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Molybdenite-3R

Pictures (2 Images total)

Molybdänit-3 R
Views (Image: 1464966039): 1927
Molybdänit-3 R (SNr: Len-Mo3R-3-1-1)

Bildhöhe etwa 9 mm; Bei dem oberen dreiseitigen Kristall handelt e sich um einen quer aufgespaltenen Molybdänit der Strukturvariante 3R. Der untere Kristall zeigt Pyramidenflächen und ein Basispina...
Collection: Klaus Schäfer
Copyright: Klaus Schäfer
Contribution: Klaus Schäfer 2016-06-03
Locality: Grube Lengenbach / Fäld (Imfeld, Im Feld) / Binn / Goms, Bezirk / Wallis, Kanton / Schweiz
Molybdänit
Views (Image: 1464966072): 622
Molybdänit (SNr: Len-Mo3R-3-1-2)

Bildbreite etwa 11 mm; Dieses Molybdänit-Aggregat setzt sich aus mehreren nebeneinander gewachsenen, hexagonalen Individuen zusammen. Der Fundort ist der Lengenbach im Binntal, Wallis, Schweiz. Die...
Collection: Klaus Schäfer
Copyright: Klaus Schäfer
Contribution: Klaus Schäfer 2016-06-03
Locality: Grube Lengenbach / Fäld (Imfeld, Im Feld) / Binn / Goms, Bezirk / Wallis, Kanton / Schweiz

Collectors Summary

Hardness (Mohs) 1.5
Solubility +++ HNO3, Königswasser
Crystal System trigonal, R3m

Additional information / Summary

Polytyp von Molybdänit

Chemism

Chem­ical formula

MoS2

Addi­tional chem. informa­tion

Polytyp von Molybdänit

Chem­ical com­po­si­tion

Molybdän, Schwefel

Unit weight: 160.073 u; Number of atoms in the formula: 3

Info

Empirical formula:

MoS2

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Sulfur

S

40.06

2

66.67

32.0655000

64.1310000
Molybdenum

Mo

59.94

1

33.33

95.9420000

95.9420000

Anal­y­sis wt%

Mo : 59.30, W : 0.70, S : 40.00 (Ref: Schweizerische Mineralogische und Petrographische

Mitteilungen 64)

Strunz 9th edi­tion incl. updates

2.EA.30

2: Sulfide und Sulfosalze (Sulfide, Selenide, Telluride, Arsenide, Antimonide, Bismutide, Sulfarsenite, Sulfantimonite, Sulfbismuthite)
E: Metallsulfide mit M:S >= 1:2
A: M:S = 1:2, mit Cu, Ag, Au; Ni, Sn, PGE, Mo, W
30:Molybdänit-Gruppe

Clas­sifica­tion by Hölzel

2.EA.530

2: SULFIDES
E: Me/S=1/2 (also < 1/2)
A: Me/S=1/2 with Cu,Ag,Au, etc.
5: Molybdenite-Group

Min­eral sta­tus

Polytype

Var­i­ety / poly­type of

Molybdenite

Crystallography

Crystal Sys­tem

trigonal

Class (H-M)

3m

Space Group number

160

Space Group

R3m

Cell param­e­ters a (Å)

3.16

Cell param­e­ters b (Å)

-

Cell param­e­ters c (Å)

18.33

Cell param­e­ters a/b or c/a

5.801

Cell param­e­ters c/b

-

Z

3

Volumne (ų)

158.514

X-Ray Pow­der Diffrac­tion

6.09(100),
2.71(70),
2.63(60),
2.344(60),
2.194(60),
1.581(70),
1.592(70),
1.099(50)
XRD chart Molybdenite-3R

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

Crystals 3D

Open larger view

Physical Properties

Hard­ness (Mohs)

1.5

VHN (Hard­ness Vick­ers)

21 (100g)

Density (g/cm³)

4.99 (berechnet) 5.02 (gemessen)

5.03 ( ρ calc. Mineralienatlas )

Insta­bil­ity

+++ HNO3, Königswasser

(Co-)Type locality

(Co-)Type locality

Kanada/Nordwest-Territorien (Northwest Territories)/Mackenzie District/Yellowknife/Con Mine

References

Handbook of Mineralogy Vol I p336

Canadian Mineralogist (1963) 7:524-527

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

Jordisite

MoS2

amorph

2.EA.30

'Castaingite'

CuMo2S5

2.EA.30

Drysdallite

Mo(Se,S)2

hexagonal : 6/mmm : P63/mmc

2.EA.30

Tungstenite

WS2

hexagonal : 6/mmm : P63/mmc

2.EA.30

Molybdenite

MoS2

2.EA.30

'Dzhezkazganite'

ReMoCu2PbS6

2.EA.30

'Molybdenite-2H' (Pol.v. Molybdenite)

MoS2

hexagonal : 6/mmm : P63/mmc

2.EA.30

'Molybdenite-3R' (Pol.v. Molybdenite)

MoS2

trigonal : 3m : R3m

2.EA.30

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

Molybdenite

MoS2

2.EA.50

'Molybdenite-2H' (Pol.v. Molybdenite)

MoS2

hexagonal : 6/mmm : P63/mmc

2.EA.500

Tungstenite

WS2

hexagonal : 6/mmm : P63/mmc

2.EA.510

Drysdallite

Mo(Se,S)2

hexagonal : 6/mmm : P63/mmc

2.EA.520

'Molybdenite-3R' (Pol.v. Molybdenite)

MoS2

trigonal : 3m : R3m

2.EA.530

Jordisite

MoS2

amorph

2.EA.540

'Castaingite'

CuMo2S5

2.EA.560

Rheniite

ReS2

triklin : 1 : P1

2.EA.580

'Dzhezkazganite'

ReMoCu2PbS6

2.EA.590

Other languages

Spanish

Molibdenita-3R

English

Molybdenite-3R

German

Molybdänit-3R

Russian

Молибденит-3R

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

German pages

 DeWikiPedia - search for: Molybdänit-3R
Google-Bilder-Suche - search for: Molybdänit-3R
Mineralogisch-Petrographisches-Institut Hamburg - search for: Molybdänit-3R

English pages

 Mindat - search for: Molybdenite-3R
Webmineral - search for:Molybdenite-3R
Handbook-of-Mineralogy - search for: Molybdenite-3R
RRUFF - Raman, XRD and other mineral data - search for: Molybdenite-3R
RRUFF - References and PDF downloads - search for: Molybdenite-3R
American-Mineralogist-Crystal-Structure-Database - search for: Molybdenite-3R
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Russian pages

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Mineral Dealer

German pages

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Locations with GPS information