Ullmannite specimens for sale
4 for sale · $400–$7,500 USD
7 in the gallery
Ullmannite is a nickel antimonide mineral that crystallizes in the orthorhombic system. It typically forms metallic, silvery to steel-gray crystals with a high lustre and a dense, sometimes tabular habit. The mineral can appear as sharp, well-formed crystals set in massive or granular aggregates, reflecting its polished surface and metallic sheen. It is commonly associated with ultrabasic to sulphide-rich veins where nickel and antimony-bearing minerals occur, and it sometimes occurs in crystalline masses that show a metallic luster when exposed in hand specimens.
- Formula
- NiSbS
- Rarity
- Rare
- Stability
- Stable
- Collector interest
- Niche Interest
- Classification notes
- Sulfosalt; nickel antimony sulfide (NiSbS)
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Where Ullmannite is found
Top localities
- Monte Narba Mine2 specimens
- Masaloni Mine1 specimen
- Sardinia1 specimen
- Siegen1 specimen
- Siegerland1 specimen
- Olsberg1 specimen
About Ullmannite
Notable specimens of ullmannite have been reported from classic European localities, including Italian and German mining districts known for nickel-sulphide mineralization and antimony-bearing assemblages. Collectors value well-formed crystals and aesthetically pleasing assemblies that demonstrate the mineral’s metallic brass-to-silvery appearance and its compact, lustrous crystals. While the mineral is not among the most common sulfide minerals, its distinct composition and rarity in high-quality crystal form make it a desirable addition for mineral cabinets and display boards.