36293: Alum-(K) - $8 Silver Peak, Silver Peak Mining District, Esmeralda County, Nevada Small cabinet - 7.8 x 4.1 x 3.2 cm 76 grams Specimen status: Available Send an email with specimen number to order A slightly curved, somewhat friable
mass of naturally occurring potassium alum - KAl(SO4)2ยท12H2O.
Water soluble, so don't spit on it. Typical for the
species/locality.
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