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Tegengrenite Mineral Data

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General Tegengrenite Information

Help on Chemical  Formula: Chemical Formula: (Mg,Mn++)2Sb+++++0.5(Mn+++,Si,Ti)0.5O4
Help on Composition: Composition: Molecular Weight = 219.12 gm
   Magnesium  13.31 %  Mg   22.07 % MgO
   Titanium    0.87 %  Ti    1.46 % TiO2
   Manganese  25.07 %  Mn   25.90 % MnO /  7.21 % Mn2O3
   Zinc        2.98 %  Zn    3.71 % ZnO
   Silicon     0.77 %  Si    1.65 % SiO2
   Antimony   27.78 %  Sb   36.91 % Sb2O5
   Oxygen     29.21 %  O
             ______        ______ 
             100.00 %       98.90 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Mg1.2Mn2+0.8Zn0.1Sb0.5Mn3+0.2Si0.06Ti0.04O4
Help on Environment: Environment: In a manganese-iron deposit in marble. Related to the spinal group
Help on IMA Status: IMA Status: Approved IMA 1999 (Dana # Added)
Help on Locality: Locality: Jokobsberg Fe-Mn deposit, Varmland, Sweden. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Felix Tegengren (1884-1980), a renowned Finlandic-Swedish economic geologist who wrote about the ore deposits of Sweden and China.
Help on Synonym: Synonym: IMA1999-002

Tegengrenite Image

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Comments: Red, pseudo-octahedral crystal of tegengrenite in quartz.
Location: Jakobsberg, Nordmark, Filipstad, Värmland, Sweden. Scale: Picture size 0.8 mm.
© Thomas Witzke / Abraxas-Verlag

Tegengrenite Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:0.92294
Help on Cell Dimensions: Cell Dimensions: a = 16.196, c = 14.948, Z = 42; V = 3,395.70 Den(Calc)= 4.50
Help on Crystal System: Crystal System: Trigonal Space Group: R 3 or R 3-
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.608(1)(241,143,125), 3.052(0.33)(140,214), 1.6652(0.3)(363,075),1.5273(0.29)(428), 2.162(0.28)(244), 1.5313(0.26)(820), 4.98(0.2)(211,003),
Help on Forms: Forms:

Dbl Clk - Start-Stop Rotation
RMB - Cycle Display Modes
Drag1 - Manipulate Crystal
Drag2 - Resize

S - Stereo
I - Indicies
<space> - Start-Stop Rotation
F - Fit to Screen
M - Menu

Help on Above

Forms: ( 2 0 1) ( 0 0 1)

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Physical Properties of Tegengrenite

Help on Cleavage: Cleavage: None
Help on Color: Color: Dark red.
Help on Diaphaneity: Diaphaneity: Translucent
Help on Fracture: Fracture: Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz).
Help on Habit: Habit: Euhedral Crystals - Occurs as well-formed crystals showing good external form.
Help on Habit: Habit: Subhedral Crystals - Occurs as crystals which tend to exhibit a recognizable crystal shape.
Help on Luster: Luster: Subadamantine

Optical Properties of Tegengrenite

Help on Optical Data: Optical Data: NCalc= 1.85 - from Gladstone-Dale relationship (KC = 0.1884) where Ncalc=Dcalc*KC+1

Calculated Properties of Tegengrenite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=4.17 gm/cc
note: Specific Gravity of Tegengrenite =4.50 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PETegengrenite = 96.81 barns/electron
U=PETegengrenite x rElectron Density= 404.06 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Tegengrenite is Not Radioactive

Tegengrenite Classification

Help on  Dana Class: Dana Class: (07)Multiple Oxides
  (07.02)(A+ B++)2 X4 Spinel group
  (07.02.13)Dana Group Filipstadite (Mn,Mg)4SbFeO8 pseudo ISO 2/m 2/m 2/m Tegengrenite! (Mg,Mn)2Sb0.5(Mn,Si,Ti)0.5O4 R 3 or R 3- Trig
Help on  Strunz Class: Strunz Class: 04.BB.20 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate
  04.B - Metal:Oxygen = 3:4 and similar
  04.BB -With only medium-sized cations
04.BB.20 Tegengrenite! (Mg,Mn)2Sb0.5(Mn,Si,Ti)0.5O4 R 3 or R 3- Trig

Other Tegengrenite Information

Help on References: References: NAME( MinRec, Vol 32, p 419) PHYS. PROP.(MinRec, Vol 32, p 419)
Help on See Also: See Also: Links to other databases for Tegengrenite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - MinDAT
7 - Mineralienatlas (Deutsch)
8 - Online Mineral Museum
9 - QUT Mineral Atlas
10 - Ruff.Info

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Dana No: Strunz No: 04.BB.20





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