Specimen with veining and grains of steel gray uytenbogaardtite associated with
gold and
electrum (variety of
gold mixed
with silver) as micro grains less than 0.5 mm
Slab with good coverage showing grey crystal grains to 1 mm throughout matrix
with electrum (variety of
gold mixed
with silver)
Origin: Bullfrog mine, Nye Co., Nevada, U.S.A.
Sample size: 9 x 7 x 2.5 cm (top), 6 x 6 x 1 cm (bottom)
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