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Hocartite

Big Photo

Pirquitas Ag-Sn Deposit, Rinconada Department, Jujuy, Argentina
© Knut Eldjarn

Formula:
Ag
 
2
(Fe
2+
 
,Zn)SnS
 
4
System:TetragonalColour:Brownish-grey
Lustre:MetallicHardness:4
Name:After Raymond Hocart, Professor of Mineralogy, University of Paris, France.


Stannite Group. Hocartite-Pirquitasite Series.

Classification of Hocartite

IMA status:Approved 1967
Strunz 8th edition ID:2/C.06-110
Nickel-Strunz 10th (pending) edition ID:2.CB.15

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:2.9.2.6

2 : SULFIDES
9 : AmBnXp, with (m+n):p = 1:1
Hey's CIM Ref.:6.1.16

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

Type Locality:Chocaya mine, Atocha-Quechisla District, Sud Chichas Province, Potosí Department, Bolivia
Year of Discovery:1968
Geological Setting of type material:In tin veins

Occurrences of Hocartite

Geological Setting:In tin veins.

Physical Properties of Hocartite

Lustre:Metallic
Diaphaneity (Transparency):Opaque
Colour:Brownish-grey
Hardness (Mohs):4
Hardness (Vickers):VHN25=209 - 234 kg/mm2
Hardness Data:Measured
Density (calculated):4.77 g/cm3

Crystallography of Hocartite

Crystal System:Tetragonal
Class (H-M):4 2m - Scalenohedral
Space Group:I4 2m
Cell Parameters:a = 5.74Å, c = 10.96Å
Ratio:a:c = 1 : 1.909
Unit Cell Volume:V 361.11 ų
Z:2
Morphology:Grains less than 1mm in diameter, also intergrowths.
Twinning:Polysynthetic twinning common.
X-Ray Powder Diffraction:
d-spacingIntensity
3.26 (100)
1.98 (80)
1.72 (70)
2.03 (50)
2.87 (40)
2.74 (30)
Comments:From Tacama, Bolivia

Chemical Properties of Hocartite

Formula:
Ag
 
2
(Fe
2+
 
,Zn)SnS
 
4
Idealised Formula:
Ag
 
2
Fe
2+
 
SnS
 
4
Essential elements:Ag, Fe, S, Sn
All elements listed in formula:Ag, Fe, S, Sn, Zn
Common Impurities:Zn,Cu

Relationship of Hocartite to other Species

Series:Forms a series with Pirquitasite (see here)
Member of:Stannite Group
Related Minerals - Nickel-Strunz Grouping):
2.CB.05Coloradoite
HgTe
2.CB.05Hawleyite
CdS
2.CB.05Metacinnabar
HgS
2.CB.05Polhemusite
(Zn,Hg)S
2.CB.05Sakuraiite
(Cu,Zn,Fe)
 
3
(In,Sn)S
 
4
2.CB.05Sphalerite
(Zn,Fe
2+
 
)S
2.CB.05Stilleite
ZnSe
2.CB.05Tiemannite
HgSe
2.CB.05Rudashevskyite
(Fe,Zn)S
2.CB.10Chalcopyrite
CuFeS
 
2
2.CB.10Eskebornite
CuFeSe
 
2
2.CB.10Gallite
CuGaS
 
2
2.CB.10Haycockite
Cu
 
4
Fe
 
5
S
 
8
2.CB.10Lenaite
AgFeS
 
2
2.CB.10Mooihoekite
Cu
 
9
Fe
 
9
S
 
16
2.CB.10Putoranite
Cu
 
9
Fe
 
9
S
 
16
2.CB.10Roquesite
CuInS
 
2
2.CB.10Talnakhite
Cu
 
9
(Fe,Ni)
 
8
S
 
16
2.CB.10Laforêtite
AgInS
 
2
2.CB.15Černýite
Cu
 
2
(Cd,Zn,Fe)SnS
 
4
2.CB.15Ferrokësterite
Cu
 
2
(Fe,Zn)SnS
 
4
2.CB.15Idaite
Cu
 
5
FeS
 
6
2.CB.15Kësterite
Cu
 
2
(Zn,Fe)SnS
 
4
2.CB.15Kuramite
Cu
 
3
SnS
 
4
2.CB.15Mohite
Cu
 
2
SnS
 
3
2.CB.15Pirquitasite
Ag
 
2
ZnSnS
 
4
2.CB.15Stannite
Cu
 
2
(Fe,Zn)SnS
 
4
2.CB.15Stannoidite
Cu
+
6
Cu
2+
2
(Fe
2+
 
,Zn)
 
3
Sn
 
2
S
 
12
2.CB.15Velikite
(Cu,Hg)
 
11
Sn
 
4
S
 
16
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.35Hemusite
Cu
 
6
SnMoS
 
8
2.CB.35Kiddcreekite
Cu
 
6
SnWS
 
8
2.CB.35Polkovicite
(Fe,Pb)
 
