Vote for your favorite mineral in #MinCup26! - Azurite vs. Smithsonite
It's carbonate-vs-carbonate to kick off Mineral Cup 2026 with copper-rich Azurite against zinc-rich Smithsonite.
Log InRegister
Quick Links : The Mindat ManualThe Rock H. Currier Digital LibraryMindat Newsletter [Free Download]
Home PageAbout MindatThe Mindat ManualHistory of MindatCopyright StatusWho We AreContact UsAdvertise on Mindat
Donate to MindatCorporate SponsorshipSponsor a PageSponsored PagesMindat AdvertisersAdvertise on Mindat
Learning CenterWhat is a mineral?The most common minerals on earthInformation for EducatorsMindat ArticlesThe ElementsThe Rock H. Currier Digital LibraryGeologic TimeExplore Fossils
Minerals by PropertiesMinerals by ChemistryMineral Visual ExplorerAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
Mining CompaniesStatisticsUsersMineral MuseumsClubs & OrganizationsMineral Shows & EventsThe Mindat DirectoryDevice SettingsThe Mineral QuizTime Machine
Photo SearchPhoto GalleriesSearch by ColorPhoto Colour ExplorerNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day GalleryPhotography

Hocartite

A valid IMA mineral species
This page is currently not sponsored. Click here to sponsor this page.
Hide all sections | Show all sections

About HocartiteHide

Formula:
Ag2(Fe2+,Zn)SnS4
Colour:
Brownish-grey
Lustre:
Metallic
Hardness:
4
Specific Gravity:
4.77 (Calculated)
Crystal System:
Tetragonal
Member of:
Name:
Named in honor of Raymond Hocart (21 May 1896, Kabylie, Algeria - 5 December 1983), Professor of Mineralogy, University of Paris, France.

Information from https://www.monumentsmenandwomenfnd.org/hocart-lt-col-raymond :

"Hocart served with the French Army during World War II. In September 1945 he was assigned to the headquarters of U.S. Seventh Army as a Restitution Officer for the MFAA. He was charged with locating, identifying, and returning to France scientific materials, archives, and research documents stolen from the University of Strasbourg by the Nazis. Upon the liberation of Alsace by French troops in November 1944, it was estimated that, of the tens of thousands of books belonging to the university, only 600 remained. Hocart traveled throughout the U.S. Zone of Occupation conducting investigations at countless repositories for looted art. He tracked cases of books and archives to Schloss Neuenstein, multiple officers’ clubs, and the Heilbronn and Kochendorf mines. In October 1945 he visited a factory near Bopfingen, Germany, where he discovered 100 cases of scientific instruments along with five cupboards, three tables, and even a stove belonging to the university’s laboratory.

Following his involvement with the MFAA, Hocart returned to France and became Professor of Mineralogy at the University of Paris. He became well-known for his continuing studies of crystals and minerals. His numerous articles and books on the subject include Les Cristaux (1968) and Les Minéraux, Qu’est-ce Que C’est? (1978). In January 1968, The Commission on New Minerals and Mineral Names of the International Mineralogical Association (IMA) voted to honor Hocart by naming a new mineral after him."

Unique IdentifiersHide

Mindat ID:
1911
Long-form identifier:
mindat:1:1:1911:4

IMA Classification of HocartiteHide

Classification of HocartiteHide

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

Mineral SymbolsHide

As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

Please only use the official IMA–CNMNC symbol. Older variants are listed for historical use only.

SymbolSourceReference for Standard
HocIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43
HocThe Canadian Mineralogist (2019)The Canadian Mineralogist (2019) The Canadian Mineralogist list of symbols for rock- and ore-forming minerals (December 30, 2019). download

Physical Properties of HocartiteHide

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 HocartiteHide

Type:
Uniaxial (-)
Anisotropism:
distinct orangish to greenish
Reflectivity:
WavelengthR1 (%)R2 (%)
400nm27.0%27.7%
420nm26.5%27.2%
440nm26.0%26.7%
460nm25.5%26.3%
480nm25.2%26.0%
500nm24.8%25.7%
520nm24.7%25.5%
540nm24.5%25.4%
560nm24.4%25.3%
580nm24.5%25.4%
600nm24.6%25.5%
620nm24.8%25.6%
640nm25.2%25.2%
660nm25.4%24.8%
680nm24.8%24.4%
700nm23.7%24.5%


Graph shows reflectance levels at different wavelengths (in nm). 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

Chemistry of HocartiteHide

Mindat Formula:
Ag2(Fe2+,Zn)SnS4
Element Weights:
Element% weight
Ag41.604 %
S24.734 %
Sn22.893 %
Fe10.769 %

Calculated from ideal end-member formula.
Common Impurities:
Zn,Cu

Crystallography of HocartiteHide

Crystal System:
Tetragonal
Class (H-M):
42m - Scalenohedral
Space Group:
I42m
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 DiffractionHide

Geological EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest Age (Ga)
Stage 3b: Earth’s earliest hydrosphere>4.45
12 : Hadean hydrothermal subsurface sulfide deposits (see also #33)
Geological Setting:
In tin veins.

