Hausmannite Mineral Data + Say HAUSMANNITE

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General Hausmannite Information
Help on Chemical Formula: Chemical Formula: Mn++Mn+++2O4
Help on Composition: Composition: Molecular Weight = 228.81 gm
   Manganese  72.03 %  Mn  103.50 % Mn2O3
   Oxygen     27.97 %  O
             ______        ______ 
             100.00 %      103.50 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Mn3+3O4
Help on Environment: Environment: A primary mineral in hydrothermal veins. Also produced by metamorphism of manganiferous rocks.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1827
Help on Locality: Locality: Ilmenau and nearby at Orenstock, in Thuringia, Germany. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after the German mineralogist, J. F. L. Hausmann (1782-1859).
Help on Synonym: Synonym: ICSD 68174
  PDF 24-734
 

Hausmannite Image

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Hausmannite   Ephesite

Comments: Flesh-colored ephesite associated with dark brownish black hausmannite.
Location: Gloucester mine. Postmasburg, Cape province. S. Africa. Scale: 5.5 x 5 cm.
© Fabre Minerals
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Hausmannite

Comments: Black hausmannite crystals with minor brucite.
Location: Wessels Mine, Kalahari, South Africa. Scale: 6.5 x 6 cm.
© John Veevaert
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Hausmannite   Kombatite

Comments: Yellow kombatite crystals in black hausmannite.
Location: Kombat Mine, Otavi, Namibia. Scale: Picture size 4 mm.
© Thomas Witzke / Abraxas-Verlag
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Hausmannite   Fredrikssonite

Comments: Red-brown elongated crystalline fredrikssonite in calcite with granular hausmannite.
Location: Langban, Varmland, Sweden. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species
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Hausmannite   Filipstadite

Comments: Dark minute grains of filipstadtite in hausmannite (slabbed specimen).
Location: Jacobsberg Mine, near Nordmark, Filipstad, Varmland, Sweden. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Hausmannite Crystallography
Help on Axial Ratios: Axial Ratios: a:c = 1:1.63888
Help on Cell Dimensions: Cell Dimensions: a = 5.76, c = 9.44, Z = 4; V = 313.20 Den(Calc)= 4.85
Help on Crystal System: Crystal System: Tetragonal - Ditetragonal DipyramidalH-M Symbol (4/m 2/m 2/m) Space Group: I 41/amd
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.49(1), 2.77(0.9), 1.544(0.8),
Help on Forms: Forms:

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Forms: [ 1 0 0] [ 0 1 1] [ 0 0 1]

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Baron V , Gutzmer J , Rundlof H , Tellgren R , American Mineralogist , 83 (1998) p.786-793, The influence of iron substitution on the magnetic properties of hausmannite,, Mn(Fe,Mn)2O4, Sample at T = 295 K, natural

View Additional jPOWD Structure files for Hausmannite
[1] [2]
 

Physical Properties of Hausmannite

Help on Cleavage: Cleavage: [001] Perfect
Help on Color: Color: Brownish black, Grayish.
Help on Density: Density: 4.7 - 4.84, Average = 4.76
Help on Diaphaniety: Diaphaniety: Opaque
Help on Fracture: Fracture: Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern.
Help on Habit: Habit: Massive - Granular - Common texture observed in granite and other igneous rock.
Help on Habit: Habit: Pseudo Octohedral - Crystals show an octohedral outline.
Help on Hardness: Hardness: 5.5 - Knife Blade
Help on Luminescence: Luminescence: None.
Help on Luster: Luster: Sub Metallic
Help on Magnetism: Magnetism: Nonmagnetic
Help on Streak: Streak: dark reddish brown
 

Optical Properties of Hausmannite

Help on Dichroism (e): Dichroism (e): dark gray.
Help on Dichroism (w): Dichroism (w): light gray.
Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.122 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= 0.136 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2691,KPDmeas= 0.2736,KC= 0.3115
Help on Optical Data: Optical Data: Uniaxial (-), e=2.15, w=2.46, bire=0.3100.
Help on RL Anisotrophism: RL Anisotrophism: Distinct.
Help on RL Bireflectance: RL Bireflectance: Weak.
Help on RL Color: RL Color: Gray, with deep blood red to reddish brown internal reflections.
Help on Reflectivity Reflectivity
Standardized Intensity (100%) Reflection Spectra of Hausmannite in Air
λ R1 R2  ∑ R1(λ)   ∑ R2(λ) 
 400 nm   21.50   18.80 
   
 420 nm   21.20   18.40 
 440 nm   20.90   17.90 
 460 nm   20.70   17.50 
 480 nm   20.50   17.20 
 500 nm   20.40   17.00 
 520 nm   20.40   16.70 
 540 nm   20.30   16.40 
 560 nm   20.10   16.10 
 580 nm   20.10   15.90 
 600 nm   20.00   15.70 
 620 nm   19.90   15.50 
 640 nm   19.90   15.40 
 660 nm   19.80   15.20 
 680 nm   19.80   15.10 
 700 nm   19.70   14.90 
Calculated Relative Intensity Colors of Hausmannite in Air
Relative
Intensity		    0%   60% 100% 120% 180% 240% 300% 360% 420% 480% 540% 560%
R1                        
R2                        
 

Calculated Properties of Hausmannite

Help on Electron Density: Electron Density:

relectron=4.46 gm/cc
note: rHausmannite =4.77 gm/cc.
Help on Fermion Index Fermion Index Fermion Index = 0.00013
Boson Index = 0.99987
Help on Photoelectric: Photoelectric:

PEHausmannite = 19.02 barns/electron
U=PEHausmannite x relectron= 84.86 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Hausmannite is Not Radioactive
 

Hausmannite Classification
Help on Dana Class: Dana Class: 7.2.7.1 (7)Multiple Oxides
  (7.2)(A+ B++)2 X4 Spinel group
  (7.2.7)Dana Group
 
7.2.7.1 Hausmannite MnMn2O4 I 41/amd 4/m 2/m 2/m
 
7.2.7.2 Hetaerolite ZnMn2O4 I 41/amd 4/m 2/m 2/m
 
7.2.7.3 Hydrohetaerolite Zn2Mn4O8·(H2O) I 41/amd 4/m 2/m 2/m
Help on Strunz Class: Strunz Class: IV/B.05-10 IV - Oxides
  IV/B - Oxides with metal : oxygen = 3:4 (spinel type M3O4 and related)
  IV/B.05 - Hausmannite - Filipstadite series
 
IV/B.05-10 Hausmannite MnMn2O4 I 41/amd 4/m 2/m 2/m
 
IV/B.05-20 Iwakiite Mn(Fe,Mn)2O4 P 41/nnm 4/m 2/m 2/m
 
IV/B.05-30 Donathite? (Fe,Mg)(Cr,Fe)2O4 P 4/nnm 4/m 2/m 2/m
 
IV/B.05-40 Hetaerolite ZnMn2O4 I 41/amd 4/m 2/m 2/m
 
IV/B.05-50 Hydrohetaerolite Zn2Mn4O8·(H2O) I 41/amd 4/m 2/m 2/m
 
IV/B.05-60 Marokite CaMn2O4 Pmab 2/m 2/m 2/m
 
IV/B.05-65 Tegengrenite! (Mg,Mn)2Sb0.5(Mn,Si,Ti)0.5O4 R 3 or R 3- Trig
 
IV/B.05-80 Filipstadite (Mn,Mg)4SbFeO8 pseudo ISO 2/m 2/m 2/m
 

Other Hausmannite Information
Help on References: References: NAME( AntBidBlaNic3) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic3)
Help on See Also: See Also: Links to other databases for Hausmannite :
1 -Am. Min. Crystal Structure Database 2 - Amethyst Galleries' Mineral Gallery 3 - Applied Mineralogy 4 -Athena 5 - Crocoite.com Mineral Locations 6 - EUROmin Project 7 - Franklin Minerals(Dunn) 8 -Google Images 9 -Google Scholar 10 -Handbook of Mineralogy (UofA) 11 - HyperPhysics 12 -MinDAT 13 -MinMax(Deutsch) 14 -MinMax(English) 15 -Mineralienatlas (Deutsch) 16 -QUT Mineral Atlas 17 - Scandinavian mineral gallery 18 - WWW-MINCRYST 19 -École des Mines de Paris

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Print or Cut-and-Paste your Hausmannite Specimen Label here :

Hausmannite

Mn++Mn+++2O4
Dana No: 7.2.7.1 Strunz No: IV/B.05-10
Locality:

 

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