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Pyrophanite

Pictures (18 Images total)

Pyrophanit
Views (Image: 1252485149): 1295, Rating: 8.75
Pyrophanit

Bildbreite: 1,5 mm; Fundort: Big Rock Quarry (3M Quarry), Granite-Mountain-Komplex, Sweet Home, Pulaski Co., Arkansas, USA

Copyright: Stephan Wolfsried
Contribution: Hg 2009-09-09
Pyrophanit-Ilmenit-Reihe
Views (Image: 1179604895): 1315
Pyrophanit-Ilmenit-Reihe

Bildbreite: 3 mm; Fundort: Laacher See-Vulkangebiet, Eifel, Deutschland

Copyright: Stephan Wolfsried
Contribution: Hg 2007-05-19
Pyrophanit
Views (Image: 1272012332): 995
Pyrophanit

Größe: 1,01 mm; Fundort: Grotta d'Oggi, San Piero in Campo, Campo nell'Elba,Insel Elba, Livorno, Toskana (Toscana), Italien

Copyright: Matteo Chinellato
Contribution: Hg 2010-04-23
Pyrophanit
Views (Image: 1252485110): 728
Pyrophanit

Bildbreite: 1 mm; Fundort: Big Rock Quarry (3M Quarry), Granite-Mountain-Komplex, Sweet Home, Pulaski Co., Arkansas, USA

Copyright: Stephan Wolfsried
Contribution: Hg 2009-09-09
Pyrophanit (schwarze Leisten) mit rotem Katapleit in Feldspatmatrix
Views (Image: 1266745230): 880
Pyrophanit (schwarze Leisten) mit rotem Katapleit in Feldspatmatrix

Stufengröße 40 mm; Fundort: Bratthagen, Lagendalen, Vestfold, Norwegen

Collection: giantcrystal
Copyright: slugslayer
Contribution: slugslayer 2010-02-21
Pyrophanit
Views (Image: 1252485028): 387
Pyrophanit

Bildbreite: 1 mm; Fundort: Big Rock Quarry (3M Quarry), Granite-Mountain-Komplex, Sweet Home, Pulaski Co., Arkansas, USA

Copyright: Stephan Wolfsried
Contribution: Hg 2009-09-09

Collectors Summary

Color Blood rot, grün gelb, dunkelrot
Streak color ochre gelb
Hardness (Mohs) 5.5
Solubility + heiße HCl
Crystal System trigonal, R3

Chemism

Chemical formula

MnTiO3

Additional chem. information

Lt. Strunz 9. Edition: auch zugehörig zur Ilmenit Serie

Chemical composition

Mangan, Titan, Sauerstoff

Unit weight: 150.8034399 u; Number of atoms in the formula: 5

Info

Empirical formula:

MnTiO3

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Oxygen

O

31.83

3

60.00

15.9994300

47.9982900

Titanium

Ti

31.74

1

20.00

47.8671000

47.8671000

Manganese

Mn

36.43

1

20.00

54.9380499

54.9380499

Analysis wt%

TiO2 : 50.49, MnO : 46.92, Fe2O3 : 1.16, SiO2 : 1.58, Sb2O3 : 0.48 (Ref: Dana, 7th ed. 1)

Strunz 9th edition incl. updates

4.CB.05

4: Oxide, Hydroxide (Oxide, Hydroxide, V[5,6]-Vanadate, Arsenite, Antimonite, Bismutite, Sulfite, Selenite, Tellurite, Iodate)
C: Metall: Sauerstoff = 2: 3,3: 5, und vergleichbare
B: Mit mittelgroßen Kationen
05:Korund-Gruppe

Lapis Classification

IV/C.05-030

IV: OXIDE
C: Oxide mit Verhältnis Metall : Sauerstoff = 2:3 (M2O3 und ver-wandte Verbindungen)
5: Ilmenit-Gruppe

Classification by Hölzel

4.CD.130

4: OXIDES
C: R2O3 Sesquioxides
D: Ilmenite-Group

Dana 8th edition

04.03.05.03

04: Oxide Minerals
03: Simple Oxides with a cation charge of 3+ (A+++2 O3)
05: Ilmenite Group

