Age: Carboniferous, 300 Million years old, United States…
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Marion Lake, Ayre Peninsula, South Australia…
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Samalayuca Desert Mun. De Ahumada Chihuahua, Mexico…
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Bellsgrove Quarry, Strontian, North West Highlands Scotland, United Kingdom…
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Broken Hill, New South Wales, Australia…
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Broken Hill, New South Wales, Australia…
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Sweetwater Mine Ellington, Viburnum Trend District, Missuori, USA…
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Dreislar Mine, Dreislar Winterberg, Sourland North Rhine-Westphala, Germany…
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Xikuangshan,Lengshuijiang, Hunan Province, China…
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Whim Creek, Western Australia…