Calcite with Quartz

specimen number:
2312565

location:
Petrovitza Mine, Madan, Smolyon, Bulgaria

description:

The top of matrix is covered by glassy gemmy crystals of quartz measuring to 3.0 cm in size. Crystals of rhombohedral calcite are scattered throughout. In great condition and very attractive.

The Petrovitza Mine, situated within the famous Madan ore field of the Smolyan Province in southern Bulgaria, is part of a major lead, zinc, and silver mining district with a rich history spanning from ancient Thracian and Roman times to intensive modern industrial exploitation during the twentieth century. Geologically, the deposit is located within a metamorphic core complex of the Central Rhodopes, where hydrothermal quartz-sulfide veins and skarn-replacement bodies formed along major fault structures interacting with marble horizons. Mineralogically, Petrovitza and the broader Madan district are world-renowned among museum curators and collectors for producing exceptional, high-quality specimens of galena, sphalerite, pyrite, quartz, and distinctive carbonate minerals like poker-chip calcite.

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