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This specimen shows well the basic color of staurolite, and we can also see some aspect of the twinning. The white masses around the crystal are part of the muscovite schist the mineral was inbedded in.
Yellowish brown, reddish to brownish black; vitreous (glassy) luster; stubby, prismatic crystals with pseudo-hexagonal cross section; hardness 7-7.5; poor cleavage lengthwise.