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Pirquitasite

Pictures (1 Images total)

Pirquitasit
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Pirquitasit
Oploca Vein System, Pirquitas Ag-Sn Deposit, Rinconada Department, Jujuy, Argentina; Tetragonal crystal of pirquitasite in a quartz pyrite matrix. FOV 1mm. Acquired from David Hospital who got it from David Garske. Supposedly analyzed by Marcus Origliari.
Copyright: Brent Thorne; Contribution: Stefan
Collection: Brent Thorne
Location: Argentinien/Jujuy, Provinz/Rinconada, Departamento/Pirquitas Ag-Sn-Lagerstätte/Oploca Mine
Mineral: Pirquitasite
Image: 1531462812
License: Usage for Mineralienatlas project only
Pirquitasit

Oploca Vein System, Pirquitas Ag-Sn Deposit, Rinconada Department, Jujuy, Argentina; Tetragonal crystal of pirquitasite in a quartz pyrite matrix. FOV 1mm. Acquired from David Hospital who got it f...
Collection: Brent Thorne
Copyright: Brent Thorne
Contribution: Stefan 2018-07-13
Locality: Oploca Mine / Pirquitas Ag-Sn-Lagerstätte / Rinconada, Departamento / Jujuy, Provinz / Argentinien

Collectors Summary

Color bräunlich grau, mit roten internen Reflektionen
Streak color bräunlich grau
Hardness (Mohs) 4.25
Crystal System tetragonal, I42m, I4

Chemism

Chemical formula

Ag2ZnSnS4

Chemical composition

Silber, Zink, Zinn, Schwefel

Unit weight: 528.11854 u; Number of atoms in the formula: 8

Info

Empirical formula:

Ag2ZnSnS4

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Sulfur

S

24.29

4

50.00

32.0655000

128.2620000
Zinc

Zn

12.39

1

12.50

65.4094000

65.4094000
Silver

Ag

40.85

2

25.00

107.8682200

215.7364400
Tin

Sn

22.48

1

12.50

118.7107000

118.7107000

Analysis wt%

Ag : 39.72, Zn : 11.40, Fe : 1.31, Sn : 23.12, S : 24.42 (Ref: Bulletin de Mineralogie 82)

Strunz 9th edition incl. updates

2.CB.15

2: Sulfide und Sulfosalze (Sulfide, Selenide, Telluride, Arsenide, Antimonide, Bismutide, Sulfoarsenide, Sulfoantimonide, Sulfobismuthide)
C: Metallsulfide, M : S = 1 : 1 (und ähnliche)
B: mit Zink (Zn), Eisen (Fe), Kupfer (Cu), Silber (Ag), usw.
15:Stannit-Gruppe

Lapis Classification

II/C.06-120

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.360

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
3: Stannite-Group

Dana 8th edition

02.09.02.07

02: Sulfide Minerals
09: Sulfides - Including Selenides and Tellurides where Am Bn Xp, with (m+n):p=1:1
02: Stannite Group (Tetragonal: I-42m) A2BCS type

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

 Stannite group

Optical Properties

Color

bräunlich grau, mit roten internen Reflektionen

Streak color

bräunlich grau

Diaphaneity (Transparency)

opak

Crystallography

Crystal System

tetragonal

Class (H-M)

42m, 4

Space Group number

121, 82

Space Group

I42m, I4

Cell parameters a (Å)

5.786

Cell parameters b (Å)

-

Cell parameters c (Å)

10.829

Cell parameters a/b or c/a

1.872

Cell parameters c/b

-

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

90°

Z

2

Volume (ų)

362.531

X-Ray Powder Diffraction

3.267(100),
2.901(40),
2.717(30),
2.049(60),
1.976(80),
1.735(80),
1.289(40),
1.165(40)
XRD chart Pirquitasite

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

Crystal Structure 3D

Open larger view

Physical Properties

Hardness (Mohs)

4.25

VHN (Hardness Vickers)

218 (25g)

Density (g/cm³)

4.822

4.838 ( ρ calc. Mineralienatlas )

(Co-)Type locality

(Co-)Type locality

Argentinien/Jujuy, Provinz/Rinconada, Departamento/Pirquitas Ag-Sn-Lagerstätte

Preface

Author (Name, Year)

Johan & Picot, 1982

References

American Mineralogist (1983): 68: 1249.

Bulletin de la Société française de Minéralogie et de Cristallographie (1982): 105: 229.

Strunz Mineralogical Tables 9. Edition

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: 12. May 2025 - 11:55:20

Other languages

German

Pirquitasit

Spanish

Pirquitasita

French

Pirquitasite

English

Pirquitasite

Russian

Пиркитасит

Alternative Name

Simplified Chinese

硫锡锌银矿

CNMNC (IMA)-Number

IMA 1980-091

CNMNC symbol

Symbol

Pi

Locations with GPS information

IDs

GUSID (Global unique identifier short form) lnY6S72gIEKAiTGkKjuFKg
GUID (Global unique identifier) 4B3A7696-A0BD-4220-8089-31A42A3B852A
Database ID 3067