Silvery crystals and or foil-like plates the larges (in photo) to about 0.75
mm. The right photo was taken from the reverse side of the left photo, where
the best coverage is located.
Origin: Björkdal mine, Kåge, Skellefteå, Västerbotten, Sweden
Ex. Kidwell collection
Sample size: 14 x 7 x 5 mm
Silvery, thin platy crstals mixed with
tetradymite. Difficult to distinguish between the two in this specimen.
Origin: Tyrnyauz, Baksan Valley, N. Caucasus Region, Russia
Ex. Kidwell collection
Sample size: 4.5 x 4 x 3 cm
Photo courtesy of: