$475Median
3520Sold (12 mo)
$365Last sale
Semseyite with Galena, Quartz
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Very good example for the species with crystal groupings of metallic semseyite measuring to almost 1.5 cm in size across the top of a crystallized quartz matrix with galena. This is in good condition.
The Herja Mine, historically known as Kisbanya and located in the Maramures County of Romania, is a legendary underground mining district with operations dating back to medieval times and expanding heavily through the 19th and 20th centuries. Geologically, the deposit is situated within the Neogene volcanic arc of the Inner Carpathians, featuring complex hydrothermal vein systems hosted in volcanic and sedimentary rocks driven by extensive magmatic activity. Mineralogically, Herja is world-famous among collectors and museums for producing some of the finest epithermal ore specimens ever found, most notably brilliant, razor-sharp crystals of stibnite, berthierite, quartz, and various sulfides that display exceptional crystal size and metallic luster.
Semseyite is an uncommon lead antimony sulfosalt mineral. First described in 1881 by Hungarian mineralogist Jozsef Krenner based on material from Baia Sprie, Romania, it was named in honor of the Hungarian aristocrat and mineral collector Andor von Semsey. Geologically, semseyite typically forms in mid-temperature hydrothermal veins, often associated with other sulfides and sulfosalts like sphalerite, galena, jamesonite, and pyrite. Mineralogically, it crystallizes in the monoclinic system and is characterized by dark gray to metallic steel-black tabular or elongated prismatic crystals that frequently form rosette-like or radiating aggregates, with world-class specimens historically originating from the famous mines of Romania.
Product details
SizeCabinet
Dimensions13.5 x 9.0 x 4.5 cm
Listed on08/15/2026
LocalityRomania, Maramureș County, Herja Mine
SKU2312634
Current owner
WM
Weinrich MineralsFeatured
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Mineral guide
Learn about Quartz
a versatile mineral with clear, milky, and colored varieties; crystal forms, formation clues, and tips for identifying amethyst and citrine.Regional guide
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