Schneiderhohnite Mineral Data

Schneiderhohnite Mineral Data
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General Schneiderhohnite Information

Help on Chemical Formula: Chemical Formula: Fe++Fe+++3As+++5O13
Help on Composition: Composition: Molecular Weight = 805.99 gm
   Iron     27.72 %  Fe    8.91 % FeO / 29.72 % Fe2O3
   Arsenic  46.48 %  As   61.37 % As2O3
   Oxygen   25.81 %  O
           ______        ______ 
           100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Fe2+Fe3+3As5O13
Help on IMA Status: IMA Status: Approved IMA 1973
Help on Locality: Locality: Tsumeb, Namibia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Hans Schneiderhöhn (1887-1962), German mineralogist.
Help on Name Pronunciation: Name Pronunciation: Schneiderhohnite + Pronunciation Say SCHNEIDERHOHNITE
Help on Synonym: Synonym: Schneiderhoehnite
 

Schneiderhohnite Image

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Schneiderhohnite

Comments: Quartz with a 0.8 cm partial crystal of schneiderhöhnite and several smaller complete crystals of schneiderhöhnite to 3 mm.
Location: Tsumeb Mine, Tsumeb, Namibia. Scale: Picture size 1.5 cm.
© John Veevaert

Schneiderhohnite Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =0.8909:1:0.9088
Help on Cell Dimensions: Cell Dimensions: a = 8.924, b = 10.016, c = 9.103, Z = 2; alpha = 59.91°, beta = 112.41°, gamma = 81.69° V = 644.00 Den(Calc)= 4.16
Help on Crystal System: Crystal System: Triclinic - PinacoidalH-M Symbol ( 1) Space Group: P1
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.891(1), 3.583(1), 7.25(1),
Click Here for Large Schneiderhohnite Structure Window Crystal Structure:

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Hawthorne F C , The Canadian Mineralogist , 23 (1985) p.675-679, Schneiderhohnite, (Fe2+)(Fe3+)3As5O13, a densely packed arsenite, structure

 

Physical Properties of Schneiderhohnite

Help on Cleavage: Cleavage: {100} Perfect
Help on Color: Color: Brown, Black.
Help on Density: Density: 4.3
Help on Diaphaneity: Diaphaneity: Opaque
Help on Habit: Habit: Platy - Sheet forms (e.g. micas).
Help on Hardness: Hardness: 3 - Calcite
Help on Luster: Luster: Sub Metallic
Help on Streak: Streak: brownish black
 

Optical Properties of Schneiderhohnite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.023 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.029 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2472,KPDmeas= 0.2605,KC= 0.2546
Ncalc = 2.09 - 2.15
Help on Optical Data: Optical Data: Biaxial (+), a=2.11, g=2.13, bire=0.0200
Help on Pleochroism (x): Pleochroism (x): yellow.
Help on Pleochroism (z): Pleochroism (z): reddish brown.
 

Calculated Properties of Schneiderhohnite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.98 gm/cc
note: Specific Gravity of Schneiderhohnite =4.30 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0059996683
Boson Index = 0.9940003317
Help on Photoelectric: Photoelectric: PESchneiderhohnite = 41.16 barns/electron
U=PESchneiderhohnite x rElectron Density= 163.83 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Schneiderhohnite is Not Radioactive
 

Schneiderhohnite Classification
Help on Dana Class: Dana Class: 45.01.12.01 (45)Acid and normal Antimonites, Arsenites and Phosphites
  (45.01)with miscellaneous formulae
  (45.01.12)Dana Group
 
45.01.12.01 Schneiderhohnite FeFe3As5O13 P1 1
Help on Strunz Class: Strunz Class: 04.JA.35 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate
  04.J - Arsenites, Antimonites, Bismuthites, Sulfites,
  04.JA -Arsenites, antimonites, bismuthites; without additional anions, without H2O
 
04.JA.35 Schneiderhohnite FeFe3As5O13 P1 1
 

Other Schneiderhohnite Information
Help on References: References: NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Dana8)
Help on See Also: See Also: Links to other databases for Schneiderhohnite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info
15 - WWW-MINCRYST

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

Schneiderhohnite

Fe++Fe+++3As+++5O13
Dana No: 45.01.12.01 Strunz No: 04.JA.35
Locality:

 

Notes: