Mineralogy Database

Boltwoodite Mineral Data

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General Boltwoodite Information

Help on Chemical  Formula: Chemical Formula: HK(UO2)(SiO4)•1.5(H2O)
Help on Composition: Composition: Molecular Weight = 429.24 gm
   Potassium   9.11 %  K    10.97 % K2O
   Uranium    55.45 %  U    62.91 % UO2
   Silicon     6.54 %  Si   14.00 % SiO2
   Hydrogen    0.94 %  H     8.39 % H2O
   Oxygen     27.96 %  O
             ______        ______ 
             100.00 %       96.27 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: HK(UO2)(SiO4)•1.5(H2O)
Help on Environment: Environment: In the outer silicate zone of alteration surrounding hydrated uranyl oxides incrusting primary uraninite; also filling fractures at some distance from primary uraninite.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1956
Help on Locality: Locality: In the USA, from the Delta mine, Emery Co., Utah; the New Method mine, near Amboy, San Bernardino Co., California. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: For Bertram Borden Boltwood (1870-1927), radiochemist of Yale University, New Haven, Connecticut, USA, who devised the U-Pb method of measuring geologic time.
Help on Name Pronunciation: Name Pronunciation: Boltwoodite + Pronunciation Say BOLTWOODITE
Help on Synonym: Synonym: ICSD 86631
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