'._('einklappen').'
 

Petscheckite

Pictures (1 Images total)

Petscheckit
Views (Image: 1271685492): 1102
Petscheckit

Bildbreite: 8 mm, Fundort: Tiltvika-Pegmatit, Hamarøy, Nordland, Norwegen

Copyright: Luigi Chiappino
Contribution: thdun5 2010-04-19
Locality: Tiltvika-Pegmatit / Hamarøy / Nordland, Provinz / Norwegen

Collectors Summary

Color schwarz
Streak color braunschwarz
Lustre Matallglanz
Hardness (Mohs) 5
Crystal System trigonal, P31m

Chemism

Chem­ical formula

U4+Fe2+Nb2O8

Chem­ical com­po­si­tion

Eisen, Niob, Sauerstoff, Uran

Unit weight: 607.682317 u; Number of atoms in the formula: 12

Info

Empirical formula:

UFeNb2O8

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Oxygen

O

21.06

8

66.67

15.9994300

127.9954400

Iron

Fe

9.19

1

8.33

55.8452000

55.8452000

Niobium

Nb

30.58

2

16.67

92.9063820

185.8127640

Uranium

U

39.17

1

8.33

238.0289130

238.0289130

Strunz 9th edi­tion incl. updates

4.DH.35

4: Oxide, Hydroxide (Oxide, Hydroxide, V[5,6]-Vanadate, Arsenite, Antimonite, Bismutite, Sulfite, Selenite, Tellurite, Iodate)
D: Metall: Sauerstoff = 1:2 und vergleichbare
H: Mit großen (± mittelgroßen) [Kationen]; Lagen kantenverknüpfter Oktaeder
35:Petscheckit-Gruppe

Lapis Clas­sifica­tion

IV/D.23-010

IV: OXIDE
D: Oxide mit Verhältnis Metall : Sauerstoff = 1:2 (MO2 und verwandte Verbindungen)

Clas­sifica­tion by Hölzel

4.DJ.560

4: OXIDES
D: Dioxides
J: Titanates, Niobates and Tantalates, C large, V medium ò 2
5: Other Niobates, Tantalates

Dana 8th edi­tion

08.01.09.02

08: Multiple Oxides with Nb, Ta, and Ti
01: Multiple Oxides with Nb, Ta, and Ti where A BO4

IMA sta­tus

Anerkannt von der CNMNC

Min­eral sta­tus

anerkanntes Mineral

Optical Properties

Color

schwarz

Streak color

braunschwarz

Change in color

weiß mit orangen Farbton in reflektiertem Licht, mit rotbraunen internen Reflektionen

Diaphane­ity (Trans­parency)

opak

Lus­tre

Matallglanz

Anisotropism

isotropisch

Crystallography

Crystal Sys­tem

trigonal

Class (H-M)

3m

Space Group number

162

Space Group

P31m

Cell param­e­ters a (Å)

6.42

Cell param­e­ters b (Å)

-

Cell param­e­ters c (Å)

4.02

Cell param­e­ters a/b or c/a

0.626

Cell param­e­ters c/b

-

Z

1

Volumne (ų)

143.492

X-Ray Pow­der Diffrac­tion

4.02(100),
3.21(100),
2.51(80),
2.01(20),
1.861(20),
1.850(30),
1.697(40),
1.492(20)

XRD chart Petscheckite

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

Crystals 3D

Open larger view

Physical Properties

Hard­ness (Mohs)

5

VHN (Hard­ness Vick­ers)

390 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

7.0 (gemessen)

7.032 ( ρ calc. Mineralienatlas )

Radioac­tiv­ity

das Mineral ist radioaktiv da Uran-haltig

Preface

Name from

Eckehard Petsch (geboren 1939) aus Idar-Oberstein, Deutschland; Er prospektierte ausgiebig in Madagaskar

Author (Name, Year)

Mücke & Strunz, 1978

Safety Instructions

Industrial chemicals are often present in powder form and therefore often contain much higher dangers than natural, crystalline substances. These hazard statements refer to the classification of industrially used chemical compounds that may also occur in this natural mineral. The hazard classification makes no claim to completeness.




