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Pyrophanite

Pictures (21 Images total)

Pyrophanit
Views (Image: 1252485149): 1778, 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
Locality: Big Rock Quarry (3M Quarry) / Granite-Mountain-Komplex / Sweet Home / Pulaski Co. / Arkansas / USA
Pyrophanit-Ilmenit-Reihe
Views (Image: 1179604895): 1744
Pyrophanit-Ilmenit-Reihe

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

Copyright: Stephan Wolfsried
Contribution: Hg 2007-05-19
Locality: Laacher See / Ahrweiler, Landkreis / Rheinland-Pfalz / Deutschland
Pyrophanit
Views (Image: 1272012332): 1469
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
Locality: Grotta d'Oggi / San Piero in Campo / Campo nell'Elba / Elba, Insel / Livorno, Provinz / Toskana (Toscana) / Italien
Pyrophanit
Views (Image: 1275217327): 562
Pyrophanit

Kristallgröße: 0,6 mm, Fundort: Gang Rosina, San Piero in Campo, Campo nell'Elba, Insel Elba, Livorno

Collection: Domenico Preite
Copyright: Enrico Bonacina
Contribution: thdun5 2010-05-30
Locality: Gang Rosina (Filone Rosina) / San Piero in Campo / Campo nell'Elba / Elba, Insel / Livorno, Provinz / Toskana (Toscana) / Italien
Pyrophanit
Views (Image: 1352041743): 889
Pyrophanit (SNr: A017266)

Oktaedrischer mattschwarzer Kristall, BB < 1 mm. Fundort: In den Dellen-Laacher See-Mendig-Eifel-Rheinland Pfalz.

Collection: Lithothek der Münchener Micromounter
Copyright: Hannes Osterhammer
Contribution: Münchener Micromounter 2012-11-04
Locality: In den Dellen (Grube Zieglowski) / Mendig, Verbandsgemeinde / Mayen-Koblenz-Kreis / Rheinland-Pfalz / Deutschland
Pyrophanit
Views (Image: 1252485110): 1004
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
Locality: Big Rock Quarry (3M Quarry) / Granite-Mountain-Komplex / Sweet Home / Pulaski Co. / Arkansas / USA

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]

Corundum

Al2O3

trigonal : 3m : R3c

4.CB.05

Ilmenite

Fe2+TiO3

trigonal : 3 : R3

4.CB.05

'Romanite'

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

4.CB.05

Brizziite

NaSbO3

trigonal : 3 : R3

4.CB.05

Eskolaite

Cr2O3

trigonal : 3m : R3c

4.CB.05

Hematite

Fe2O3

trigonal : 3m : R3c

4.CB.05

Tistarite

Ti2O3

trigonal : 3m : R3c

4.CB.05

Akimotoite

(Mg,Fe2+)SiO3

trigonal : 3 : R3

4.CB.05

Geikielite

MgTiO3

trigonal : 3 : R3

4.CB.05

Karelianite

V2O3

trigonal : 3m : R3c

4.CB.05

Pyrophanite

MnTiO3

trigonal : 3 : R3

4.CB.05

Ecandrewsite

(Zn,Fe2+,Mn2+)TiO3

trigonal : 3 : R3

4.CB.05

Thalliomelane

TlMn4+7.5Cu2+0.5O16

tetragonal : 4/m : I4/m

4.CB.05

Melanostibite

Mn(Sb5+,Fe3+)O3

trigonal : 3 : R3

4.CB.05

'Auroantimonate'

AuSbO3

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 : Pbma

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

Alternative Name

Pyrophanita

CNMNC symbol

Symbol

Pph

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

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