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Cobaltpentlandite

Collectors Summary

Color bronzegelb-met.
Hardness (Mohs) 4.00 - 4.50
Solubility +++ HNO3
Crystal System kubisch, Fm3m

Chemism

Chem­ical formula

Co9S8

Chem­ical com­po­si­tion

Kobalt, Schwefel

Unit weight: 786.9228081 u; Number of atoms in the formula: 17

Info

Empirical formula:

Co9S8

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Sulfur

S

32.60

8

47.06

32.0655000

256.5240000

Cobalt

Co

67.40

9

52.94

58.9332009

530.3988081

Anal­y­sis wt%

Co : 46.52, Ni : 9.11, Fe : 11.57, S : 32.80 (Ref: American Mineralogist 59)

Strunz 9th edi­tion incl. updates

2.BB.15

2: Sulfide und Sulfosalze (Sulfide, Selenide, Telluride, Arsenide, Antimonide, Bismutide, Sulfarsenite, Sulfantimonite, Sulfbismuthite)
B: Metallsulfide, M : S > 1 : 1 (hauptsächlich 2 : 1)
B: mit Nickel (Ni)
15:Pentlandit-Gruppe

Lapis Clas­sifica­tion

II/B.16-020

II: SULFIDE UND SULFOSALZE (Sulfide, Selenide, Telluride, Arsenide, Antimonide, Bismutide)
B: Sulfide, Selenide und Telluride mit Verhältnis Metall : S,Se,Te > 1:1
16: Sulfide mit vorherrschend Nickel, Kobalt, Rhodium und Palladium; Pentlandit-Gruppe

Clas­sifica­tion by Hölzel

2.BB.305

2: SULFIDES
B: Sulfides (etc) with Me/S > 1/1 (mostly 2/1)
B: With Ni,Fe,Co,Cu
3: Pentlandite-Group

Dana 8th edi­tion

02.07.01.03

02: Sulfide Minerals
07: Sulfides - Including Selenides and Tellurides where Am Bn Xp, with (m+n):p=9:8
01: Pentalndite Group (Isometric: Fm3m)

IMA sta­tus

Anerkannt von der CNMNC

Min­eral sta­tus

anerkanntes Mineral

IMA Classification

IMA Classification

Pentlandite Group

Optical Properties

Color

bronzegelb-met.

Crystallography

Crystal Sys­tem

kubisch

Class (H-M)

m3m

Space Group number

225

Space Group

Fm3m

Cell param­e­ters a (Å)

9.973

Cell param­e­ters b (Å)

-

Cell param­e­ters c (Å)

-

Cell param­e­ters a/b or c/a

1

Cell param­e­ters c/b

-

Cell param­e­ters α

90°

Cell param­e­ters β

90°

Cell param­e­ters γ

90°

Z

4

Volumne (ų)

991.922

X-Ray Pow­der Diffrac­tion

5.75(50),
3.008(100),
2.878(50),
2.288(40),
1.918(80),
1.763(100),
1.298(40),
1.018(50)

XRD chart Cobaltpentlandite

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

Crystal Structure 3D

Open larger view

Physical Properties

Hard­ness (Mohs)

4.00 - 4.50

VHN (Hard­ness Vick­ers)

345 (25g)

Density (g/cm³)

5.34 (berechnet)

5.269 ( ρ calc. Mineralienatlas )

Insta­bil­ity

+++ HNO3

Preface

Name from

Ursprünglich 1959 von O. Kuova, Maija Huhma und Yrjö Vuorelainen aufgrund seines Kobaltgehalts und seiner Verwandtschaft mit Pentlandit als "Kobalt Pentlandit" (zwei Wörter) bezeichnet. ouva, O., M. Huhma, and Y. Vuorelainen [1]

Der Name wurde später von der International Mineralogical Association in ein einziges Wort geändert (Burke 2008).[2]

Author (Name, Year)

Kouvo & Huhma & Vuorelainen, 1959

References

Handbook of Mineralogy (Anthony et al.), 1 (1990), 104

Kouva O, Huhma M, Vuorelainen Y (1959) A natural cobalt analog of pentlandite, American Mineralogist 44, 897-900

Name changed from cobalt pentlandite: Burke E A J (2008) Tidying up mineral names: an IMA-CNMNC scheme for suffixes, hyphens and diacritical marks, The Mineralogical Record 39, 131-135

IMA group assignments

Other languages

Spanish

Cobaltopentlandita

English

Cobaltpentlandite

German

Kobaltpentlandit

Russian

Кобальтпентландит

Simplified Chinese

钴镍黄铁矿

Alternative Name

English

Cobalt pentlandite

French

Cobalt-Pentlandite

Cobalt-Pentlandite

German

Cobaltpentlandit

German

Kobalt-Pentlandit

CNMNC symbol

Symbol

Copn

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

German pages

DeWikiPedia - search for: Kobaltpentlandit
Google-Bilder-Suche - search for: Kobaltpentlandit
Mineralienatlas.de (Forum) - search for: Kobaltpentlandit

English pages

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

Russian pages

Webmineral.ru - search for: Кобальтпентландит

Mineral Dealer

German pages

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Crystal-Treasure.com - search for: Kobaltpentlandit
Bosse - search for: Kobaltpentlandit
Edelsteine Neuburg - Gundolf Fischer - search for: Kobaltpentlandit
Geolitho marketplace, by and for collectors - search for: Kobaltpentlandit

Locations with GPS information