wakabayashilite

From Mindat.Org Photo Of The Day; December 4, 2015:

Wakabayashilite: [(As,Sb)6S9][As4S5]

Locality: White Caps Mine, Manhattan, Manhattan District, Toquima Range, Nye Co., Nevada, USA

Huge crystals of wakabayashilite (what the old-timers called hair “orpiment”) to 3 cm in a 9 cm vug. The wakabayashilite needles rest on and include calcite crystals. W.M. Keck Museum (Mackay School of Mines) collection, Ben Schumer photo