Mineralogy Database

Pyrophanite Mineral Data

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General Pyrophanite Information

Help on Chemical  Formula: Chemical Formula: MnTiO3
Help on Composition: Composition: Molecular Weight = 150.82 gm
   Titanium   31.75 %  Ti   52.96 % TiO2
   Manganese  36.43 %  Mn   47.04 % MnO
   Oxygen     31.83 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Mn2+TiO3
Help on Environment: Environment: Principally in metamorphosed manganese deposits, less commonly as an accessory mineral in granite, amphibolite, and serpentinites.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1890
Help on Locality: Locality: Jartstig mine, Pajsberg, Hear Persberg, Vermland, Sweden. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: From the Greek pyr - "fire" and fanos - "shining."
Help on Name Pronunciation: Name Pronunciation: Pyrophanite + Pronunciation Say PYROPHANITE
Help on Synonym: Synonym: ICSD 6006
  PDF 29-902
 

Pyrophanite Image

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  Pyrophanite

Comments: Red-brown platy pyrophanite crystals with deep red internal hints, associated with barite.
Location: Harstigen Mine, Pajsberg, Filipstad, Värmland, Sweden. Scale: See Image.
© Rruff Database

Pyrophanite Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:2.78177
Help on Cell Dimensions: Cell Dimensions: a = 5.137, c = 14.29, Z = 6; V = 326.57 Den(Calc)= 4.60
Help on Crystal System: Crystal System: Trigonal - Rhombohedral H-M Symbol ( 3) Space Group: R 3
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.78(1), 2.57(0.9), 1.745(0.8),
 

Physical Properties of Pyrophanite

Help on Cleavage: Cleavage: {0221} Perfect
Help on Color: Color: Blood red, Green yellow, Dark red.
Help on Density: Density: 4.5 - 4.53, Average = 4.51
Help on Diaphaneity: Diaphaneity: Subtranslucent to opaque
Help on Fracture: Fracture: Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments.
Help on Habit: Habit: Platy - Sheet forms (e.g. micas).
Help on Habit: Habit: Scaly - Morphology like fish scales.
Help on Hardness: Hardness: 5 - Apatite
Help on Luster: Luster: Sub Metallic
Help on Streak: Streak: ochre yellow
 

Optical Properties of Pyrophanite

Help on Dichroism (e): Dichroism (e): orange.
Help on Dichroism (w): Dichroism (w): orange.
Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.01 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.028 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2924,KPDmeas= 0.2979,KC= 0.3008
Ncalc = 2.35 - 2.38
Help on Optical Data: Optical Data: Uniaxial (-), e=2.21, w=2.48, bire=0.2700.
Help on Reflectivity Reflectivity
Standardized Intensity (100%) Reflection Spectra of Pyrophanite in Air
λ R1 R2  ∑ R1(λ)   ∑ R2(λ) 
 400 nm   23.50   19.90 
   
 420 nm   22.70   19.60 
 440 nm   21.80   18.90 
 460 nm   21.10   18.20 
 480 nm   20.40   17.60 
 500 nm   19.90   17.10 
 520 nm   19.40   16.70 
 540 nm   19.00   16.30 
 560 nm   18.80   16.10 
 580 nm   18.50   15.90 
 600 nm   18.30   15.70 
 620 nm   18.20   15.60 
 640 nm   18.00   15.50 
 660 nm   17.80   15.40 
 680 nm   17.80   15.30 
 700 nm   17.60   15.20 
Calculated Relative Intensity Colors of Pyrophanite in Air
Relative
Intensity
   0%   60% 100% 120% 180% 240% 300% 360% 420% 480% 540% 550%
R1                        
R2                        
 

Calculated Properties of Pyrophanite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=4.25 gm/cc
note: Specific Gravity of Pyrophanite =4.52 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.04
Boson Index = 0.96
Help on Photoelectric: Photoelectric: PEPyrophanite = 14.91 barns/electron
U=PEPyrophanite x rElectron Density= 63.38 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Pyrophanite is Not Radioactive
 

Pyrophanite Classification

Help on  Dana Class: Dana Class: 04.03.05.03 (04)Simple Oxides
  (04.03)with a cation charge of 3+ (A+++2 O3)
  (04.03.05)Ilmenite Group
 
04.03.05.01 Ilmenite FeTiO3 R 3 3
 
04.03.05.02 Geikielite MgTiO3 R 3 3
 
04.03.05.03 Pyrophanite MnTiO3 R 3 3
 
04.03.05.04 Ecandrewsite (Zn,Fe,Mn)TiO3 R 3 3
 
04.03.05.05 Melanostibite Mn(Sb,Fe)O3 R 3 3
 
04.03.05.06 Brizziite-III NaSbO3 R 3 3
 
04.03.05.07 Akimotoite! (Mg,Fe)SiO3 R 3 3
Help on  Strunz Class: Strunz Class: 04.CB.05 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate
  04.C - Metal:Oxygen = 2:3, 3:5, and Similar
  04.CB -With medium-sized cations
 
04.CB.05 Auroantimonate* AuSbO3 Ortho ? Ortho
 
04.CB.05 Geikielite MgTiO3 R 3 3
 
04.CB.05 Brizziite-III NaSbO3 R 3 3
 
04.CB.05 Brizziite-VII NaSbO3 R 3 3
 
04.CB.05 Ecandrewsite (Zn,Fe,Mn)TiO3 R 3 3
 
04.CB.05 Corundum Al2O3 R 3c 3 2/m
 
04.CB.05 Eskolaite Cr2O3 R 3c 3 2/m
 
04.CB.05 Hematite Fe2O3 R 3c 3 2/m
 
04.CB.05 Karelianite V2O3 R 3c 3 2/m
 
04.CB.05 Ilmenite FeTiO3 R 3 3
 
04.CB.05 Melanostibite Mn(Sb,Fe)O3 R 3 3
 
04.CB.05 Pyrophanite MnTiO3 R 3 3
 
04.CB.05 Romanite* (Fe,U,Pb)2(Ti,Fe)O4 Trig ? Trig
 
04.CB.05 Tistarite! Ti2O3 R 3c 3 2/m
 

Other Pyrophanite Information

Help on References: References: NAME( Duda&Rejl90) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic3)
Help on See Also: See Also: Links to other databases for Pyrophanite :
1 - Alkali-Nuts(English)
2 - Alkali-Nuts(Francais)
3 - Am. Min. Crystal Structure Database
4 - Athena
5 - EUROmin Project
6 - Ecole des Mines de Paris
7 - Franklin Minerals(Dunn)
8 - GeoScienceWorld
9 - Google Images
10 - Google Scholar
11 - Handbook of Mineralogy (MinSocAm)
12 - Handbook of Mineralogy (UofA)
13 - MinDAT
14 - Mineralienatlas (Deutsch)
15 - Online Mineral Museum
16 - QUT Mineral Atlas
17 - Ruff.Info
18 - University of Colorado - Mineral Structure Data
19 - WWW-MINCRYST

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

Pyrophanite

MnTiO3
Dana No: 04.03.05.03 Strunz No: 04.CB.05
Locality:

 

Notes:

 

 
   
 


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