Type Occurrence of HocartiteHide

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 HocartiteHide

Other Language Names for HocartiteHide

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

Relationship of Hocartite to other SpeciesHide

Member of:
Other Members of Stannite Group:
BriartiteCu2FeGeS4Tet.
ČernýiteCu2CdSnS4Tet. 42m : I42m
FamatiniteCu3SbS4Tet. 42m : I42m
FerrokësteriteCu2FeSnS4Tet. 4 : I4
KësteriteCu2ZnSnS4Tet. 4 : I4
KeutschiteCu2AgAsS4Tet. 42m : I42m
KuramiteCu3SnS4Tet. 42m : I42m
LuzoniteCu3AsS4Tet. 42m : I42m
OmariniiteCu8Fe2ZnGe2S12Orth. 222 : I222
PermingeatiteCu3SbSe4Tet. 42m : I42m
Petrukite(Cu,Fe,Zn,Ag)3(Sn,In)S4Orth. mm2 : Pmn21
PirquitasiteAg2ZnSnS4Tet. 4 : I4
RichardsiteZn2CuGaS4Tet. 42m : I42m
StanniteCu2FeSnS4Tet. 42m : I42m
StannoiditeCu+6Cu2+2(Fe2+,Zn)3Sn2S12Orth. 222 : I222
'UM1984-30-S:CuFeSn'Cu2Fe2Sn3S7
'Unnamed (Cu-Zn-In Sulphide)'CuZn2InS4
VelikiteCu2HgSnS4Tet. 4 : I4
ZincobriartiteCu2(Zn,Fe)(Ge,Ga)S4Tet. 42m : I42m
Forms a series with:

Common AssociatesHide

Associations Based on Photo Data:
2 photos of Hocartite associated with PyriteFeS2

