Pyrophanite Mineral Data (original) (raw)

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

Click Here for Larger Pyrophanite Image in a New Browser Window Images:

Click Here for Larger Pyrophanite Image 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 - RhombohedralH-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),

Click Here for Large Pyrophanite Structure Window Crystal Structure:

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Help on Above

| | Mitchell R H , Liferovich R P , The Canadian Mineralogist , 42 (2004) p.1871-1880, The pyrophanite-ecandrewsite solid-solution: crystal structures, of the Mn1-xZnxSiO3 series (0.1 <= x <= 0.8), Sample: x = .1, ilmenite structure View Additional jPOWD Structure files for Pyrophanite [1] [2] [3] [4] [5] | | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |

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 R 2 ∑ 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

RelativeIntensity 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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Ask about Pyrophanite here :
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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: