CHALCOPYRITE cluster with QUARTZ Pedro Claim, Middle Fork of the Snoqualmie River, Snoqualmie Mining District, King County, Washington, USA Specimen is 3.6 x 2.7 x 2.6 cm (1.4 x 1.1 x 1.0 in) Eli Hess Collection. Collected by John Lindell. Photo Copyright © 2023 Jeffrey M. Schwartz
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