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Hausmannite

This page kindly sponsored by Gerhard Niklasch
Formula:
Mn2+Mn23+O4
System:
Tetragonal
Colour:
Brown-black
Hardness:
Name:
Named by Wilhelm Haidinger in in 1827 in honor of Johann Friedrich Ludwig Hausmann (1782-1859), Professor of Mineralogy, University of Göttingen, Germany.
This page provides mineralogical data about Hausmannite.

Classification of Hausmannite

Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
4.BB.10

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
B : Metal: Oxygen = 3:4 and similar
B : With only medium-sized cations
7.2.7.1

7 : MULTIPLE OXIDES
2 : AB2X4
7.18.2

7 : Oxides and Hydroxides
18 : Oxides of Mn
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http://www.mindat.org/min-1832.html
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Type Occurrence of Hausmannite

Year of Discovery:
1813

Physical Properties of Hausmannite

Sub-Metallic
Colour:
Brown-black
Streak:
Dark brown
Hardness (Mohs):
Tenacity:
Brittle
Cleavage:
Very Good
{001} nearly perfect; {112} and {011} indistinct.
Fracture:
Irregular/Uneven
Density:
4.83 - 4.85 g/cm3 (Measured)    4.84 g/cm3 (Calculated)

Crystallography of Hausmannite

Crystal System:
Tetragonal
Class (H-M):
4/mmm (4/m 2/m 2/m) - Ditetragonal Dipyramidal
Space Group:
I41/amd
Cell Parameters:
a = 5.76Å, c = 9.46Å
Ratio:
a:c = 1 : 1.642
Unit Cell Volume:
V 313.86 ų (Calculated from Unit Cell)
Morphology:
Pseudo-octahedral {001}; {013} usually smooth and bright, {011} often dull and striated parallel to [100]. Massive, granular.
Twinning:
Twin plane {112}, often repeated as fivelings; also lamellar.

Crystallographic forms of Hausmannite

Crystal Atlas:
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Hausmannite no.3 - Goldschmidt (1913-1926)
Hausmannite no.12 - Goldschmidt (1913-1926)
Hausmannite no.13 - Goldschmidt (1913-1926)
3d models and HTML5 code kindly provided by www.smorf.nl.

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Epitaxial Relationships of Hausmannite

Epitaxial Minerals:
JacobsiteMn2+Fe23+O4
Epitaxy Comments:
Oriented intergrowths.
X-Ray Powder Diffraction:
Image Loading

Radiation - Copper Kα
Data Set:
Data courtesy of RRUFF project at University of Arizona, used with permission.
X-Ray Powder Diffraction Data:
d-spacingIntensity
4.924 (30)
3.089 (40)
2.768 (85)
2.487 (100)
1.7988 (25)
1.5762 (25)
1.5443 (50)

Optical Data of Hausmannite

Type:
Anisotropic
Anisotropism:
Distinct
Colour in reflected light:
Grey-white
Internal Reflections:
Deep blood-red to red-brown
Pleochroism:
Weak
Comments:
O = light grey=white; E = dark grey-white
Comments:
Lamellar twinning in polished sections often visible.

Chemical Properties of Hausmannite

Formula:
Mn2+Mn23+O4
Essential elements:
All elements listed in formula:
Common Impurities:
Zn,Fe,Ca,Ba,Mg