IMA status

Erstbeschreibung vor CNMNC-Gründung (1959), als Mineral meist anerkannt

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

Ilmenite-Pyrophanite Series
Ilmenite group

Optical Properties

Color

Blood rot, grün gelb, dunkelrot

Streak color

ochre gelb

Diaphaneity (Transparency)

teilweise durchscheinend bis opak

max. Birefringence

0.27

Birefringence chart\! Pyrophanite title=Birefringence chart Pyrophanite

Michel-Levy Color Chart viewed according to the maximum birefringence (at 30μm). Mineral color is not taken into account. Click on the image to enlarge or change thickness.

RI value α / ω / n

2.481

RI value γ / ε

2.21

Ri mean

2.391

2V angle

Uniaxial (-)

Crystallography

Crystal System

trigonal

Class (H-M)

3

Space Group number

148

Space Group

R3

Cell parameters a (Å)

5.140

Cell parameters b (Å)

-

Cell parameters c (Å)

14.290

Cell parameters a/b or c/a

2.780

Cell parameters c/b

-

Z

6

Volumne (ų)

326.956

X-Ray Powder Diffraction

3.776(20),
2.785(100),
2.569(70),
2.262(30),
1.889(40),
1.747(40),
1.522(30),
1.484(30)

XRD chart Pyrophanite

Calculated from d-spacing and intensity at 0.1541838 nm (Cu)

Crystals 3D

Open larger view

Crystal Structure 3D

Open larger view

Physical Properties

Hardness (Mohs)

5.5

VHN (Hardness Vickers)

511 (50g)

Density (g/cm³)

4.5 - 4.53 / Durchschnittlich = 4.51

4.595 ( ρ calc. Mineralienatlas )

Instability

+ heiße HCl

Preface

Author (Name, Year)

Hamberg, 1890

References

Handbook of Mineralogy (Anthony et al.), 3 (1997), 460

IMA group assignments

Related minerals "Strunz Classification" (9. Edition) [Mineral | Chemical formula | Crystal system : Class (H-M) : Space Group | Indenture number]

Akimotoite

(Mg,Fe2+)SiO3

trigonal : 3 : R3

4.CB.05

'Auroantimonate'

AuSbO3

4.CB.05

Brizziite

NaSbO3

trigonal : 3 : R3

4.CB.05

Corundum

Al2O3

trigonal : 3m : R3c

4.CB.05

Ecandrewsite

(Zn,Fe2+,Mn2+)TiO3

trigonal : 3 : R3

4.CB.05

Eskolaite

Cr2O3

trigonal : 3m : R3c

4.CB.05

Geikielite

MgTiO3

trigonal : 3 : R3

4.CB.05

Hematite

Fe2O3

trigonal : 3m : R3c

4.CB.05

Ilmenite

Fe2+TiO3

trigonal : 3 : R3

4.CB.05

Karelianite

V2O3

trigonal : 3m : R3c

4.CB.05

Melanostibite

Mn(Sb5+,Fe3+)O3

trigonal : 3 : R3

4.CB.05

Pyrophanite

MnTiO3

trigonal : 3 : R3

4.CB.05

'Romanite'

(Fe2+,U,Pb)2(Ti,Fe3+)O4

4.CB.05

Tistarite

Ti2O3

trigonal : 3m : R3c

4.CB.05

Related minerals "Lapis Classification" [Mineral | Chemical formula | Crystal system : Class (H-M) : Space Group | Indenture number]

Akimotoite

(Mg,Fe2+)SiO3

trigonal : 3 : R3

IV/C.05-005

Geikielite

MgTiO3

trigonal : 3 : R3

IV/C.05-010

Ilmenite

Fe2+TiO3

trigonal : 3 : R3

IV/C.05-020

Pyrophanite

MnTiO3

trigonal : 3 : R3

IV/C.05-030

Ecandrewsite

(Zn,Fe2+,Mn2+)TiO3

trigonal : 3 : R3

IV/C.05-040

Melanostibite

Mn(Sb5+,Fe3+)O3

trigonal : 3 : R3

IV/C.05-050

Brizziite

NaSbO3

trigonal : 3 : R3

IV/C.05-060

Related minerals "Hoelzel Classification" [Mineral | Chemical formula : Crystal system : Class (H-M) | Space Group | Indenture number]

