Introduction Homepage (U.S. National Park Service)
If yes, see a below. Do all cleavage surfaces join at right angles? If yes, see (1) and (2) below. If the mineral is black, with a metallic luster and shows a black streak, the mineral is GALENA. If the mineral is light in color, and tastes salty, the mineral is HALITE. If not, see b below. ................
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