Chemical Formula: (Th,Pb,Ca)PO4·(H2O)
Help on Composition: Composition: Molecular Weight = 318.38 g
 
Hydrogen 0.63 % H 5.66 % H2O 0.00 %
Oxygen 25.13 % O 0.00 % 0.00 %
Phosphorus 9.73 % P 22.29 % P2O5 0.00 %
Calcium 1.26 % Ca 1.76 % CaO 0.00 %
Lead 19.52 % Pb 21.03 % PbO 0.00 %
Thorium 43.73 % Th 49.76 % ThO2 0.00 %


100.00 % 100.50 %
 
Help on Empirical Formula: Empirical Formula: Th0.6Pb0.3Ca0.1(PO4)·(H2O)
Help on Environment: Environment: Lithium pegmatites
Help on Locality: Locality: Gooddays mine, Mtoko, and the Mahaka claim, Wedza, Zimbabwe.. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Anton Gray, mining engineer, advisor to U. K. Atomic Energy Authority
Help on Synonym: Synonym: