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Cooperite

Collectors Summary

Color stahlgrau metallisch
Lustre Metallglanz
Hardness (Mohs) 4 - 5
Cleavages {011}
Fracture muschelig
Solubility - Säuren, Königswasser
Crystal System tetragonal, P42/mmc

Chemism

Chem­ical formula

PtS

Chem­ical com­po­si­tion

Platin, Schwefel

Unit weight: 227.1437 u; Number of atoms in the formula: 2

Info

Empirical formula:

PtS

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Sulfur

S

14.12

1

50.00

32.0655000

32.0655000

Platinum

Pt

85.88

1

50.00

195.0782000

195.0782000

Anal­y­sis wt%

Ø Pt : 83.50, Pd : 1.40, Ni : 1.20, S : 14.50, PLT : 84.90 (Ref: American Mineralogist 78)

Strunz 9th edi­tion incl. updates

2.CC.30

2: Sulfide und Sulfosalze (Sulfide, Selenide, Telluride, Arsenide, Antimonide, Bismutide, Sulfarsenite, Sulfantimonite, Sulfbismuthite)
C: Metallsulfide, M : S = 1 : 1 (und ähnliche)
C: mit Nickel (Ni), Eisen (Fe), Cobalt (Co), usw.
30:Braggit-Gruppe

Lapis Clas­sifica­tion

II/C.25-030

II: SULFIDE UND SULFOSALZE (Sulfide, Selenide, Telluride, Arsenide, Antimonide, Bismutide)
C: Sulfide mit Metall : S,Se,Te ~ 1:1

Clas­sifica­tion by Hölzel

2.CC.150

2: SULFIDES
C: Sulfides (etc) with Me/S=1/1
C: With Pd,Pt, etc. - Coordination Number ~[4], Planar
1: Braggite-Group

Dana 8th edi­tion

02.08.05.01

02: Sulfide Minerals
08: Sulfides - Including Selenides and Tellurides where Am Bn Xp, with (m+n):p=1:1
05: Cooperite Group

IMA sta­tus

Erstbeschreibung vor CNMNC-Gründung (1959), als Mineral meist anerkannt

Min­eral sta­tus

anerkanntes Mineral

Optical Properties

Color

stahlgrau metallisch

Diaphane­ity (Trans­parency)

opak

Lus­tre

Metallglanz

Pleochro­ism

schwach; cremeweiß zu blauweiß

Anisotropism

stark; grüngrau zu weißgelb zu braungrau und braun

Reflec­tiv­ity: (Lambda nm) ↓, ↑, Ø

(400) 40.90, 46.60, 43.75
(420) 42.00, 47.30, 44.65
(440) 42.60, 47.90, 45.25
(460) 42.70, 48.30, 45.50
(480) 42.20, 48.40, 45.30
(500) 41.50, 48.20, 44.85
(520) 40.40, 47.80, 44.10
(540) 39.40, 47.20, 43.30
(560) 38.50, 46.60, 42.55
(580) 37.80, 46.10, 41.95
(600) 37.20, 45.50, 41.35
(620) 36.60, 45.10, 40.85
(640) 36.00, 44.70, 40.35
(660) 35.60, 44.20, 39.90
(680) 35.10, 43.70, 39.40
(700) 34.60, 43.30, 38.95

Reflection chart Cooperite

Reflec­tiv­ity Ø

42.63

Crystallography

Crystal Sys­tem

tetragonal

Class (H-M)

4/mmm

Space Group number

131

Space Group

P42/mmc

Cell param­e­ters a (Å)

3.465

Cell param­e­ters b (Å)

-

Cell param­e­ters c (Å)

6.104

Cell param­e­ters a/b or c/a

1.762

Cell param­e­ters c/b

-

Cell param­e­ters α

90°

Cell param­e­ters β

90°

Cell param­e­ters γ

90°

Z

2

Volumne (ų)

73.286

X-Ray Pow­der Diffrac­tion

3.013(100),
2.450(60),
1.911(80),
1.753(60),
1.732(50),
1.507(70),
1.231(50),
1.030(40)

XRD chart Cooperite

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

Crystal Structure 3D

Open larger view

Physical Properties

Hard­ness (Mohs)

4 - 5

VHN (Hard­ness Vick­ers)

743–1018; Ø 851 (100g)

Density (g/cm³)

10.2 (berechnet) 9.5 (gemessen)

10.293 ( ρ calc. Mineralienatlas )

Cleav­ages

{011}

Frac­ture

muschelig

Insta­bil­ity

- Säuren, Königswasser

Preface

Name from

Der Name ehrt den Südafrikanischen Metallurgen Richard A. Cooper (1890–1972), aus Johannesburg, der das Mineral zuerst beschrieb.