Related Minerals - Strunz-mindat GroupingHide

2.CB.RichardsiteZn2CuGaS4Tet. 42m : I42m
2.CB.OkruginiteCu2SnSe3Mon. m : Bb
2.CB.HanswilkeiteKFeS2Mon. 2/m : B2/b
2.CB.AuroselenideAuSeMon. 2/m : B2/m
2.CB.Ruizhongite(Ag2◻)Pb3Ge2S8Iso. 43m : I43d
2.CB.AgmantiniteAg2MnSnS4Orth.
2.CB.TolstykhiteAu3S4Te6Tric. 1 : P1
2.CB.GachingiteAu(Te1-xSex)Orth. mmm(2/m2/m2/m)
2.CB.05aHawleyiteCdSIso. 43m : F43m
2.CB.05'UM1998-15-S:CuFeZn'Cu2Fe3Zn5S10
2.CB.05aColoradoiteHgTeIso. 43m : F43m
2.CB.05aMetacinnabarHgSIso. 43m : F43m
2.CB.05aTiemanniteHgSeIso. 43m : F43m
2.CB.05aSphaleriteZnSIso. 43m : F43m
2.CB.05bSakuraiite(Cu,Zn,Fe)3(In,Sn)S4 Iso.
2.CB.05cPolhemusite(Zn,Hg)STet.
2.CB.05aRudashevskyite(Fe,Zn)SIso. 43m : F43m
2.CB.05aStilleiteZnSeIso. 43m : F43m
2.CB.05aIshiharaite(Cu,Ga,Fe,In,Zn)SIso. 43m : F43m
2.CB.07a'Unnamed (Cu-Mn-Sn Sulphide)'Cu2MnSnS4
2.CB.07aShenzhuangiteNiFeS2Tet. 42m : I42d
2.CB.10bTalnakhiteCu9(Fe,Ni)8S16Iso. 43m : I43m
2.CB.10bHaycockiteCu4Fe5S8Orth. 222
2.CB.10aLenaiteAgFeS2Tet. 42m : I42d
2.CB.10aGalliteCuGaS2Tet. 42m : I42d
2.CB.10aRoquesiteCuInS2Tet. 42m : I42d
2.CB.10aEskeborniteCuFeSe2Tet. 42m : P42c
2.CB.10a'UM1984-30-S:CuFeSn'Cu2Fe2Sn3S7
2.CB.10cOmariniiteCu8Fe2ZnGe2S12Orth. 222 : I222
2.CB.10aChalcopyriteCuFeS2Tet. 42m : I42d
2.CB.10a'Unnamed (Cu-Zn-In Sulphide)'CuZn2InS4
2.CB.10bMooihoekiteCu9Fe9S16Tet. 42m : P42m
2.CB.10aLaforêtiteAgInS2Tet. 42m : I42d
2.CB.10bPutoraniteCu1.1Fe1.2S2Iso. m3m(4/m32/m) : Pn3m
2.CB.15aVelikiteCu2HgSnS4Tet. 4 : I4
2.CB.15c'UM2006-11-S:CuFeGeZn'Cu8(Fe,Zn)3Ge2S12 (?)
2.CB.15aKësteriteCu2ZnSnS4Tet. 4 : I4
2.CB.15aPirquitasiteAg2ZnSnS4Tet. 4 : I4
2.CB.15aStanniteCu2FeSnS4Tet. 42m : I42m
2.CB.15cStannoiditeCu+6Cu2+2(Fe2+,Zn)3Sn2S12Orth. 222 : I222
2.CB.15bMohiteCu2SnS3Mon.
2.CB.15aČernýiteCu2CdSnS4Tet. 42m : I42m
2.CB.15aIdaiteCu5FeS6Hex.
2.CB.15aFerrokësteriteCu2FeSnS4Tet. 4 : I4
2.CB.15aKuramiteCu3SnS4Tet. 42m : I42m
2.CB.17a v'Arsenic-bearing Renierite'Cu11GeAsFe4S16
2.CB.20MawsoniteCu6Fe2SnS8Tet. 42m : P4m2
2.CB.20ChatkaliteCu6FeSn2S8Tet. 42m : P4m2
2.CB.30'Frieseite'Ag2Fe5S8 (?)
2.CB.30NekrasoviteCu26V2(Sn,As,Sb)6S32Iso. 43m : P43n
2.CB.30'Argyropyrite'near Ag2Fe7S11
2.CB.30MaikainiteCu20(Fe,Cu)6Mo2Ge6S32Iso. m3m(4/m32/m)
2.CB.30ColusiteCu13VAs3S16Iso. 43m : P43n
2.CB.30GermaniteCu13Fe2Ge2S16Iso. 43m : P43n
2.CB.30GermanocolusiteCu26V2(Ge,As)6S32Iso. 43m : P43m
2.CB.30StibiocolusiteCu13V(Sb,Sn,As)3S16Iso. 43m : P43m
2.CB.30Ovamboite Cu20(Fe,Cu,Zn)6W2Ge6S32Iso. 43m : P43n
2.CB.35aMorozeviczite(Pb,Fe)3Ge1-xS4Iso.
2.CB.35aRenierite(Cu+,Zn)11Fe4(Ge4+,As5+)2S16Tet. 42m : P42c
2.CB.35aHemusiteCu6SnMoS8Iso.
2.CB.35bCatamarcaiteCu6GeWS8Hex. 6mm : P63mc
2.CB.35aVincienniteCu+7Cu2+3Fe2+2Fe3+2Sn(As,Sb)S16Tet.
2.CB.35aKiddcreekiteCu6SnWS8Iso. 43m : F43m
2.CB.35aPolkovicite(Fe,Pb)3(Ge,Fe)1-xS4Iso.
2.CB.40LautiteCuAsSOrth. mmm(2/m2/m2/m) : Pnma
2.CB.42LingbaoiteAgTe3Trig. 3m : R3m
2.CB.45CadmoseliteCdSeHex. 6mm : P63mc
2.CB.45RambergiteMnSHex. 6mm : P63mc
2.CB.45Buseckite(Fe,Zn,Mn)SHex. 6mm : P63mc
2.CB.45MaletoyvayamiteAu3Se4Te6Tric. 1 : P1
2.CB.45GreenockiteCdSHex. 6mm : P63mc
2.CB.45Wurtzite(Zn,Fe)SHex. 6mm : P63mc
2.CB.47MurchisiteCr5S6Trig. 3m(32/m) : P31c
2.CB.50'Zincselenide'ZnSe
2.CB.50WassoniteTiSTrig. 3m(32/m) : R3m
2.CB.52'Dzhezkazganite'ReMoCu2PbS6 ?Trig. 3m : R3m
2.CB.55bIsocubaniteCuFe2S3Iso. m3m(4/m32/m) : Fm3m
2.CB.55aCubaniteCuFe2S3Orth. mmm(2/m2/m2/m)
2.CB.60RaguiniteTlFeS2Orth.
2.CB.60PicotpauliteTlFe2S3Orth. mmm(2/m2/m2/m) : Cmcm
2.CB.65ArgentopyriteAgFe2S3Mon. 2/m
2.CB.65SternbergiteAgFe2S3Orth. mmm(2/m2/m2/m)
2.CB.70SulvaniteCu3VS4Iso. 43m : P43m
2.CB.75VulcaniteCuTeOrth. mmm(2/m2/m2/m)
2.CB.80EmpressiteAgTeOrth. mmm(2/m2/m2/m)
2.CB.85MuthmanniteAuAgTe2Mon. 2/m : P2/m

Other InformationHide

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

Internet Links for HocartiteHide

References for HocartiteHide

Localities for HocartiteHide

Showing 35 localities.

