Stottite Mineral Data

Stottite Mineral Data
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General Stottite Information

Help on Chemical Formula: Chemical Formula: Fe++Ge(OH)6
Help on Composition: Composition: Molecular Weight = 230.50 gm
   Iron       24.23 %  Fe   31.17 % FeO
   Germanium  31.50 %  Ge   45.38 % GeO2
   Hydrogen    2.62 %  H    23.45 % H2O
   Oxygen     41.65 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Fe2+Ge(OH)6
Help on Environment: Environment: Secondary mineral formed in an oxidized zone of a germanium-rich dolostone-hosted hydrothermal polymetallic ore deposit.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1958
Help on Locality: Locality: Tsumeb, Namibia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Charles E. Stott (1896-1978), geologist and formerly General Director of the Tsumeb mine, Tsumeb, Namibia.
Help on Name Pronunciation: Name Pronunciation: Stottite Say STOTTITE
Help on Synonym: Synonym: ICSD 202596
  PDF 11-161
 

Stottite Image

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Stottite   Brunogeierite

Comments: Brownish gray, cubic (tetartoidal) brunogeierite crystals with earthy gray stottite and zincian siderite matrix.
Location: Tsumeb, Namibia. Scale: Cabinent Size.
© William Pinch

Stottite Crystallography
Help on Axial Ratios: Axial Ratios: a:c = 1:0.98604
Help on Cell Dimensions: Cell Dimensions: a = 7.594, c = 7.488, Z = 4; V = 431.82 Den(Calc)= 3.55
Help on Crystal System: Crystal System: Tetragonal - DipyramidalH-M Symbol (4/m) Space Group: P 41/n
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.767(1), 2.655(0.8), 1.687(0.7),
Click Here for Large Stottite Structure Window Crystal Structure:

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drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
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Ross C R , Bernstein L R , Waychunas G A , American Mineralogist , 73 (1988) p.657-661, Crystal-structure refinement of stottite, FeGe(OH)6

 

Physical Properties of Stottite

Help on Cleavage: Cleavage: {100} Good, {010} Good, {001} Distinct
Help on Color: Color: Brown, Colorless, Green.
Help on Density: Density: 3.596 - 3.61, Average = 3.6
Help on Diaphaneity: Diaphaneity: Transparent to Translucent
Help on Hardness: Hardness: 4.5 - Between Fluorite and Apatite
Help on Luster: Luster: Greasy (Oily)
Help on Streak: Streak: gray white
 

Optical Properties of Stottite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.05 (Good) - where the CI = (1-KPDmeas/KC)
CI calc= 0.036 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2065,KPDmeas= 0.2034,KC= 0.2141
Ncalc = 1.76 - 1.77
Help on Optical Data: Optical Data: Uniaxial (-), e=1.728, w=1.738, bire=0.0100.
 

Calculated Properties of Stottite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.45 gm/cc
note: Specific Gravity of Stottite =3.55 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.02
Boson Index = 0.98
Help on Photoelectric: Photoelectric: PEStottite = 26.12 barns/electron
U=PEStottite x rElectron Density= 90.11 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Stottite is Not Radioactive
 

Stottite Classification
Help on Dana Class: Dana Class: 06.03.07.01 (06)Hydroxides and Oxides Containing Hydroxyl
  (06.03)with (OH)3 or (OH)6 groups
  (06.03.07)Wickmanite group (Tetragonal: P42/n)
 
06.03.07.01 Stottite FeGe(OH)6 P 41/n 4/m
 
06.03.07.02 Tetrawickmanite MnSn(OH)6 P 41/n 4/m
 
06.03.07.03 Jeanbandyite (Fe,Mn)Sn(OH)6 P 41/n 4/m
 
06.03.07.04 Mopungite NaSb(OH)6 P 41/n 4/m
Help on Strunz Class: Strunz Class: 04.FC.15 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate
  04.F - Hydroxides (without V or U)
  04.FC -Hydroxides with OH, without H2O; corner-sharing octahedra
 
04.FC.15 Jeanbandyite (Fe,Mn)Sn(OH)6 P 41/n 4/m
 
04.FC.15 Mopungite NaSb(OH)6 P 41/n 4/m
 
04.FC.15 Stottite FeGe(OH)6 P 41/n 4/m
 
04.FC.15 Tetrawickmanite MnSn(OH)6 P 41/n 4/m
 

Other Stottite Information
Help on References: References: NAME( AntBidBlaNic3) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Stottite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - Google Images
6 - Google Scholar
7 - Handbook of Mineralogy (MinSocAm)
8 - Handbook of Mineralogy (UofA)
9 - MinDAT
10 - MinMax(Deutsch)
11 - MinMax(English)
12 - Mineralienatlas (Deutsch)
13 - QUT Mineral Atlas
14 - Ruff.Info
15 - WWW-MINCRYST

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

Stottite

Fe++Ge(OH)6
Dana No: 06.03.07.01 Strunz No: 04.FC.15
Locality:

 

Notes: