Söhngeite
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Two aggregates of cream-coloured söhngeite, the largest of which measures 6 mm across, rest on a blackish matrix. The söhngeite aggregates are made up of penetration twins, in which the individual crystals present with a characteristic perpendicular orientation. Two small, elongated, transparent crystals (probably stibioclaudetite?) are also on the gangue. This remarkable specimen was originally in the collection of Professor Hugo Strunz, who described söhngeite as a new mineral from Tsumeb (Strunz, 1965).
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