Author (Name, Year)

Wartenweiler, 1928

References

Handbook of Mineralogy (Anthony et al.), 1 (1990), 107

Journal of the Chemical, Metallurgical and Mineralogical Society of South Africa 28, 281-283

Cabri, L.J., Laflamme, J.H.G., Stewart, J.M., Turner, K., and Skinner, B.J. - On cooperite, braggite, and vysotskite. American Mineralogist 63 (1978), 832-839.

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

Braggite

(Pt,Pd,Ni)S

tetragonal : 4/m : P42/m

2.CC.30

Cooperite

PtS

tetragonal : 4/mmm : P42/mmc

2.CC.30

Vysotskite

(Pd,Ni)S

tetragonal : 4/m : P42/m

2.CC.30

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

Vysotskite

(Pd,Ni)S

tetragonal : 4/m : P42/m

II/C.25-010

Braggite

(Pt,Pd,Ni)S

tetragonal : 4/m : P42/m

II/C.25-020

Cooperite

PtS

tetragonal : 4/mmm : P42/mmc

II/C.25-030

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

Vysotskite

(Pd,Ni)S

tetragonal : 4/m : P42/m

2.CC.100

Braggite

(Pt,Pd,Ni)S

tetragonal : 4/m : P42/m

2.CC.110

Cooperite

PtS

tetragonal : 4/mmm : P42/mmc

2.CC.150

Jacutingaite

Pt2HgSe3

trigonal : 3m : P3m1

2.CC.180

Related minerals "Dana 8. Classification" [Mineral | Chemical formula : Crystal system : Class (H-M) | Space Group | Indenture number]

Galena

PbS

kubisch : m3m : Fm3m

02.08.01.01

Clausthalite

PbSe

kubisch : m3m : Fm3m

02.08.01.02

Altaite

PbTe

kubisch : m3m : Fm3m

02.08.01.03

Alabandite

MnS

kubisch : m3m : Fm3m

02.08.01.04

Oldhamite

(Ca,Mg,Fe,Mn)S

kubisch : m3m : Fm3m

02.08.01.05

Niningerite

(Mg,Fe2+,Mn)S

kubisch : m3m : Fm3m

02.08.01.06

Borovskite

Pd3SbTe4

kubisch : m3m : Fm3m

02.08.01.07

Crerarite

(Pt,Pb)Bi3(S,Se)4-x

kubisch : m3m : Fm3m

02.08.01.08

Keilite

(Fe,Mg,Mn,Ca,Cr)S

kubisch : m3m : Fm3m

02.08.01.09

Sphalerite

(Zn,Fe)S

kubisch : 43m : F43m

02.08.02.01

Stilleite

ZnSe

kubisch : 43m : F43m

02.08.02.02

Metacinnabar

HgS

kubisch : 43m : F43m

02.08.02.03

Tiemannite

HgSe

kubisch : 43m : F43m

02.08.02.04

Coloradoite

HgTe

kubisch : 43m : F43m

02.08.02.05

Hawleyite

CdS

kubisch : 43m : F43m

02.08.02.06

Polhemusite

(Zn,Hg)S

02.08.03.01

Xingzhongite

(Pb,Cu,Fe)(Ir,Pt,Rh)2S4

kubisch : m3m : Fd3m

02.08.04.01

Cooperite

PtS

tetragonal : 4/mmm : P42/mmc

02.08.05.01

Vysotskite

(Pd,Ni)S

tetragonal : 4/m : P42/m

02.08.05.02

Braggite

(Pt,Pd,Ni)S

tetragonal : 4/m : P42/m

02.08.05.03

Polarite

Pd(Pb,Bi)

orthorhombisch : mm2 : Ccm21

02.08.06.01

Greenockite

CdS

hexagonal : 6mm : P63mc

02.08.07.02

Cadmoselite

CdSe

hexagonal : 6mm : P63mc

02.08.07.03

Rambergite

gamma-MnS

hexagonal : 6mm : P63mc

02.08.07.04

Hypercinnabar

HgS

02.08.08.01

Alternative Name

Cooperite (of Wartenweiler)

Cooperite (of Wartenweiler)

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

German pages

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English pages

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American-Mineralogist-Crystal-Structure-Database - search for: Cooperite
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Russian pages

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German pages

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