Item talk:Q162613

Mindat Short Description

Powellite-Scheelite Series.

An uncommon secondary mineral, typically formed in the oxidation zones of molybdenum-bearing hydrothermal deposits, rarely in basalt cavities, tactites, and granite pegmatites.

Geoscience Ontology Status Notes

Melville W H (1891) Powellite - calcium molybdate: A new mineral species, The American Journal of Science 141, 138-141

IMA Formula (from Mindat)

Ca(MoO₄)

RRUFF Formula (from Geoscience Ontology)

CaMo⁶⁺O₄

Additional References

• http://www.handbookofmineralogy.com/pdfs/powellite.pdf

• http://www.webmineral.com/data/Powellite.shtml