Sphalerite, Siderite
Miniature, 4.2 x 3.3 x 1.6 cm
Middle Fork of the Snoqualmie River, Snoqualmie District, King Co., Washington, USA
Beautiful clusters of highly lustrous, complexly twinned sphalerite crystals nicely set on contrasting matrix with tan siderite blades from a most uncommon King County, Washington locality, the Vanishing Derelict Copper Prospect. 4.2 x 3.3 x 1.6 cm