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Petrukite

Collectors Summary

Color grau, braun
Streak color schwarz
Lustre Metallglanz
Hardness (Mohs) 4.75
Crystal System orthorhombisch, Pmn21

Chemism

Chemical formula

(Cu,Ag)2(Fe,Zn)(Sn,In)S4

Chemical composition

Eisen, Indium, Kupfer, Silber, Zink, Zinn, Schwefel

Unit weight: 453.48941 u; Number of atoms in the formula: 8

Info

Empirical formula:

(Cu0.75Ag0.25)2(Fe0.75Zn0.25)(Sn0.75In0.25)S4

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Sulfur

S

28.28

4

50.00

32.0655000

128.2620000
Iron

Fe

9.24

0.75

9.38

55.8452000

41.8839000
Copper

Cu

21.02

1.5

18.75

63.5463000

95.3194500
Zinc

Zn

3.61

0.25

3.13

65.4094000

16.3523500
Silver

Ag

11.89

0.5

6.25

107.8682200

53.9341100
Indium

In

6.33

0.25

3.13

114.8183000

28.7045750
Tin

Sn

19.63

0.75

9.38

118.7107000

89.0330250

Analysis wt%

Ø Cu : 27.40, Ag : 0.90, Fe : 12.40, Zn : 3.60, Sn : 24.80, In : 1.30, S : 29.90 (Ref: Canadian Mineralogist 89)

Strunz 9th edition incl. updates

2.KA.05

2: Sulfide und Sulfosalze (Sulfide, Selenide, Telluride, Arsenide, Antimonide, Bismutide, Sulfoarsenide, Sulfoantimonide, Sulfobismuthide)
K: Sulfoarsenate
A: Unterteilung 2.KA - 2.KB
05:Enargit-Gruppe

Lapis Classification

II/C.06-140

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

Classification by Hölzel

2.CB.710

2: SULFIDES
C: Sulfides (etc) with Me/S=1/1
B: With Zn,Cu (etc), Coordination Number ~[4] Framework of Cornersharing Tetrahedra: Sphalerite-Germanite-Family
7: Enargite-Sulvanite-Group

Dana 8th edition

02.09.18.01

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

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

 Stannite group

Optical Properties

Color

grau, braun

Streak color

schwarz

Diaphaneity (Transparency)

opak

Lustre

Metallglanz

Pleochroism

sehr schwach

Reflectivity Ø

27.96

Crystallography

Crystal System

orthorhombisch

Class (H-M)

mm2

Space Group number

31

Space Group

Pmn21

Cell parameters a (Å)

7.667

Cell parameters b (Å)

6.440

Cell parameters c (Å)

6.261

Cell parameters a/b or c/a

1.191

Cell parameters c/b

0.972

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

90°

Z

2

Volume (ų)

309.14

X-Ray Powder Diffraction

3.13(100),
2.712(40),
1.915(60),
1.636(50),
1.243(50),
1.106(60),
1.044(30)
XRD chart Petrukite

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

Crystals 3D

Open larger view

Physical Properties

Hardness (Mohs)

4.75

VHN (Hardness Vickers)

319 (100g)

Density (g/cm³)

4.61

4.872 ( ρ calc. Mineralienatlas )

(Co-)Type locality

(Co-)Type locality

Japan/Honshū (Honschu), Insel/Kinki (Kansai), Region/Hyogo, Präfektur/Asago, Stadt/Ikuno Mine

Kanada/British Columbia/Liard Mining Division/Turnagain-Flussgebiet/Herb Claim

Kanada/New Brunswick/Charlotte Co./Fredericton/Mount Pleasant Mine

Preface

Name from

William Petruk (geboren 1930), kanadischer Mineraloge welcher die mögliche Existenz des Minerals bei seiner Studie der Mount Pleasant Erzlagerstätte bemerkte.

Author (Name, Year)

Kissin & Owens, 1989

References

Kissin, S.A. & Owens, D.R. - The relatives of stannite in the light of new data. - Canadian Mineralogist 27 (1989), 673

Petruk W. - Tin sulphides from the deposit of Brunswick Tin Mines, Limited. Canadian Mineralogist 12 (1973), 46-54

IMA group assignments

 
Stannite group
A2DEX4
 
 

 
 
Briartite
Cu2(Zn,Fe)GeS4
tetragonal
I42m

 
 
Černýite
Cu2CdSnS4
tetragonal
I42m

 
 
Famatinite
Cu3SbS4
tetragonal
I42m

 
 
Ferrokësterite
Cu2FeSnS4
tetragonal
I4

 
 
Hocartite
Ag2FeSnS4
tetragonal
I42m

 
 
Kësterite
Cu2(Zn,Fe)SnS4
tetragonal
I4

 
 
Keutschite
Cu2AgAsS4
tetragonal
I42m

 
 
Kuramite
Cu3SnS4
tetragonal
I42m

 
 
Luzonite
Cu3AsS4
tetragonal
I42m

 
 
Omariniite
Cu8Fe2ZnGe2S12
orthorhombisch
I222

 
 
Permingeatite
Cu3SbSe4
tetragonal
I42m

 
 
Petrukite
(Cu,Ag)2(Fe,Zn)(Sn,In)S4
orthorhombisch
Pmn21

 
 
Pirquitasite
Ag2ZnSnS4
tetragonal
I42m, I4

 
 
Richardsite
Zn2CuGaS4
tetragonal
I42m

 
 
Stannite
Cu2FeSnS4
tetragonal
I42m

 
 
Stannoidite
Cu8(Fe,Zn)3Sn2S12
orthorhombisch
I222

 
 
UM1984-30-S:CuFeSn
 
 
 

 
 
Velikite
Cu2(Hg,Zn)SnS4
tetragonal
I4

 
 
Zincobriartite
Cu2(Zn,Fe)(Ge,Ga)S4
tetragonal
I42m

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Actuality: 09. May 2025 - 18:35:57

Other languages

German

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English

Petrukite

Russian

Петрукит

CNMNC (IMA)-Number

IMA 1985-052

CNMNC symbol

Symbol

Ptk

Locations with GPS information

IDs

GUSID (Global unique identifier short form) NZBAhdVcOkeNXP6Oy91OKw
GUID (Global unique identifier) 85409035-5CD5-473A-8D5C-FE8ECBDD4E2B
Database ID 3016