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.
Hide all sections | Show all sections

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for references and further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.
Argentina
 
  • Jujuy Province
    • Rinconada Department
      • Mina Pirquitas
Silver Standard Resources Inc
Slater (2016)
          • San Miguel Open pit
Paar et al. (2000)
Paar (2013)
Austria
 
  • Carinthia
    • Spittal an der Drau Disdrict
      • Greifenburg
Pichler (2009)
    • Spittal an der Drau District
      • Greifenburg
Feitzinger et al. (1995)
Bolivia
 
  • La Paz
    • Inquisivi Province
      • Colquiri
unpublished COMIBOL analysis
  • Oruro
    • Cercado Province
      • Oruro
Kempff et al. (La Paz, 2009) +1 other reference
    • Pantaleón Dalence Province
Franco (2018)
  • Potosí
    • Antonio Quijarro Province
      • Porco Municipality
        • Agua de Castilla
          • Porco
Kempff et al. (La Paz, 2009)
    • Chayanta Province
      • Colquechaca Municipality
Wilson (2001)
    • Cornelio Saavedra Province
      • Tacobamba Municipality
        • Colavi subdistrict
Salomon Rivas y Federico Ahlfeld (1998)
    • Sud Chichas Province
      • Atocha Municipality
        • Chocaya-Animas mining district (Animas-Chocaya mining district)
Wilson (2001)
American Mineralogist: 54
Kempff et al. (La Paz, 2009)
Kempff et al. (La Paz, 2009) +1 other reference
Salomon Rivas y Federico Ahlfeld (1998)
China
 
  • Guangdong
    • Yunfu
      • Yuncheng District
Weining Zhou (1994)
  • Guangxi
    • Hechi
      • Nandan County
Peng et al. (1999)
Peng et al. (1999)
  • Hunan
    • Chenzhou
      • Guiyang Co.
        • Huangshaping Pb-Zn-polymetallic ore field
Weining Zhou (1994)
  • Jiangxi
    • Shangrao
      • Wannian Co.
Leiming Xu et al. (1993) +1 other reference
  • Yunnan
    • Honghe
      • Mengzi City
Xinpei Jiang (1994)
France
 
  • Auvergne-Rhône-Alpes
    • Cantal
      • Saint-Flour
        • Molèdes
? Bull. Soc. fr. Min. Crist. (1968)
Germany
 
  • Bavaria
    • Upper Palatinate
      • Tirschenreuth District
        • Leonberg
          • Pfaffenreuth
Weiß (1990)
Japan
 
  • Gifu Prefecture
    • Hida City
Nitta & Akiyama (1981)
  • Hokkaidō Prefecture
    • Ishikari Subprefecture
      • Sapporo City
        • Minami-ku
Min. Jour. (Japan) +2 other references
Kyrgyzstan
 
  • Talas Region
    • Tallas Alatan
Pekov (1998)
Peru
 
  • Ancash
    • Bolognesi Province
      • Huallanca District
        • Huanzala
Imai et al. (1985) +1 other reference
Russia
 
[World of Stones 12:49]
    • Oymyakonsky District
      • Sarychev Range
Gamyanin G.N. et al. (2001) +1 other reference
Slovakia
 
  • Prešov Region
    • Prešov District
      • Zlatá Baňa
Duda et. all.
USA
 
  • Arizona
    • Cochise County
Graeme (1993)
Graeme (1993) +1 other reference
  • Nevada
    • Lander County
      • Lewis Mining District
Castor et al. (2004)
 
and/or  
Mindat.org® is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization. Mindat® and mindat.org® are registered trademarks of the Hudson Institute of Mineralogy.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2026, except where stated. Most political location boundaries are © OpenStreetMap contributors. Mindat.org relies on the contributions of thousands of members and supporters. Founded in 2000 by Jolyon Ralph and Ida Chau.
Content on this site may not be used to train, fine-tune, or otherwise develop artificial intelligence or machine learning models without prior written permission - see our Terms & Conditions.
To cite: Ralph, J., Von Bargen, D., Martynov, P., Zhang, J., Que, X., Prabhu, A., Morrison, S. M., Li, W., Chen, W., & Ma, X. (2025). Mindat.org: The open access mineralogy database to accelerate data-intensive geoscience research. American Mineralogist, 110(6), 833–844. doi:10.2138/am-2024-9486.
Privacy Policy - Terms & Conditions - Contact Us / DMCA issues - Report a bug/vulnerability Current server date and time: September 1, 2026 11:14:19 Page updated: August 19, 2026 03:35:23
Go to top of page