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Hocartite

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Formula:
Ag2(Fe2+,Zn)SnS4
Colour:
Brownish-grey
Lustre:
Metallic
Hardness:
4
Specific Gravity:
4.77 (Calculated)
Crystal System:
Tetragonal
Member of:
Name:
After Raymond Hocart (1896-1983), Professor of Mineralogy, University of Paris, France.

Classification of Hocartite

Approved
Approval Year:
1967
2/C.06-110
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.
2.9.2.6

2 : SULFIDES
9 : AmBnXp, with (m+n):p = 1:1
6.1.16

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

Physical Properties of Hocartite

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

Optical Data of Hocartite

Type:
Uniaxial (-)
Type:
Anisotropic
Anisotropism:
distinct orangish to greenish
Reflectivity:
400nmR1=27.0%R2=27.7%
420nmR1=26.5%R2=27.2%
440nmR1=26.0%R2=26.7%
460nmR1=25.5%R2=26.3%
480nmR1=25.2%R2=26.0%
500nmR1=24.8%R2=25.7%
520nmR1=24.7%R2=25.5%
540nmR1=24.5%R2=25.4%
560nmR1=24.4%R2=25.3%
580nmR1=24.5%R2=25.4%
600nmR1=24.6%R2=25.5%
620nmR1=24.8%R2=25.6%
640nmR1=25.2%R2=25.2%
660nmR1=25.4%R2=24.8%
680nmR1=24.8%R2=24.4%
700nmR1=23.7%R2=24.5%

Reflectance graph
Graph shows reflectance levels at different wavelengths (in nm). Top of box is 100%. Peak reflectance is 27.7%.
R1 shown in black, R2 shown in red
Colour in reflected light:
brownish grey
Pleochroism:
Weak
Comments:
gray brown to violet gray

Chemical Properties of Hocartite

Formula:
Ag2(Fe2+,Zn)SnS4
IMA Formula:
Ag2FeSnS4
Idealised Formula:
Ag2Fe2+SnS4
Common Impurities:
Zn,Cu

Crystallography of Hocartite

Crystal System:
Tetragonal
Class (H-M):
4 2m - Scalenohedral
Space Group:
I4 2m
Cell Parameters:
a = 5.74(3) Å, c = 10.96(5) Å
Ratio:
a:c = 1 : 1.909
Unit Cell V:
361.11 ų
Z:
2
Morphology:
Grains less than 1mm in diameter, also intergrowths.
Twinning:
Polysynthetic twinning common.

X-Ray Powder Diffraction

Powder Diffraction Data:
d-spacingIntensity
3.26 (100)
1.98 (80)
1.72 (70)
2.03 (50)
2.87 (40)
2.74 (30)
1.666 (30)
Comments:
From Tacama, Bolivia

Type Occurrence of Hocartite

General Appearance of Type Material:
grains and inclusions in sphalerite and wurtzite
Place of Conservation of Type Material:
National School of Mines, Paris, France.
Geological Setting of Type Material:
In hydrothermal tin veins
Associated Minerals at Type Locality:

Synonyms of Hocartite

Other Language Names for Hocartite

German:Hocartit
Simplified Chinese:银黄锡矿
Spanish:Hocartita

Relationship of Hocartite to other Species

Member of:
Other Members of this group:
BriartiteCu2(Fe,Zn)GeS4
ČernýiteCu2(Cd,Zn,Fe)SnS4
FamatiniteCu3SbS4
FerrokësteriteCu2(Fe,Zn)SnS4
Ge-stannoiditeCu8Fe2ZnGe2S12
KësteriteCu2ZnSnS4
KeutschiteCu2AgAsS4
KuramiteCu3SnS4
LuzoniteCu3AsS4
PermingeatiteCu3SbSe4
Petrukite(Cu,Fe,Zn,Ag)3(Sn,In)S4
PirquitasiteAg2ZnSnS4
StanniteCu2FeSnS4
Unnamed (Cu-Zn-In Sulphide)CuZn2InS4
VelikiteCu2HgSnS4
ZincobriartiteCu2(Zn,Fe)(Ge,Ga)S4
Forms a series with:

