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Comments: Silvery metallic crystalline plagionite with brassy chalcopyrite.
Location: Rocker Creek, Jefferson County, Montana, USA.
Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species
Comments: Lead-gray crystals (to 2mm) of plagionite with a bluish tarnish on vuggy white calcite matrix.
Location: Wolfsberg, Harz, Germany.
Scale: 3.5 x 2.5 x 1.5cm.
© Tom Loomis / Dakota Matrix