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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... - Floris van Breugel
01300702
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...
American Bison (Bison bison) covered in snow, Lamar Valley, Yellowstone National Park, Wyoming, USA. December. - Floris  van Breugel
01470791
Floris van Breugel / American Bison (Bison bison) covered in snow, Lamar Valley, Yellowstone National Park, Wyoming, USA. December.
A wide variety of fluorescent minerals including scheelite (blue/white), calcite (red), silica coatings containing uranyl ions (green), fluorite (pink), and 'desert varnish' (yellow/orange), populate... - Floris van Breugel
01410480
Floris van Breugel / A wide variety of fluorescent minerals including scheelite (blue/white), calcite (red), silica coatings containing uranyl ions (green), fluorite (pink), and 'desert varnish' (yellow/orange), populate...