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Molybdenite-2H

Collectors Summary

Color bleigrau
Lustre Metallglanz
Hardness (Mohs) 2
Solubility +++ HNO3, Königswasser
Crystal System hexagonal, P63/mmc

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 : 59.97, S : 40.03 (Ref: berechnet)

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.500

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

Optical Properties

Color

bleigrau

Change in color

weiß in reflektiertem Licht

Diaphaneity (Transparency)

opak

Lustre

Metallglanz

Pleochroism

sehr ausgeprägt

Anisotropism

extrem

Reflectivity: (Lambda nm) ↓, ↑, Ø

(470) 21.40, 44.70, 33.1
(546) 19.50, 38.55, 29.0
(589) 19.05, 38.80, 28.9
(650) 18.70, 39.40, 29.1

Reflection chart Molybdenite-2H

Reflectivity Ø

30.01

Crystallography

Crystal System

hexagonal

Class (H-M)

6/mmm

Space Group number

194

Space Group

P63/mmc

Cell parameters a (Å)

3.16

Cell parameters b (Å)

-

Cell parameters c (Å)

12.32

Cell parameters a/b or c/a

3.899

Cell parameters c/b

-

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

120°

Z

2

Volumne (ų)

106.541

X-Ray Powder Diffraction

6.28(100),
2.74(30),
2.28(90),
2.04(20),
1.824(60),
1.578(40),
1.530(40),
1.296(20)

XRD chart Molybdenite-2H

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

Physical Properties

Hardness (Mohs)

2

VHN (Hardness Vickers)

29

Density (g/cm³)

4.84 (gemessen)

4.989 ( ρ calc. Mineralienatlas )

Instability

+++ HNO3, Königswasser

References

Handbook of Mineralogy Vol I p336

Other languages

Spanish

Molibdenita-2H

English

Molybdenite-2H

German

Molybdänit-2H

Russian

Молибденит-2H

Russian

Молибденит-2H1

Alternative Name

Molybdenite-2H1

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