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powellite
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Basalt sample returned by Apollo 15, from near a long sinous lunar valley called Hadley Rille. Measured at 3.3 years old.
(Bed) Rocks and (Flint) Stones
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powellite

mineral
Also known as: calcium molybdate
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History

powellite, the mineral calcium molybdate, CaMoO4, ordinarily found only as a component of solid solutions in the calcium tungstate mineral scheelite (q.v.).

This article was most recently revised and updated by John P. Rafferty.