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dravite
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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

dravite

mineral
Also known as: magnesium tourmaline
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Related Topics:
gemstone
tourmaline

dravite, a brown, magnesium-rich variety of tourmaline. See tourmaline.

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