Wulfenite

specimen number:
1052629

location:
Mezica, Slovenia

description:

Classic Slovenian specimen with blocky caramel colored lustrous crystals of wulfenite measuring to 1.0 cm in size very nice across the top of matrix. This is in great condition.

Mezica, located in the Karavanke Mountains of northern Slovenia near the Austrian border, is a world-class locality for lead and zinc mineralization, most famous for its exceptional specimens of wulfenite. Geologically, the deposit is classified as a Mississippi Valley-Type (MVT) system hosted within Middle Triassic Wetterstein limestone and dolomite, where tectonic fracturing allowed metal-rich fluids to precipitate galena and sphalerite. The wulfenite, a lead molybdate, formed as a secondary mineral in the oxidation zones of these ores, typically appearing as brilliant orange to yellow tabular crystals of remarkable size. Historically, mining and quarrying in the Mezica district date back to Roman times, but systematic industrial exploitation began in the 17th century and expanded significantly under the Austro-Hungarian Empire. The mines reached their peak production during the 19th and early 20th centuries, operating continuously through both World Wars until the depletion of high-grade ore led to the cessation of commercial mining in 1994. Since then, a portion of the vast underground labyrinth has been preserved as a mining museum and tourist attraction, allowing for the continued study of its unique alpine mineralogy. Today, Mezica remains a legendary name among mineralogists, with its classic wulfenite specimens representing some of the finest examples of the species known to science through 2026.

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