Siderite on Pyrite after Pyrrhotite
Unknown Owner
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Crystals of what were once pyrrhotite measuring to almost 3.0 cm in size, these now completely replaced by crystallized siderite. The siderite crystals cover the matrix completely as well. In excellent 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.
Product details
SpeciesPyrite, Pyrrhotite, Siderite
SizeSmall Cabinet
Dimensions9.0 x 6.0 x 2.0 cm
Added on08/10/2026
LocalityRomania, Maramureș County, Herja Mine
Known provenance
| Date | Collector | Acquisition price |
|---|---|---|
| 08/2026 | Unknown Owner | Not disclosed |
| — | Weinrich Minerals | Not disclosed |
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Mineral guide
Learn about Pyrite
brilliant metallic luster, perfect cubes, and golden color; collectors prize affordable pieces to top specimens, with Navajún and Huanzala localities.Regional guide
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