U = 39.2 percent.
Color: Bright green. Rare 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
- A trigonal mineral, Na2 Ca(UO2 )(CO3 )3
2 O ; bright yellow-green; secondary.
Dictionary of Mining, Mineral, and Related Terms