleozoic limestone, dolomitic limestone, quartzite, quartz, schist, slate, and greenstone in a clay...
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Yva Momatiuk & John Eastcott / African Elephant (Loxodonta africana) male, stained white by white clay and calcite sand, grazing on vegetation in dry season, Etosha National Park, Namibia
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Yva Momatiuk & John Eastcott / African Elephant (Loxodonta africana) male, stained white by white clay and calcite sand, grazing on vegetation in dry season, Etosha National Park, Namibia
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Yva Momatiuk & John Eastcott / African Elephant (Loxodonta africana) male, stained white by white clay and calcite sand, crossing road, Etosha National Park, Namibia
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Yva Momatiuk & John Eastcott / African Elephant (Loxodonta africana) male, stained white by white clay and calcite sand, Etosha National Park, Namibia
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Yva Momatiuk & John Eastcott / African Elephant (Loxodonta africana) male, stained white by white clay and calcite sand, Etosha National Park, Namibia