Guide
Hausmannite specimens for sale
17 for sale · $150–$6,000 USD
29 in the gallery
Hausmannite is a manganese oxide mineral with the chemical formula Mn3+Mn2+2O4, commonly forming dark, metallic crystals that range from black to brownish in colour. It typically occurs as well-formed octahedra and can exhibit a strong, sub-metallic to metallic lustre, with a reasonably high refractive quality that makes individual crystals stand out when isolated or included in matrix. Notable specimens have long been sourced from manganese-rich deposits in South Africa and Sweden, with other producing regions including Germany and the UK; these localities are known for producing crystals that are relatively sizeable and sharply faceted, which appeals to collectors seeking bold habit and contrast against host rock.
- Formula
- Mn2+Mn3+2O4
- Rarity
- Common
- Stability
- Stable
- Collector interest
- Moderate Interest
- Classification notes
- Oxides; IMA classification: Oxides and hydroxides; Strunz 4.AB/2.1
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Hausmannite from Wessels Mine, South Africa
Wessels Mine: classic hausmannite crystals, jet-black, mirror-bright and pagoda-like, from a premier Kalahari manganese locality prized by collectors.Read guide
Guide
Hausmannite from N'Chwaning II Mine, South Africa
Hausmannite from N'Chwaning II Mine, South Africa - jet-black, high-luster dipyramidal crystals, often pagoda-like, prized by collectors for locality and form.Read guideAbout Hausmannite
Collectors value hausmannite for its distinctive coloration and the gleam of well-formed crystals, especially when accompanied by contrasting minerals or a solid, well-preserved crystal form. The mineral's reliability as a manganese oxide and its classic octahedral geometry contribute to its appeal as a mid-weight specimen for gallery displays and cabinet collections. While not as widespread as some classic oxides, well-crystallized hausmannite from historic or well-documented mines remains a sought-after addition to European and southern hemisphere collections.
