- An orthorhombic mineral, Ca(UO2 )6 O4 (OH)6
.8H2 O , with barium and potassium substitution for calcium;
amber-yellow; a radioactive product of uraninite and ianthinite
Dictionary of Mining, Mineral, and Related Terms
Isostructural with billietite.
U = 75.7 percent.
Color: Amber to yellow. Uncommon secondary mineral.
Source: Frondel, Judith Weiss and Michael Fleischer. 1955. Glossary of
Uranium- and Thorium-Bearing Minerals, Third Edition. Washington DC: United
States Government Printing Office