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hercynite
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hercynite
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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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Related Topics:
spinel series
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mineral
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History

hercynite, the mineral iron aluminum oxide, a member of the spinel (q.v.) series.

This article was most recently revised and updated by Amy Tikkanen.