Quartz with Sphalerite, Siderite, Calcite, Chalcopyrite

specimen number:
2312175

location:
Boldut Mine, Cavnic, Maramures Co., Romania

description:

An aesthetic glassy gemmy colorless crystal of quartz to 10.0 cm in size coming off of a matrix covered by crystallized sphalerite, siderite, calcite, and chalcopyrite. This is in excellent condition.

The Boldut Mine, situated in the Cavnic mining district of Maramures County, Romania, is part of a historic polymetallic extraction center with roots dating back centuries. Geologically, the deposit lies within the Neogene volcanic belt of the Eastern Carpathians, where complex hydrothermal vein systems cut through volcanic and sedimentary host rocks. These epithermal solutions deposited rich concentrations of lead, zinc, copper, gold, and silver ores. Beyond its industrial mining history, the Boldut Mine is internationally famous among mineral collectors for producing magnificent specimens of quartz, rhodochrosite, and carbonates in association with various sulfide minerals such as pyrite, sphalerite, and galena.

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