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Wolframite

Pictures (143 Images total)

tafeliger schwarzer Wolframit
Views (File:
1575020624
): 2093
tafeliger schwarzer Wolframit
Portugal/Castelo Branco, Distrikt/Covilhã/Panasqueira, BB = 41,5 mm
Copyright: Hannes Osterhammer; Contribution: Münchener Micromounter
Collection: Lithothek der Münchener Micromounter, Collection number: B006975, Donator: Rudolf Berrenrath
Location: Portugal/Castelo Branco, Distrikt/Covilhã/Panasqueira
Mineral: Wolframite
Image: 1575020624
Rating: 10 (votes: 1)
License: Usage for Mineralienatlas project only
tafeliger schwarzer Wolframit (SNr: B006975)

Portugal/Castelo Branco, Distrikt/Covilhã/Panasqueira, BB = 41,5 mm
Collection: Lithothek der Münchener Micromounter
Copyright: Hannes Osterhammer
Contribution: Münchener Micromounter 2019-11-29
Locality: Panasqueira / Covilhã / Castelo Branco, Distrikt / Portugal
Wolframite
Views (File:
1275851999
): 1662
Wolframite
XL, totally finished wolframite crystal, from Llallagua, Rafael Bustillo Province, Potosí Department, Bolivia; Size 48 х 45 х 23 mm
Copyright: pegmatite; Contribution: pegmatite
Collection: pegmatite
Location: Bolivien/Potosi, Departamento/Rafael Bustillo, Provinz/Llallagua
Mineral: Wolframite
Image: 1275851999
Rating: 9 (votes: 1)
License: Usage for Mineralienatlas project only
Wolframite

XL, totally finished wolframite crystal, from Llallagua, Rafael Bustillo Province, Potosí Department, Bolivia; Size 48 х 45 х 23 mm
Collection: pegmatite
Copyright: pegmatite
Contribution: pegmatite 2010-06-06
Locality: Llallagua / Rafael Bustillo, Provinz / Potosi, Departamento / Bolivien
Wolframit in Quarz
Views (File:
1547471282
): 2287
Wolframit in Quarz
Wolframitleisten in Fettquarz. 16 cm breites "Reicherz" aus Pechtelsgrün im Vogtland, Sachsen. Gewicht: 2,3 kg.
Copyright: Jan Hartmann; Contribution: Alcest
Collection: Jan Hartmann
Location: Deutschland/Sachsen/Vogtlandkreis/Lengenfeld/Pechtelsgrün/Wolframitgrube Pechtelsgrün
Mineral: Wolframite
Image: 1547471282
Rating: 9 (votes: 1)
License: Creative Commons - Attribution (CC-BY) V.3.0
Wolframit in Quarz

Wolframitleisten in Fettquarz. 16 cm breites "Reicherz" aus Pechtelsgrün im Vogtland, Sachsen. Gewicht: 2,3 kg.
Collection: Jan Hartmann
Copyright: Jan Hartmann
Contribution: Alcest 2019-01-14
Locality: Wolframitgrube Pechtelsgrün / Pechtelsgrün / Lengenfeld / Vogtlandkreis / Sachsen / Deutschland
Wolframit, Rauchquarz
Views (File:
1585328267
): 1758
Wolframit, Rauchquarz
FO.: Akchatau, Qaraghandy oblysy (Karaganda), Kasachstan / Stufengröße: 4,5 x 3,2 cm
Copyright: Hrouda; Contribution: Hrouda
Collection: Hrouda
Location: Kasachstan/Qaraghandy oblysy (Karaganda)/Akchatau (Aqshatau; Akcatau; Akschatau)
Mineral: Wolframite
Image: 1585328267
Rating: 9 (votes: 1)
License: Usage for Mineralienatlas project only
Wolframit, Rauchquarz

