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Pirquitasite

Formula:
Ag
 
2
ZnSnS
 
4
System:TetragonalColour:Black
Hardness:4


Stannite Group. Hocartite-Pirquitasite Series.

Classification of Pirquitasite

IMA status:Approved
Strunz 8th edition ID:2/C.06-120
Nickel-Strunz 10th (pending) edition ID:2.CB.15a

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
C : Metal Sulfides, M: S = 1: 1 (and similar)
B : With Zn, Fe, Cu, Ag, etc.
Dana 8th edition ID:2.9.2.7

2 : SULFIDES
9 : AmBnXp, with (m+n):p = 1:1
Hey's CIM Ref.:6.1.15

6 : Sulphosalts - Sulphostannates, Sulphogermanates,Sulpharsenates, Sulphantimonates, Sulphovanadates and Sulphohalides
1 : Sulphostannates and other sulfides containing Sn
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Type Occurrence of Pirquitasite

Type Locality:Pirquitas Ag-Sn Deposit, Rinconada Department, Jujuy, Argentina

Physical Properties of Pirquitasite

Lustre:Metallic
Diaphaneity (Transparency):Opaque
Colour:Black
Hardness (Mohs):4

Crystallography of Pirquitasite

Crystal System:Tetragonal
Cell Parameters:a = 5.78Å, c = 10.82Å
Ratio:a:c = 1 : 1.872
Unit Cell Volume:V 361.48 ų (Calculated from Unit Cell)

Chemical Properties of Pirquitasite

Formula:
Ag
 
2
ZnSnS
 
4
Essential elements:Ag, S, Sn, Zn
All elements listed in formula:Ag, S, Sn, Zn
Common Impurities:Cu,Fe

Relationship of Pirquitasite to other Species

Series:Forms a series with Hocartite (see here)
Member of:Stannite Group
Related Minerals - Nickel-Strunz Grouping):

- +
2.CB.05aColoradoite
HgTe
2.CB.05aHawleyite
CdS
2.CB.05aMetacinnabar
HgS
2.CB.05cPolhemusite
(Zn,Hg)S
2.CB.05bSakuraiite
(Cu,Zn,Fe)
 
3
(In,Sn)S
 
4
2.CB.05aSphalerite
(Zn,Fe
2+
 
)S
2.CB.05aStilleite
ZnSe
2.CB.05aTiemannite
HgSe
2.CB.05UM1998-15-S:CuFeZn
Cu
 
2
Fe
 
3
Zn
 
5
S
 
10
2.CB.05aRudashevskyite
(Fe,Zn)S
2.CB.10aChalcopyrite
CuFeS
 
2
2.CB.10aEskebornite
CuFeSe
 
2
2.CB.10aGallite
CuGaS
 
2
2.CB.10bHaycockite
Cu
 
4
Fe
 
5
S
 
8
2.CB.10aLenaite
AgFeS
 
2
2.CB.10bMooihoekite
Cu
 
9
Fe
 
9
S
 
16
2.CB.10bPutoranite
Cu
 
9
(Fe,Ni)
 
9
S
 
16
2.CB.10aRoquesite
CuInS
 
2
2.CB.10bTalnakhite
Cu
 
9
(Fe,Ni)
 
8
S
 
16
2.CB.10aLaforêtite
AgInS
 
2
2.CB.15aČernýite
Cu
 
2
(Cd,Zn,Fe)SnS
 
4
2.CB.15aFerrokësterite
Cu
 
2
(Fe,Zn)SnS
 
4
2.CB.15aHocartite
Ag
 
2
(Fe
2+
 
,Zn)SnS
 
4
2.CB.15aIdaite
Cu
 
5
FeS
 
6
2.CB.15aKësterite
Cu
 
2
(Zn,Fe)SnS
 
4
2.CB.15aKuramite
Cu
 
3
SnS
 
4
2.CB.15bMohite
Cu
 
2
SnS
 
3
2.CB.15aStannite
Cu
 
2
(Fe,Zn)SnS
 
4
2.CB.15cStannoidite
Cu
+
6
Cu
2+
2
(Fe
2+
 
,Zn)
 
3
Sn
 
2
S
 
12
2.CB.15aVelikite
(Cu,Hg)
 
11
Sn
 
4
S
 
16
2.CB.15cUM2006-11-S:CuFeGeZn
Cu
 
8
(Fe,Zn)
 
3
Ge
 
2
S
 
12
 (?)
2.CB.20Chatkalite
Cu
 
6
FeSn
 
2
S
 
8
2.CB.20Mawsonite
Cu
 
6
Fe
 
2
SnS
 
8
2.CB.30Colusite
Cu
 
26
V
 
2
(As,Sn,Sb)
 
6
S
 
32
2.CB.30Germanite
Cu
 
13
Fe
 
2
Ge
 
2
S
 
16
2.CB.30Germanocolusite
Cu
 
26
V
 
2
(Ge,As)
 
6
S
 
32
2.CB.30Nekrasovite
Cu
 
26
V
 
2
(Sn,As,Sb)
 
6
S
 
32
2.CB.30Stibiocolusite
Cu
 
13
V
 
4
(Sb,Sn,As)
 
3
S
 
16
2.CB.30Ovamboite
Cu
 
20
(Fe,Cu,Zn)
 
6
W
 
2
Ge
 
6
S
 
32
2.CB.30Maikainite
Cu
 
20
(Fe,Cu)
 
6
Mo
 
2
Ge
 
6
S
 
32
2.CB.35aHemusite
Cu
 
6
SnMoS
 
8
2.CB.35aKiddcreekite
Cu
 
6
SnWS
 
8
2.CB.35aPolkovicite
(Fe,Pb)
 
3
(Ge,Fe)
 
1-x
S
 
4
2.CB.35aRenierite
(Cu,Zn)
 
11
(Ge,As)
 
2
Fe
 
4
S
 
16
2.CB.35aVinciennite
Cu
+
7
Cu
2+
3
Fe
2+
2
Fe
3+
2
Sn(As,Sb)S
 
16
2.CB.35aMorozeviczite
(Pb,Fe)
 
3
Ge
 
1-x
S
 
4
2.CB.35bCatamarcaite
Cu
 
6
GeWS
 
8
2.CB.40Lautite
CuAsS
2.CB.45Cadmoselite
CdSe
2.CB.45Greenockite
CdS
2.CB.45Wurtzite
(Zn,Fe)S
2.CB.45Rambergite
MnS
2.CB.55aCubanite
CuFe
 
2
S
 
3
2.CB.55bIsocubanite
CuFe
 
2
S
 
3
2.CB.60Picotpaulite
TlFe
 
2
S
 
3
2.CB.60Raguinite
TlFeS
 
2
2.CB.65Argentopyrite
AgFe
 
2
S
 
3
2.CB.65Sternbergite
AgFe
 
2
S
 
3
2.CB.70Sulvanite
Cu
 
3
VS
 
4
2.CB.75Vulcanite
CuTe
2.CB.80Empressite
AgTe
2.CB.85Muthmannite
AuAgTe
 
2
Related Minerals - Hey's Index Grouping:

- +
6.1.1Kuramite
Cu
 
3
SnS
 
4
6.1.2Mohite
Cu
 
2
SnS
 
3
6.1.3Velikite
(Cu,Hg)
 
11
Sn
 
4
S
 
16
6.1.4Hemusite
Cu
 
6
SnMoS
 
8
6.1.5Kiddcreekite
Cu
 
6
SnWS
 
8
6.1.6Stannite
Cu
 
2
(Fe,Zn)SnS
 
4
6.1.7Rhodostannite
Cu
 
2
FeSn
 
3
S
 
8
6.1.8Mawsonite
Cu
 
6
Fe
 
2
SnS
 
8
6.1.9Chatkalite
Cu
 
6
FeSn
 
2
S
 
8
6.1.10Ferrokësterite
Cu
 
2
(Fe,Zn)SnS
 
4
6.1.11Kësterite
Cu
 
2
(Zn,Fe)SnS
 
4
6.1.12Stannoidite
Cu
+
6
Cu
2+
2
(Fe
2+
 
,Zn)
 
3
Sn
 
2
S
 
12
6.1.13Černýite
Cu
 
2
(Cd,Zn,Fe)SnS
 
4
6.1.14Vinciennite
Cu
+
7
Cu
2+
3
Fe
2+
2
Fe
3+
2
Sn(As,Sb)S
 
16
6.1.16Hocartite
Ag
 
2
(Fe
2+
 
,Zn)SnS
 
4
6.1.17Teallite
(Pb,Sn)SnS
 
2
6.1.18Franckeite
Fe
2+
 
(Pb,Sn
2+
 
)
 
6
Sn
4+
2
Sb
 
2
S
 
14
6.1.19Lévyclaudite
Pb
 
8
Sn
 
7
Cu
 
3
(Bi,Sb)
 
3
S
 
28
6.1.20Cylindrite
Pb
 
3
Sn
 
4
FeSb
 
2
S
 
14
6.1.21Potosíite
Pb
 
6
Sn
 
3
FeSb
 
3
S
 
16
6.1.22Sakuraiite
(Cu,Zn,Fe)
 
3
(In,Sn)S
 
4
6.1.23Petrukite
(Cu,Fe,Zn,Ag)
 
3
(Sn,In)S
 
4
6.1.24Incaite
(Pb,Ag)
 
4
Sn
 
4
FeSb
 
2
S
 
13

Other Names for Pirquitasite

Synonyms:
IMA1980-091
Other Languages:
German:Pirquitasit
Russian:Пиркитасит
Spanish:Pirquitasita

Other Information

Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Pirquitasite

Reference List:American Mineralogist (1983): 68: 1249.

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

Internet Links for Pirquitasite

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  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Search for Pirquitasite in the Natural History Museum (London) online catalogue
  • Pirquitasite details from Handbook of Mineralogy (PDF)
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    Localities for Pirquitasite

    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    Argentina
     
    • Jujuy
      • Rinconada Department
    		Bull.Min.(1982) 105, 229-235; Anthony, Bideaux, Bladh, Nichols: "Handbook of Mineralogy", Vol. 1, 1990
    Amer.Min.(2000) 85, 1066-1075
    Japan
     
    • Hokkaido Island
      • Sapporo
    		Kojima et al (1979) Kouzan Chishitsu, 29, 197-206.; Min. Jour. (Japan): 15:222-232.
    Mineral and/or Locality
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