Galena with Chalcopyrite, Sphalerite

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Sharp penetration twinned crystals of galena to 3.0 cm in size across the top of a crystallized sphalerite matrix with golden chalcopyrite. This is in excellent condition. Fine large cabinet example for this type of twinning for the species and locality.The Turt Mine, located in the Oas Mountains of Satu Mare County in northwestern Romania, is part of a historic metallogenic region with long-standing underground mining operations targeting base and precious metals. Geologically, the deposit is situated within the Neogene volcanic belt of the Inner Carpathians, where subvolcanic structures and complex hydrothermal vein systems cut through older formations. These fluid systems deposited concentrated pockets of lead, zinc, and copper sulfides. The mine has gained recognition among mineral collectors for producing fine specimens of galena, quartz, and distinctive pseudomorphs or crystal casts involving siderite replacing earlier carbonate minerals.