Related Minerals - Nickel-Strunz Grouping

2.CB.AgmantiniteAg2MnSnS4
2.CB.05aColoradoiteHgTe
2.CB.05aHawleyiteCdS
2.CB.05aMetacinnabarHgS
2.CB.05cPolhemusite(Zn,Hg)S
2.CB.05bSakuraiite(Cu,Zn,Fe)3(In,Sn)S4
2.CB.05aSphaleriteZnS
2.CB.05aStilleiteZnSe
2.CB.05aTiemanniteHgSe
2.CB.05UM1998-15-S:CuFeZnCu2Fe3Zn5S10
2.CB.05aRudashevskyite(Fe,Zn)S
2.CB.10aChalcopyriteCuFeS2
2.CB.10aEskeborniteCuFeSe2
2.CB.10aGalliteCuGaS2
2.CB.10bHaycockiteCu4Fe5S8
2.CB.10aLenaiteAgFeS2
2.CB.10bMooihoekiteCu9Fe9S16
2.CB.10bPutoraniteCu1.1Fe1.2S2
2.CB.10aRoquesiteCuInS2
2.CB.10bTalnakhiteCu9(Fe,Ni)8S16
2.CB.10aLaforêtiteAgInS2
2.CB.15aČernýiteCu2(Cd,Zn,Fe)SnS4
2.CB.15aFerrokësteriteCu2(Fe,Zn)SnS4
2.CB.15aIdaiteCu5FeS6
2.CB.15aKësteriteCu2ZnSnS4
2.CB.15aKuramiteCu3SnS4
2.CB.15bMohiteCu2SnS3
2.CB.15aPirquitasiteAg2ZnSnS4
2.CB.15aStanniteCu2FeSnS4
2.CB.15cStannoiditeCu+6Cu2+2(Fe2+,Zn)3Sn2S12
2.CB.15aVelikiteCu2HgSnS4
2.CB.15cUM2006-11-S:CuFeGeZnCu8(Fe,Zn)3Ge2S12 (?)
2.CB.20ChatkaliteCu6FeSn2S8
2.CB.20MawsoniteCu6Fe2SnS8
2.CB.30ColusiteCu12VAs3S16
2.CB.30GermaniteCu13Fe2Ge2S16
2.CB.30GermanocolusiteCu26V2(Ge,As)6S32
2.CB.30NekrasoviteCu26V2(Sn,As,Sb)6S32
2.CB.30StibiocolusiteCu13V(Sb,Sn,As)3S16
2.CB.30Ovamboite Cu20(Fe,Cu,Zn)6W2Ge6S32
2.CB.30MaikainiteCu20(Fe,Cu)6Mo2Ge6S32
2.CB.35aHemusiteCu6SnMoS8
2.CB.35aKiddcreekiteCu6SnWS8
2.CB.35aPolkovicite(Fe,Pb)3(Ge,Fe)1-xS4
2.CB.35aRenierite(Cu1+,Zn)11Fe4(Ge4+,As5+)2S16
2.CB.35aVincienniteCu+7Cu2+3Fe2+2Fe3+2Sn(As,Sb)S16
2.CB.35aMorozeviczite(Pb,Fe)3Ge1-xS4
2.CB.35bCatamarcaiteCu6GeWS8
2.CB.40LautiteCuAsS
2.CB.45CadmoseliteCdSe
2.CB.45GreenockiteCdS
2.CB.45Wurtzite(Zn,Fe)S
2.CB.45RambergiteMnS
2.CB.45Buseckite(Fe,Zn,Mn)S
2.CB.55aCubaniteCuFe2S3
2.CB.55bIsocubaniteCuFe2S3
2.CB.60PicotpauliteTlFe2S3
2.CB.60RaguiniteTlFeS2
2.CB.65ArgentopyriteAgFe2S3
2.CB.65SternbergiteAgFe2S3
2.CB.70SulvaniteCu3VS4
2.CB.75VulcaniteCuTe
2.CB.80EmpressiteAgTe
2.CB.85MuthmanniteAuAgTe2