3
(Ge,Fe)
 
1-x
S
 
4
2.CB.35Renierite
(Cu,Zn)
 
11
(Ge,As)
 
2
Fe
 
4
S
 
16
2.CB.35Vinciennite
Cu
+
7
Cu
2+
3
Fe
2+
2
Fe
3+
2
Sn(As,Sb)S
 
16
2.CB.35Morozeviczite
(Pb,Fe)
 
3
Ge
 
1-x
S
 
4
2.CB.35Catamarcaite
Cu
 
6
GeWS
 
8
2.CB.40Lautite
CuAsS
2.CB.45Cadmoselite
CdSe
2.CB.45Greenockite
CdS
2.CB.45Hypercinnabar
HgS
2.CB.45Wurtzite
(Zn,Fe)S
2.CB.45Rambergite
MnS
2.CB.55Cubanite
CuFe
 
2
S
 
3
2.CB.55Isocubanite
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
(Ag,Au)Te
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
6.1.15Pirquitasite
Ag
 
2
ZnSnS
 
4
6.1.17Teallite
(Pb,Sn)SnS
 
2
6.1.18Franckeite
Pb
 
5
Sn
 
3
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 Hocartite

Synonyms:
IMA1967-046
German names:
Hocartit
Russian names:
Окартит
Spanish names:
Hocartita

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 Hocartite

Reference List:Bulletin de Minéralogie (1968): 91, 383.

American Mineralogist: 54, 573 (abs. ref. 1).

Internet Links for Hocartite

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

    Hide Locality List
    The map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
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    (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
        • Pirquitas Ag-Sn Deposit
    		No reference listed
    Austria
     
    • Carinthia
      • Kreuzeck group
        • Kreuzeck Mt. area
    		Feitzinger, G., W. H. Paar, M. Tarkian, R. Reche, O. Weinzierl, W. Prochaska & H. Holzer (1995): Vein type Ag-(Au)-Pb, Zn, Cu-(W, Sn) mineralization in the Southern Kreuzeck Mountains, Carinthia Province, Austria. Mineralogy and Petrology 53: 307-332.
    Bolivia
     
    • La Paz Department
      • Inquisivi Province
        • Colquiri
    • Potosí Department
      • Chayanta Province
    		[MinRec 32:469]
      • Saavedra Province
        • Machacamarca District (Colavi District)
    		Salomon Rivas y Federico Ahlfeld (1998) Los Minerales de Bolivia y sus Parajes. (Santa Cruz)
      • Sud Chichas Province
        • Atocha-Quechisla District
    		[MinRec 32:461]
    No reference listed
    Salomon Rivas y Federico Ahlfeld (1998) Los Minerales de Bolivia y sus Parajes. (Santa Cruz)
    China
     
    • Hunan Province
      • Chenzhou Prefecture
        • Guiyang Co.
    		Anthony, J.W. et al.: Handbook of Mineralogy
    • Jiangxi Province
      • Shangrao Prefecture
        • Wannian Co.
    		Dong Zhensheng et al. (1996). In: Tu Guangzhi, Ed.: Low Temperature Geochemistry, Science Press (Beijing), 32-42.
    France
     
    • Auvergne
      • Cantal
        • Brioude - Massiac area
          • Massiac
            • Molèdes
    		Bull. Soc. fr. Min. Crist. (1968) 91, 383-387
    Germany
     
    • Bavaria
      • Upper Palatinate
        • Oberpfälzer Wald
          • Waldsassen
            • Pfaffenreuth
    		Weiss: "Mineralfundstellen, Deutschland West", Weise (Munich), 1990
    Japan
     
    • Hokkaido Island
      • Sapporo
    		Kojima et al (1979) Kouzan Chishitsu, 29, 197-206.
    • Honshu Island
      • Chubu Region
        • Gifu Prefecture
          • Hida City
    		Nitta & Akiyama (1981) Kouzan Chishitsu Tokubetsugo, 10, 175-192.
    Peru
     
    • Huánuco Department
      • Dos de Mayo Province
        • Huallanca District
    		No reference listed
    Russia
     
    • Eastern-Siberian Region
      • Saha Republic (Sakha Republic; Yakutia)
    		[World of Stones 12:49]
    Slovakia
     
    • Prešov Region
      • Northern Slanské Mts
    		Duda et. all.,1981:Minerály severnej časti Slanských vrchov. Min.Slovca,Monografia 2,Bratislava, 98 p
    USA
     
    • Arizona
      • Cochise Co.
        • Mule Mts
          • Warren District
    		[MinRec 24:421]
    Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 252; Graeme, R. (1993), Bisbee revisited, Min.Rec.: 24: 421-436.
    • Nevada
      • Lander Co.
        • Lewis District
    		NBMG Spec. Pub. 31 Minerals of Nevada
    Mineral and/or Locality
    Google
     
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