sphalerite
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Sphalerite
Credit: Mineral Information Institute
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Also known as zinc blende, the low-temperature (β) form of zinc sulfide
(ZnS); the chief ore of zinc, occurring worldwide
with galena. Sphalerite forms lustrous crystals
of the isomeric system, white when pure, but usually brown to black with
iron impurity. Related category
GEOLOGY
AND PLANETARY SCIENCE
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