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| category = [[Sulfide mineral]], [[pyrite group]]
| category = [[Sulfide mineral]], [[pyrite group]]
| formula = MnS<sub>2</sub>
| formula = MnS<sub>2</sub>
| IMAsymbol = Hr<ref>{{Cite journal|last=Warr|first=L.N.|date=2021|title=IMA–CNMNC approved mineral symbols|url=https://www.cambridge.org/core/journals/mineralogical-magazine/article/imacnmnc-approved-mineral-symbols/62311F45ED37831D78603C6E6B25EE0A|journal=Mineralogical Magazine|volume=85|issue=3|pages=291–320|doi=10.1180/mgm.2021.43|bibcode=2021MinM...85..291W|s2cid=235729616|doi-access=free}}</ref>
| IMAsymbol = Hr<ref>{{Cite journal|last=Warr|first=L.N.|date=2021|title=IMA–CNMNC approved mineral symbols|journal=Mineralogical Magazine|volume=85|issue=3|pages=291–320|doi=10.1180/mgm.2021.43|bibcode=2021MinM...85..291W|s2cid=235729616|doi-access=free}}</ref>
| molweight = 119.07 g/mol
| molweight = 119.07 g/mol
| strunz = 2.EB.05a
| strunz = 2.EB.05a
| dana =
| dana =
| system = [[Cubic crystal system|Cubic]]
| system = [[Cubic crystal system|Cubic]]
| class = Diploidal (m{{overline|3}}) <br/>[[H–M Symbol]]: (2/m {{overline|3}})
| class = Diploidal (m{{overline|3}}) <br/>[[H–M symbol]]: (2/m {{overline|3}})
| symmetry = ''Pa''{{overline|3}}
| symmetry = ''Pa''{{overline|3}}
| unit cell = a = 6.107&nbsp;Å; Z&nbsp;=&nbsp;4
| unit cell = a = 6.107&nbsp;Å; Z&nbsp;=&nbsp;4
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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).<ref name=HBM/><ref name=Mindat/>
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).<ref name=HBM/><ref name=Mindat/>


It is found in Texas,USA; the Ural Mountains of Russia and Sicily, Italy.<ref>{{Cite book |last= |first= |title=Rocks and Minerals |publisher=[[DK publishers]] |year=2012 |isbn=978 1 4093 8659 9 |editor-last=Star |editor-first=Fleur}}</ref>
It is found in Texas, US; the Ural Mountains of Russia, and Sicily, Italy.<ref>{{Cite book |last= |first= |title=Rocks and Minerals |publisher=[[DK publishers]] |year=2012 |isbn=978-1-4093-8659-9 |editor-last=Star |editor-first=Fleur}}</ref>


Under high pressure conditions (P>11 GPa), Hauerite undergoes a large collapse in unit cell volume (22 %) driven by a spin-state transition.<ref>[http://www.pnas.org/content/111/14/5106.abstract Kimber, S.A.J., et al., ''Giant pressure-induced volume collapse in the pyrite mineral MnS<sub>2</sub>,'' PNAS, April 8, 2014, vol. 111, no. 14, pp. 5106-5110]</ref>
Under high pressure conditions (P>11 GPa), Hauerite undergoes a large collapse in unit cell volume (22%) driven by a spin-state transition.<ref>[http://www.pnas.org/content/111/14/5106.abstract Kimber, S.A.J., et al., ''Giant pressure-induced volume collapse in the pyrite mineral MnS<sub>2</sub>,'' PNAS, April 8, 2014, vol. 111, no. 14, pp. 5106–5110]</ref>


==References==
==References==

Latest revision as of 21:55, 10 January 2024

Hauerite
General
CategorySulfide mineral, pyrite group
Formula
(repeating unit)		MnS2
IMA symbolHr[1]
Strunz classification2.EB.05a
Crystal systemCubic
Crystal classDiploidal (m3)
H–M symbol: (2/m 3)
Space groupPa3
Unit cella = 6.107 Å; Z = 4
Identification
Formula mass119.07 g/mol
ColorReddish brown or brownish black
Crystal habitOctahedral crystals and globular aggregates
Cleavage{100} Perfect, {010} Perfect, Perfect on {001}
FractureUneven to subconchoidal
TenacityBrittle
Mohs scale hardness4
LusterMetallic-adamantine
StreakReddish brown
DiaphaneityOpaque to subtranslucent
Specific gravity3.463
Optical propertiesIsotropic
Refractive indexn = 2.69
References[2][3][4]

Hauerite is a manganese sulfide mineral with the chemical formula MnS2. It forms reddish brown or black octahedral crystals with the pyrite structure and it is usually found associated with the sulfides of other transition metals such as rambergite. It occurs in low temperature, sulfur rich environments associated with solfataras and salt deposits in association with native sulfur, realgar, gypsum and calcite.[2]

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).[2][4]

It is found in Texas, US; the Ural Mountains of Russia, and Sicily, Italy.[5]

Under high pressure conditions (P>11 GPa), Hauerite undergoes a large collapse in unit cell volume (22%) driven by a spin-state transition.[6]

References[edit]

  1. ^ Warr, L.N. (2021). "IMA–CNMNC approved mineral symbols". Mineralogical Magazine. 85 (3): 291–320. Bibcode:2021MinM...85..291W. doi:10.1180/mgm.2021.43. S2CID 235729616.
  2. ^ a b c Anthony, John W.; Bideaux, Richard A.; Bladh, Kenneth W.; Nichols, Monte C. (2005). "Hauerite" (PDF). Handbook of Mineralogy. Mineral Data Publishing. Retrieved 1 August 2022.
  3. ^ Barthelmy, David (2014). "Hauerite Mineral Data". Webmineral.com. Retrieved 1 August 2022.
  4. ^ a b Hauerite, Mindat.org, retrieved 1 August 2022
  5. ^ Star, Fleur, ed. (2012). Rocks and Minerals. DK publishers. ISBN 978-1-4093-8659-9.
  6. ^ Kimber, S.A.J., et al., Giant pressure-induced volume collapse in the pyrite mineral MnS2, PNAS, April 8, 2014, vol. 111, no. 14, pp. 5106–5110
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