Related Minerals - Hey's Chemical Index of Minerals Grouping

6.1.1KuramiteCu3SnS4
6.1.2MohiteCu2SnS3
6.1.3VelikiteCu2HgSnS4
6.1.4HemusiteCu6SnMoS8
6.1.5KiddcreekiteCu6SnWS8
6.1.6StanniteCu2FeSnS4
6.1.7RhodostanniteCu2FeSn3S8
6.1.8MawsoniteCu6Fe2SnS8
6.1.9ChatkaliteCu6FeSn2S8
6.1.10FerrokësteriteCu2(Fe,Zn)SnS4
6.1.11KësteriteCu2ZnSnS4
6.1.12StannoiditeCu+6Cu2+2(Fe2+,Zn)3Sn2S12
6.1.13ČernýiteCu2(Cd,Zn,Fe)SnS4
6.1.14VincienniteCu+7Cu2+3Fe2+2Fe3+2Sn(As,Sb)S16
6.1.15PirquitasiteAg2ZnSnS4
6.1.17Teallite(Pb,Sn)SnS2
6.1.18FranckeiteFe2+(Pb,Sn2+)6Sn4+2Sb2S14
6.1.19LévyclauditePb8Sn7Cu3(Bi,Sb)3S28
6.1.20CylindritePb3Sn4FeSb2S14
6.1.21PotosíitePb6Sn3FeSb3S16
6.1.22Sakuraiite(Cu,Zn,Fe)3(In,Sn)S4
6.1.23Petrukite(Cu,Fe,Zn,Ag)3(Sn,In)S4
6.1.24Incaite(Pb,Ag)4Sn4FeSb2S15

Related Minerals - Dana Grouping (8th Ed.)

2.9.2.1StanniteCu2FeSnS4
2.9.2.2ČernýiteCu2(Cd,Zn,Fe)SnS4
2.9.2.3BriartiteCu2(Fe,Zn)GeS4
2.9.2.4KuramiteCu3SnS4
2.9.2.5Sakuraiite(Cu,Zn,Fe)3(In,Sn)S4
2.9.2.7PirquitasiteAg2ZnSnS4
2.9.2.8VelikiteCu2HgSnS4
2.9.2.9KësteriteCu2ZnSnS4
2.9.2.10FerrokësteriteCu2(Fe,Zn)SnS4

Other Information

Health Risks:
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:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Caye R, Laurent Y, Picot P, Pierrot R, Lévy C (1968) La hocartite, Ag2SnFeS4, une nouvelle espèce minérale. Bulletin de la Société Française de Minéralogie et de Cristallographie 91, 383-387
Fleischer M (1969) New mineral names. American Mineralogist: 54, 573 (abs. ref. 1).

Internet Links for Hocartite

mindat.org URL:
https://www.mindat.org/min-1911.html
Please feel free to link to this page.
Specimens:
The following Hocartite specimens are currently listed for sale on minfind.com.

Localities for Hocartite

This 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.
(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? 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
DE BRODTKORB, Milka K. Precious metaltellurides and other Te-bearing minerals in different paragenesis of Argentina: A review. Rev. Asoc. Geol. Argent. [online]. 2009, vol.64, n.3, pp. 365-372.; Paar, W. H., Putz, H., Topa, D., de Brodtkorb, M. K., & Sureda, R. J. (2005, January). Occurrence and paragenesis of tellurium in mineral deposits of Argentina. In Mineral Deposit Research: Meeting the Global Challenge (pp. 1419-1422). Springer Berlin Heidelberg.
Amer.Min.(2000) 85, 1066-1075
Paar, W. H. (2013): Pirquitasit - erstmals Kristalle aus Argentinien zu sehen. Mineralien-Welt 24 (3), 42-43 (in German).
Austria
 
  • Carinthia
    • Kreuzeck group
      • Kreuzeck 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.
Pichler (2009)
Bolivia
 
  • La Paz Department
    • Inquisivi Province
      • Colquiri
unpublished COMIBOL analysis
  • Oruro Department
    • Cercado Province
      • Oruro City
Kempff, O., Paar, W.H., Tawackoli, S.: "Minerales de Bolivia", 115pp (La Paz, 2009); Pastor, M., Pastor, A., Torró, L., Martínez, Á., Artiaga, D., Torres, B., ... & Alfonso, P. (2015) The San José-Itos Mines, Oruro, Bolivia: Structure and Ag-Sn Mineralization. in Mineral Resources in a Sustainable World • 13th SGA Biennial Meeting 2015. Proceedings, Volume 1 pp 327-330
  • Potosí Department
    • Antonio Quijarro Province
      • Agua de Castilla
        • Porco
Kempff, O., Paar, W.H., Tawackoli, S.: "Minerales de Bolivia", 115pp (La Paz, 2009)
    • Chayanta Province
[MinRec 32:469]
    • Cornelio 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
        • Chocaya-Animas (Animas-Chocaya)
[MinRec 32:461]
American Mineralogist: 54, 573
Kempff, O., Paar, W.H., Tawackoli, S.: "Minerales de Bolivia", 115pp (La Paz, 2009)
Kempff, O., Paar, W.H., Tawackoli, S.: "Minerales de Bolivia", 115pp (La Paz, 2009)
Salomon Rivas y Federico Ahlfeld (1998) Los Minerales de Bolivia y sus Parajes. (Santa Cruz)
China
 