FO.: Akchatau, Qaraghandy oblysy (Karaganda), Kasachstan / Stufengröße: 4,5 x 3,2 cm
Collection: Hrouda
Copyright: Hrouda
Contribution: Hrouda 2020-03-27
Locality: Akchatau (Aqshatau; Akcatau; Akschatau) / Qaraghandy oblysy (Karaganda) / Kasachstan
Wolframite
Views (File:
1628399400
): 602
Wolframite
Well shaped Wolframite specimen, from Kara-Oba W deposit, Betpakdala Desert, Karazhal, Karaganda Region, Kazakhstan; Dimensions: 58 mm x 48 mm x 34 mm
Copyright: pegmatite; Contribution: pegmatite
Location: Kasachstan/Qaraghandy oblysy (Karaganda)/Betpakdala-Steppe (Hungersteppe; Bet-Pak-Dal; Betpak-Dala)/Kara Oba (Karaoba)
Mineral: Wolframite
Image: 1628399400
Rating: 9 (votes: 1)
License: Usage for Mineralienatlas project only
Wolframite

Well shaped Wolframite specimen, from Kara-Oba W deposit, Betpakdala Desert, Karazhal, Karaganda Region, Kazakhstan; Dimensions: 58 mm x 48 mm x 34 mm
Copyright: pegmatite
Contribution: pegmatite 2021-08-08
Locality: Kara Oba (Karaoba) / Betpakdala-Steppe (Hungersteppe; Bet-Pak-Dal; Betpak-Dala) / Qaraghandy oblysy (Karaganda) / Kasachstan
Wolframit
Views (File:
1230055782
): 3050, Rating: 8.11
Wolframit
Wolframitstufe in Paragenese mit Quarz xx, Fluorit xx, Muskovit xx; Fundort: Yaogangxian Mine, Yizhang Co., Chenzhou-Präfektur, Hunan, China; Größe: 14 x 10 cm - Größe des großen Wolframitaggregats ab dem Fluorit X: 9 cm
Copyright: Mineralroli; Contribution: Mineralroli
Collection: Mineralroli
Location: China/Hunan, Provinz/Chenzhou, Präfektur/Yizhang, Kreis/Yaogangxian Mine
Mineral: Wolframite
Image: 1230055782
Rating: 8.11 (votes: 9)
License: Usage for Mineralienatlas project only
Wolframit

Wolframitstufe in Paragenese mit Quarz xx, Fluorit xx, Muskovit xx; Fundort: Yaogangxian Mine, Yizhang Co., Chenzhou-Präfektur, Hunan, China; Größe: 14 x 10 cm - Größe des großen Wolframitaggregat...
Collection: Mineralroli
Copyright: Mineralroli
Contribution: Mineralroli 2008-12-23
Locality: Yaogangxian Mine / Yizhang, Kreis / Chenzhou, Präfektur / Hunan, Provinz / China

You find additional Wolframite specimen at the Geolitho Museum

Collectors Summary

Color dunkelbraun, grau-schwarz
Streak color rötlichbraun, dunkelbraun, schwarz
Lustre leichter Metallglanz, Fettglanz
Hardness (Mohs) 5 - 5.5
Cleavages vollkommen
Fracture uneben, spröde
Crystal System monoklin,

Additional information / Summary

Eine Mischung aus Hübnerit und Ferberit, Mineralgruppe
Kein anerkanntes Mineral

Chemism

Chemical formula

(Fe,Mn,Mg)WO4

Additional chem. information

Mineralgruppe

Chemical composition

Eisen, Magnesium, Mangan, Sauerstoff, Wolfram

Unit weight: 300.25776097 u; Number of atoms in the formula: 6

Info

Empirical formula:

(Fe0.6Mn0.3Mg0.1)WO4

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Oxygen

O

21.31

4

66.67

15.9994300

63.9977200
Magnesium

Mg

0.81

0.1

1.67

24.3050600

2.4305060
Manganese

Mn

5.49

0.3

5.00

54.9380499

16.4814150
Iron

Fe

11.16

0.6

10.00

55.8452000

33.5071200
Tungsten

W

61.23

1

16.67

183.8410000

183.8410000

Strunz 9th edition incl. updates

4.DB.30

4: Oxide, Hydroxide (Oxide, Hydroxide, V[5,6]-Vanadate, Arsenite, Antimonite, Bismutite, Sulfite, Selenite, Tellurite, Iodate)
D: Metall: Sauerstoff = 1:2 und vergleichbare
B: Mit mittelgroßen [Kationen]: Ketten kantenverknüpfter Oktaeder
30:Wolframit-Gruppe

