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Pyrrhotite-3T

Collectors Summary

Crystal System trigonal, P3121

Chemism

Chemical formula

Fe7S8

Chemical composition

Eisen, Schwefel

Unit weight: 647.4404 u; Number of atoms in the formula: 15

Info

Empirical formula:

Fe7S8

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Sulfur

S

39.62

8

53.33

32.0655000

256.5240000

Iron

Fe

60.38

7

46.67

55.8452000

390.9164000

Mineral status

Polytype

Variety / polytype of

Pyrrhotite

Crystallography

Crystal System

trigonal

Class (H-M)

32

Space Group number

152

Space Group

P3121

Cell parameters a (Å)

6.866(1)

Cell parameters b (Å)

-

Cell parameters c (Å)

17.088(2)

Cell parameters a/b or c/a

2.489

Cell parameters c/b

-

Volumne (ų)

697.637

Crystals 3D

Open larger view

References

Keller-Besrest, F.; Collin, G.; - Structure and planar faults in the defective Ni As-type compound 3c Fe7S8 - Acta Crystallographica B (1983) 39, 296-303

Other languages

German

Pyrrhotin-3T

English

Pyrrhotite-3T