Relationship of Hausmannite to other Species

Other Members of Group:
HetaeroliteZnMn2O4
HydrohetaeroliteZnMn2O4 · H2O
IwakiiteMn2+Fe23+O4
4.BB.05ChromiteFe2+Cr23+O4
4.BB.05Cochromite(Co,Ni,Fe)(Cr,Al)2O4
4.BB.05CoulsoniteFe2+V23+O4
4.BB.05CuprospinelCu2+Fe23+O4
4.BB.05Filipstadite(Sb0.5Fe0.5)Mn2O4
4.BB.05FrankliniteZn2+Fe23+O4
4.BB.05GahniteZnAl2O4
4.BB.05Galaxite(Mn,Fe,Mg)(Al,Fe)2O4
4.BB.05HercyniteFe2+Al2O4
4.BB.05JacobsiteMn2+Fe23+O4
4.BB.05Manganochromite(Mn,Fe)(Cr,V)2O4
4.BB.05MagnesiocoulsoniteMgV2O4
4.BB.05MagnesiochromiteMg(Cr,Al,Fe)2O4
4.BB.05MagnesioferriteMgFe23+O4
4.BB.05MagnetiteFe2+Fe23+O4
4.BB.05Nichromite(Ni,Co,Fe)(Cr,Fe,Al)2O4
4.BB.05Qandilite(Mg,Fe)2(Ti,Fe,Al)O4
4.BB.05SpinelMgAl2O4
4.BB.05TrevoriteNi2+Fe23+O4
4.BB.05UlvöspinelFe2TiO4
4.BB.05Vuorelainenite(Mn,Fe)(V,Cr)2O4
4.BB.05ZincochromiteZnCr2O4
4.BB.10HetaeroliteZnMn2O4
4.BB.10HydrohetaeroliteZnMn2O4 · H2O
4.BB.10IwakiiteMn2+Fe23+O4
4.BB.15MaghemiteFe23+O3
4.BB.15TitanomaghemiteFe3+(Fe3+,Ti4+,Fe2+,◻)2O4
4.BB.20Tegengrenite(Mg,Mn2+)2Sb5+0.5(Mn3+,Si,Ti)0.5O4
4.BB.25XieiteFe2+Cr2O4
7.18.1ManganositeMnO
7.18.3PyrolusiteMnO2
7.18.4RamsdelliteMn4+O2
7.18.5Akhtenskiteε-Mn4+O2
7.18.6FeitknechtiteMn3+O(OH)
7.18.7ManganiteMn3+O(OH)
7.18.8GroutiteMn3+O(OH)
7.18.9Nsutite(Mn4+,Mn2+)(O,OH)2
7.18.10PyrochroiteMn(OH)2
7.18.11Birnessite(Na,Ca)0.5(Mn4+,Mn3+)2O4 · 1.5H2O
7.18.12Aurorite(Mn2+,Ag,Ca)Mn34+O7 · 3H2O
7.18.13CianciulliiteMn(Mg,Mn)2Zn2(OH)10 · 2-4H2O

Other Names for Hausmannite

Other Information

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Hausmannite

Reference List:
Hausmann, J.F.L. (1813): Blättricher Schwarz-Braunstein.- Handbuch der Mineralogie, Vol. 1, p. 293. Göttingen.

Haidnger, W. (1827), Royal Society of Edinburgh, Transactions: 11: 127.

Haidinger, W. (1828), Mineralogische Beschreibung der Manganerze. I. Prismatoïdisches Manganerz, Manganit. II. Pyramidales Manganerz, Hausmannit. III. Untheilbares Manganerz, Psilomelan. IV. Brachytypes Manganerz, Braunit. V. Prismatisches Manganerz, Pyrolusit: Poggendorffs Annalen der Physik und Chemie: 14: 197-211.

Rammelsberg (1865), Ann. Phys.: 124: 521.

Flink (1888), Ak Stockholm, Bh.: 12(7): 40.

Koechlin (1908), Min. Mitt.: 27: 262.

Miser and Fairchild (1920), Washington Academy of Science Journal: 10: 1.

Krüll (1932), Chem. Erde: 7: 473.

Aminoff (1936), Zs. Kr.: 64: 475.

Palache, Charles, Harry Berman & Clifford Frondel (1944), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana Yale University 1837-1892, Seventh edition, Volume I: 707, 712-715.

Mineralogy and Petrology: 37: 15-23.

Neues Jahrbuch für Mineralogie, Monatshefte (1974): 375.

Internet Links for Hausmannite

Specimens:
The following Hausmannite specimens are currently listed for sale on minfind.com.

Localities for Hausmannite

map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
Mineral and/or Locality  
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