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- Uranpyrochlore (of Hogarth 1977), also known as ellsworthite or betafite (Ca,U)2(Ti,Nb,Ta)2O6(OH) is a rare earth mineral mostly found in the northern parts of North America. It is a uranpyrochlore and is named after Hardy V. Ellsworth of the Canadian Geological Survey by Walker and Parsons. It is a very uranium- and thorium- rich mineral, which in fact makes it slightly radioactive. Uranium makes up about 17.1% of the mineral. Ellsworthite is also known as the mineral Betafite. Ellsworthite is a thorium-bearing mineral that is found mostly in Canada and Alaska. It was first discovered in Hybla, Ontario, which is now a ghost town. (en)
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- 3285 (xsd:nonNegativeInteger)
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- amber yellow to dark brown; translucent or opaque (en)
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- Uranpyrochlore (of Hogarth 1977), also known as ellsworthite or betafite (Ca,U)2(Ti,Nb,Ta)2O6(OH) is a rare earth mineral mostly found in the northern parts of North America. It is a uranpyrochlore and is named after Hardy V. Ellsworth of the Canadian Geological Survey by Walker and Parsons. It is a very uranium- and thorium- rich mineral, which in fact makes it slightly radioactive. Uranium makes up about 17.1% of the mineral. Ellsworthite is also known as the mineral Betafite. Ellsworthite is a thorium-bearing mineral that is found mostly in Canada and Alaska. It was first discovered in Hybla, Ontario, which is now a ghost town. (en)
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- Uranpyrochlore (en)
- (of Hogarth 1977) (en)
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