Hauerite
A variety of Pyrite Group
What is Hauerite?
Being a relatively rare mineral, hauerite is highly prized by collectors. This mineral is found in low-temperature environments such as solfataras, fumaroles, and marine and clay salt deposit rich in sulfur. The presence of this brownish-gray mineral is, in fact, used as an indicator of sulfur deposits in the area.
Etymology & Origins
It was discovered in Austro-Hungarian Monarchy in Kalinka (now Vígľašská Huta-Kalinka village) sulfur deposit near Detva in what is now Slovakia in 1846 and named after the Austrian geologists, Joseph Ritter von Hauer (1778–1863) and Franz Ritter von Hauer (1822–1899).
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Key Characteristics
Characteristics of Hauerite
Under high pressure conditions (P>11 GPa), Hauerite undergoes a large collapse in unit cell volume (22 %) driven by a spin-state transition.
Formation of Hauerite
It occurs in low temperature, sulfur rich environments associated with solfataras and salt deposits in association with native sulfur, realgar, gypsum and calcite.
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Quick Facts
Physical Properties
- Color
- Reddish-brown, black
- Hardness (Mohs)
- 4
- Density
- 3.444 g/cm³
- Streak
- Brownish red
- Luster
- Metallic
- Crystal System
- Isometric
Chemical Properties
- Chemical Formula
- MnS2
- Elements
- Mn, S
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