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An unknоwn minerаl hаs pооr cleаvage, is greenish-black, and cuts glass. The mineral is likely augite fluorite hornblende plagioclase feldspar azurite galena kaolinite potassium feldspar biotite garnet limonite pyrite calcite graphite magnetite quartz chalcopyrite gypsum malachite sphalerite chlorite halite muscovite talc dolomite hematite olivine
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