Geikielite

MgTiO3

trigonal : 3 : R3

4.CD.100

Ecandrewsite

(Zn,Fe2+,Mn2+)TiO3

trigonal : 3 : R3

4.CD.110

Ilmenite

Fe2+TiO3

trigonal : 3 : R3

4.CD.120

Pyrophanite

MnTiO3

trigonal : 3 : R3

4.CD.130

Brizziite

NaSbO3

trigonal : 3 : R3

4.CD.150

Melanostibite

Mn(Sb5+,Fe3+)O3

trigonal : 3 : R3

4.CD.160

Filipstadite

(Mn2+,Mg)2(Fe3+0.5Sb5+0.5)O4

kubisch : m3m : Fd3m

4.CD.170

Tegengrenite

(Mg,Mn2+)2(Sb5+,Mn3+)O4

trigonal : 3, 3 : R3, R3

4.CD.180

Manganostibite

(Mn2+,Fe2+)7(SbO4)(AsO4,SiO4)O4

orthorhombisch : mmm : Ibmm

4.CD.190

Related minerals "Dana 8. Classification" [Mineral | Chemical formula : Crystal system : Class (H-M) | Space Group | Indenture number]

Corundum

Al2O3

trigonal : 3m : R3c

04.03.01.01

Hematite

Fe2O3

trigonal : 3m : R3c

04.03.01.02

Eskolaite

Cr2O3

trigonal : 3m : R3c

04.03.01.03

Karelianite

V2O3

trigonal : 3m : R3c

04.03.01.04

Akdalaite

(Al2O3)5·H2O

hexagonal : 6mm : P63mc

04.03.02.01

Ferrihydrite

Fe3+10O14(OH)2

hexagonal : 6mm : P63mc

04.03.02.02

Perovskite

CaTiO3

orthorhombisch : mmm : Pbnm

04.03.03.01

Latrappite

(Ca,Na)(Nb,Ti,Fe)O3

orthorhombisch : mmm : Pbnm

04.03.03.02

Lueshite

NaNbO3

orthorhombisch : mmm : Pmmn

04.03.03.04

Tausonite

SrTiO3

kubisch : m3m : Pm3m

04.03.03.05

Isolueshite

Na(Nb,Ti)O3

kubisch : m3m : Pm3m

04.03.03.06

Ilmenite

Fe2+TiO3

trigonal : 3 : R3

04.03.05.01

Geikielite

MgTiO3

trigonal : 3 : R3

04.03.05.02

Pyrophanite

MnTiO3

trigonal : 3 : R3

04.03.05.03

Ecandrewsite

(Zn,Fe2+,Mn2+)TiO3

trigonal : 3 : R3

04.03.05.04

Melanostibite

Mn(Sb5+,Fe3+)O3

trigonal : 3 : R3

04.03.05.05

Brizziite

NaSbO3

trigonal : 3 : R3

04.03.05.06

Akimotoite

(Mg,Fe2+)SiO3

trigonal : 3 : R3

04.03.05.07

Macedonite

PbTiO3

tetragonal : 4mm : P4mm

04.03.06.01

Maghemite

Fe2.67O4

kubisch : 432 : P4132, P4332

04.03.07.01

Bixbyite

(Mn3+,Fe3+)2O3

kubisch : m3 : Ia3

04.03.07.02

Avicennite

Tl2O3

kubisch : m3 : Ia3

04.03.08.01

Arsenolite

As2O3

kubisch : m3m : Fd3m

04.03.09.01

Sénarmontite

Sb2O3

kubisch : m3m : Fd3m

04.03.09.02

Other languages

Spanish

Pirofanita

German

Pyrophanit

English

Pyrophanite

French

Pyrophanite

Russian

Пирофанит

Simplified Chinese

红钛锰矿

Alternative Name

Pyrophanita

Automatic Links to external internet sources (Responsibility is with the operator)

German pages

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English pages

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