  • Guangdong Province
    • Yunfu Prefecture
      • Yuncheng District
Weining Zhou (1994): Mineral Resources and Geology 8(4), 233-244
  • Guangxi Zhuang Autonomous Region
    • Hechi Prefecture
      • Nandan Co.
        • Dachang Sn-polymetallic ore field
Peng, Z., Watanabe, M., Hoshino, K., and Shibata, Y. (1999): Ore mineralogy of tin-polymetallic (Sn-Sb-Fe-Pb-Zn-Cu-Ag) ores in the Dachang tin field, Guangxi, China and their implications for the ore genesis. Neues Jahrbuch für Mineralogie, Abhandlungen 175(2), 125-151.
Peng, Z., Watanabe, M., Hoshino, K., and Shibata, Y. (1999): Ore mineralogy of tin-polymetallic (Sn-Sb-Fe-Pb-Zn-Cu-Ag) ores in the Dachang tin field, Guangxi, China and their implications for the ore genesis. Neues Jahrbuch für Mineralogie, Abhandlungen 175(2), 125-151.
  • Hunan Province
    • Chenzhou Prefecture
      • Guiyang Co.
        • Huangshaping Pb-Zn-polymetallic ore field
Weining Zhou (1994): Mineral Resources and Geology 8(4), 233-244
  • Jiangxi Province
    • Shangrao Prefecture
      • Wannian Co.
Leiming Xu, Hengyu Wu, Ge Bai, and Quanbo He (1993): Acta Mineralogica Sinica 13(3), 254-262; Leiming Xu, Ge Bai, and Quanbo He (1993): Mineral Deposits 12(2), 138-147
  • Yunnan Province
    • Honghe Autonomous Prefecture
      • Mengzi Co.
Xinpei Jiang (1994): Acta Petrologica et Mineralogica 13(5), 278-284
France
 
  • Auvergne-Rhône-Alpes
    • Cantal
      • Massiac
        • Molèdes
? Bull. Soc. fr. Min. Crist. (1968) 91, 383-387
Germany
 
  • Bavaria
    • Upper Palatinate
      • Leonberg
        • Pfaffenreuth
Weiss: "Mineralfundstellen, Deutschland West", Weise (Munich), 1990
Japan
 
  • Hokkaido
    • Sapporo
      • Minami-ku
Kojima et al (1979) Kouzan Chishitsu, 29, 197-206.; Min. Jour. (Japan): 15:222-232.; Eijun Ohta (1991) Polymetallic Mineralization at the Toyoha Mine, Hokkaido, Japan. Mining Geology 41:279-295
  • Honshu Island
    • Chubu Region
      • Gifu Prefecture
        • Hida City
Nitta & Akiyama (1981) Kouzan Chishitsu Tokubetsugo, 10, 175-192.
Kyrgyzstan
 
  • Talas Oblast
    • Tallas Alatan
Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
Peru
 
  • Ancash Department
    • Bolognesi Province
      • Huallanca District
        • Huallanca
Econ Geol (1985) 80:416-478
Russia
 
  • Eastern-Siberian Region
    • Sakha Republic (Saha Republic; Yakutia)
[World of Stones 12:49]
      • Sarychev Range
G. N. Gamyanin et al. (2001) Geology of Ore Deposits, 43, 442–467; Mills S.J., Kartashov P.M., Gamyanin G.N., Whitfield P.S., Kern A., Guerault H., Kampf A.R., Raudsepp M. (2011) Fluorocronite, the natural analogue of β-PbF2, from the Saha Republic, Russian Federation. European Journal of Mineralogy, 23, 695-700.
Slovakia
 
  • Prešov Region
    • Prešov Co.
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  
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