#mid-wave uv
Calcite from the Buckwheat Dump at the Franklin Mineral Museum, Franklin, NJ. Pictured under long wave, mid-wave, and short wave ultraviolet, and white light.
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Black/gray/brown scheelite crystal from the Tae Hwa Mine, North Chungcheong Province, South Korea. Scheelite is an ore of tungsten. Shown exhibiting the classic blue fluorescence under short wave ultraviolet light, under white light, and showing the red fluorescence that is sometimes seen under mid-wave ultraviolet light. The nearly equilateral triangle edges measure approximately 1 ¾ inches or 4.4 cm.
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Baratovite from the type locality of the Dara-i-Pioz Glacier (Dara-Pioz), Alai Range (Alayskiy), Tien Shan Mtn, Districts of Republican Subordination, Tajikistan under short wave ultraviolet, mid-wave ultraviolet, and white light. The baratovite fluoresces bright bluish white under short wave UV. Also incorportated in the specimen are agrellite (fluorescent pink), albite (fluorescent red), aegirine (black, non-fluorescent), and an unknown fluorescent green mineral. The likely candidates for the unknown are willemite & thorite as they are known from the location. The location is in an extremely remote and dangerous area accessible only by helicopter.
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Black/gray/brown scheelite crystal from the Tae Hwa Mine, North Chungcheong Province, South Korea. Scheelite is an ore of tungsten. Shown exhibiting the classic blue fluorescence under short wave ultraviolet light, under white light, and showing the red fluorescence that is sometimes seen under mid-wave ultraviolet light. The nearly equilateral triangle edges measure approximately 1 ¾ inches or 4.4 cm.
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