Safety classes: Ionizing radiation: Radioaktiv

References

American Mineralogist 63 (1978), 941

Tomašić, N., Raade, G. & Bermanec, V. - REE-bearing petscheckite from Tiltvika, Nordland, Norway, and its heating products. Neues Jahrbuch für Mineralogie Monatshefte 2004 (4), 163-175

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

Liandratite

U6+(Nb,Ta)2O8

trigonal : 3m : P31m

4.DH.35

Petscheckite

U4+Fe2+Nb2O8

trigonal : 3m : P31m

4.DH.35

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

Petscheckite

U4+Fe2+Nb2O8

trigonal : 3m : P31m

IV/D.23-010

Liandratite

U6+(Nb,Ta)2O8

trigonal : 3m : P31m

IV/D.23-020

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

Irtyshite

Na2(Ta,Nb)4O11

hexagonal : 6/m, 6 : P63/m, P63

4.DJ.500

Cesplumtantite

(Cs,Na)2(Pb,Sb3+)3Ta8O24

4.DJ.510

'Ungursaite'

Ca(Ta,Nb)4O11

hexagonal : 6, 6/m : P63, P63/m

4.DJ.530

Calciotantite

CaTa4O11

hexagonal : 622 : P6322

4.DJ.540

Petscheckite

U4+Fe2+Nb2O8

trigonal : 3m : P31m

4.DJ.560

Liandratite

U6+(Nb,Ta)2O8

trigonal : 3m : P31m

4.DJ.570

Murataite-(Y)

(Y,Na)6(Zn,Fe3+)5(Ti,Nb)12(O,F,OH)43

kubisch : 43m : F43m

4.DJ.580

Changbaiite

PbNb2O6

trigonal : 3m : R3m

4.DJ.590

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

Fergusonite-(Y)

YNbO4

tetragonal : 4/m : I41/a

08.01.01.01

Formanite-(Y)

YTaO4

monoklin : 2/m : P2/a

08.01.01.02

'Fergusonite-(Ce)'

CeNbO4

tetragonal : 4/m : I41/a

08.01.01.03

Yttrotantalite-(Y)

(Y,U,Fe2+)(Ta,Nb)(O,OH)4

08.01.03.01

'Yttrocolumbite-(Y)'

(Y,U,Fe2+)(Nb,Ta)O4

08.01.03.02

Ishikawaite

(U,Fe,Y)NbO4

08.01.04.01

Loranskite-(Y)

(Y,Ce,Ca)ZrTaO6

08.01.05.01

Stibiocolumbite

SbNbO4

orthorhombisch : mm2 : Pc21n

08.01.06.01

Stibiotantalite

Sb3+TaO4

orthorhombisch : mm2 : Pc21n

08.01.06.02

Bismutotantalite

Bi(Ta,Nb)O4

orthorhombisch : mmm : Pcnn

08.01.06.03

Bismutocolumbite

Bi(Nb,Ta)O4

orthorhombisch : mmm : Pcnn

08.01.06.04

Alumotantite

AlTaO4

orthorhombisch : mmm : Pbcn

08.01.07.01

Wodginite

Mn2+Sn4+Ta2O8

monoklin : 2/m : C2/c

08.01.08.01

Ferrowodginite

(Fe2+,Mn2+)(Sn,Ti,Fe3+,Ta)(Ta,Nb)2O8

monoklin : 2/m : C2/c

08.01.08.02

Titanowodginite

(Mn2+,Fe2+)(Ti,Sn,Ta,Sc)(Ta,Nb)2O8

monoklin : 2/m : C2/c

08.01.08.03

Lithiowodginite

(Li,Mn,Fe)(Ta,Nb,Sn)3O8

monoklin : 2/m : C2/c

08.01.08.04

Ferrotitanowodginite

(Fe2+,Mn2+)(Ti,Sn4+,Ta,Fe3+)(Ta,Nb)2O8

monoklin : 2/m : C2/c

08.01.08.05

Liandratite

U6+(Nb,Ta)2O8

trigonal : 3m : P31m

08.01.09.01

Petscheckite

U4+Fe2+Nb2O8

trigonal : 3m : P31m

08.01.09.02

Other languages

German

Petscheckit

Spanish

Petscheckita

French

Petscheckite

English

Petscheckite

Japanese

ベチェック石

IMA Number

IMA 1975-038

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

German pages

DeWikiPedia - search for: Petscheckit
Google-Bilder-Suche - search for: Petscheckit
Mineralogisch-Petrographisches-Institut Hamburg - search for: Petscheckit

English pages

Mindat - search for: Petscheckite
Webmineral - search for:Petscheckite
Handbook-of-Mineralogy - search for: Petscheckite
RRUFF - Raman, XRD and other mineral data - search for: Petscheckite
RRUFF - References and PDF downloads - search for: Petscheckite
American-Mineralogist-Crystal-Structure-Database - search for: Petscheckite
Athena - search for: Petscheckite

Mineral Dealer

German pages

hausen - Mineralgroßhandel - search for: Petscheckit
Crystal-Treasure.com - search for: Petscheckit
Bosse - search for: Petscheckit

Locations with GPS information