Hey's Chemical Index of Minerals

27.04.15

27: Sulphites, Chromates, Molybdates and Tungstates
04: Tungstates

IMA status

zurückgewiesen

Mineral status

Gemenge/Gemisch/Mischkristall

Optical Properties

Color

dunkelbraun, grau-schwarz

Streak color

rötlichbraun, dunkelbraun, schwarz

Lustre

leichter Metallglanz, Fettglanz

max. Birefringence

0.130
Birefringence chart\! Wolframite title=Birefringence chart Wolframite

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

2.17 - 2.31

RI value β

2.22 - 2.31

RI value γ / ε

2.30 - 2.46

Ri mean

Biaxial (+) 73° -

Orientation

X = b, Z ^ c = 17° - 21°

Pleochroism

Schattierungen von gelb, grün, rotbraun in Durchlicht, schwach in reflektiertem Licht

Anisotropism

ausgeprägt in reflektiertem Licht

Reflectivity: (Lambda nm) ↓, ↑, Ø

(470) 16.0, 17.30, 16.7
(546) 15.2, 16.35, 15.8
(589) 15.1, 16.25, 15.7
(650) 14.9, 16.10, 15.5
Reflection chart Wolframite

Reflectivity Ø

15.9

Crystallography

Crystal System

monoklin

Class (H-M)

2/m

Space Group number

13

Cell parameters a (Å)

4.75

Cell parameters b (Å)

5.72

Cell parameters c (Å)

4,97

Cell parameters a/b or c/a

0.83

Cell parameters c/b

0.699

Cell parameters α

90°

Cell parameters β

90.2°

Cell parameters γ

90°

Z

2

Volumne (ų)

108.679

X-Ray Powder Diffraction

4.76(40),
3.74(40),
3.65(40),
2.96(100),
2.94(100),
2.48(70),
1.771(40),
1.715(70)
XRD chart Wolframite

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

Crystals 3D

Open larger view

Physical Properties

Hardness (Mohs)

5 - 5.5

Density (g/cm³)

9.175 ( ρ calc. Mineralienatlas )

Cleavages

vollkommen

Fracture

uneben, spröde

Preface

Occurrences

in Gängen

Associations

Calcit, Quarz, Scheelit, Dolomit, Arsenopyrit, Fluorit, Muskovit

Author (Name, Year)

Wallerius, 1747

Relevance, Usage

wichtigstes Wolframerz

References

Palache, Charles, Harry Berman & Clifford Frondel (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana Yale University 1837-1892, Seventh edition, Volume II: 1064.

Geological Society of America Memoir 85 (1962), 222.

Zeitschrift für Kristallographie (1976): 144: 238.

Picot -Johan (1982): 393.

Quantitative Data File for Ore Minerals, 3rd edition, (1993): 625.

Strunz Mineralogical Tables 9. Edition (2001), 210.

Other languages

Dutch

Wolframiet

German

Wolframit

Spanish

Wolframita

English

Wolframite

French

Wolframite

Serbian (Cyrillic Script)

Волфрамит

Russian

Вольфрамит

Japanese

鉄ﾏﾝｶﾞﾝ重石(廃名)　

Simplified Chinese

黑钨矿

Alternative Name

Call

French

Ecume de loup

German

Eisenscheel

Latin

Ferrum arsenico mineralisatum

Gal

English

Isowolframite

Latin

Lapis niger ex quo conflatur candidum plumbum

Italian

Licafro

Latin

Lupi Spuma

Latin

Lupus jovuis, molybdaemum

Latin

Manganesia, parva cum portoine martis et jovis mixta

Mock-lead

Prismatic scheelium ore

German

Prismatissches Scheel-Erz

Scheelate of Iron and Manganese

German

Scheeleisenerz

French

Schéelin ferruginé

Latin

Spuma lupi

French

Tungstate ferrugineux

French

Tungstate manganèsié

Tungstate of Iron and Manganese

Tungstic acid, iron, and manganese

Simplified Chinese

钨锰铁矿

Locations with GPS information