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calamine
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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
Quick Facts
Related Topics:
mineral
hemimorphite
smithsonite
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calamine

mineral
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Britannica Editors
Encyclopaedia Britannica's editors oversee subject areas in which they have extensive knowledge, whether from years of experience gained by working on that content or via study for an advanced degree....
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History

calamine, either of two zinc minerals. The name has been dropped in favour of the species names hemimorphite (q.v.; hydrous zinc silicate) and smithsonite (q.v.; zinc carbonate).