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Hocartite

A valid IMA mineral species
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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.

Unique IdentifiersHide

Mindat ID:
1911
Long-form identifier:
mindat:1:1:1911:4
GUID
(UUID V4):
a8978da5-83c3-4f19-84ef-4cc4e4ee9a45

Classification of HocartiteHide

Approved
Approval year:
1967
First published:
1968
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
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:
WavelengthR1R2
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%

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 HocartiteHide

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

Crystallography of HocartiteHide

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 DiffractionHide

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

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:
Reference:
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.

Synonyms of HocartiteHide

Other Language Names for HocartiteHide

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

Relationship of Hocartite to other SpeciesHide

Member of:
Other Members of this group:
BriartiteCu2(Fe,Zn)GeS4Tet.
ČernýiteCu2(Cd,Zn,Fe)SnS4Tet. 4 2m : I4 2m
FamatiniteCu3SbS4Tet. 4 2m : I4 2m
FerrokësteriteCu2FeSnS4Tet. 4 : I4
Kësterite Cu2ZnSnS4Tet. 4 : I4
KeutschiteCu2AgAsS4Tet. 4 2m : I4 2m
KuramiteCu3SnS4Tet. 4 2m : I4 2m
LuzoniteCu3AsS4Tet. 4 2m : I4 2m
OmariniiteCu8Fe2ZnGe2S12Orth. 2 2 2 : I2 2 2
PermingeatiteCu3SbSe4Tet. 4 2m : I4 2m
Petrukite(Cu,Fe,Zn,Ag)3(Sn,In)S4Orth. mm2 : Pmn21
PirquitasiteAg2ZnSnS4Tet. 4 : I4
RichardsiteZn2CuGaS4Tet. 4 2m : I4 2m
StanniteCu2FeSnS4Tet. 4 2m : I4 2m
StannoiditeCu+6Cu2+2(Fe2+,Zn)3Sn2S12Orth. 2 2 2 : I2 2 2
UM1984-30-S:CuFeSnCu2Fe2Sn3S7
Unnamed (Cu-Zn-In Sulphide)CuZn2InS4
VelikiteCu2HgSnS4Tet. 4 : I4
ZincobriartiteCu2(Zn,Fe)(Ge,Ga)S4Tet. 4 2m : I4 2m
Forms a series with:

Common AssociatesHide

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

Related Minerals - Strunz-mindat GroupingHide

2.CB.AgmantiniteAg2MnSnS4Orth.
2.CB.RichardsiteZn2CuGaS4Tet. 4 2m : I4 2m
2.CB.GachingiteAu(Te1-xSex)Orth. mmm (2/m 2/m 2/m)
2.CB.TolstykhiteAu3S4Te6Tric. 1 : P1
2.CB.HanswilkeiteKFeS2Mon. 2/m : B2/b
2.CB.AuroselenideAuSeMon. 2/m : B2/m
2.CB.Ruizhongite(Ag2◻)Pb3Ge2S8Iso. 4 3m : I4 3d
2.CB.OkruginiteCu2SnSe3Mon. m : Bb
2.CB.05aColoradoiteHgTeIso. 4 3m : F4 3m
2.CB.05aHawleyiteCdSIso. 4 3m : F4 3m
2.CB.05aMetacinnabarHgSIso. 4 3m : F4 3m
2.CB.05cPolhemusite(Zn,Hg)STet.
2.CB.05bSakuraiite(Cu,Zn,Fe)3(In,Sn)S4 Iso.
2.CB.05aSphaleriteZnSIso. 4 3m : F4 3m
2.CB.05aStilleiteZnSeIso. 4 3m : F4 3m
2.CB.05aTiemanniteHgSeIso. 4 3m : F4 3m
2.CB.05UM1998-15-S:CuFeZnCu2Fe3Zn5S10
2.CB.05aRudashevskyite(Fe,Zn)SIso. 4 3m : F4 3m
2.CB.05aIshiharaite(Cu,Ga,Fe,In,Zn)SIso. 4 3m : F4 3m
2.CB.07aShenzhuangiteNiFeS2Tet. 4 2m : I4 2d
2.CB.07aUnnamed (Cu-Mn-Sn Sulpide)Cu2MnSnS4
2.CB.10aChalcopyriteCuFeS2Tet. 4 2m : I4 2d
2.CB.10aEskeborniteCuFeSe2Tet. 4 2m : P4 2c
2.CB.10aGalliteCuGaS2Tet. 4 2m : I4 2d
2.CB.10bHaycockiteCu4Fe5S8Orth. 2 2 2
2.CB.10aLenaiteAgFeS2Tet. 4 2m : I4 2d
2.CB.10bMooihoekiteCu9Fe9S16Tet. 4 2m : P4 2m
2.CB.10bPutoraniteCu1.1Fe1.2S2Iso. m3m (4/m 3 2/m) : Pn3m
2.CB.10aRoquesiteCuInS2Tet. 4 2m : I4 2d
2.CB.10bTalnakhiteCu9(Fe,Ni)8S16Iso. 4 3m : I4 3m
2.CB.10aLaforêtiteAgInS2Tet. 4 2m : I4 2d
2.CB.10aUnnamed (Cu-Zn-In Sulphide)CuZn2InS4
2.CB.10aUM1984-30-S:CuFeSnCu2Fe2Sn3S7
2.CB.10cOmariniiteCu8Fe2ZnGe2S12Orth. 2 2 2 : I2 2 2
2.CB.15aČernýiteCu2(Cd,Zn,Fe)SnS4Tet. 4 2m : I4 2m
2.CB.15aFerrokësteriteCu2FeSnS4Tet. 4 : I4
2.CB.15aIdaiteCu5FeS6Hex.
2.CB.15aKësterite Cu2ZnSnS4Tet. 4 : I4
2.CB.15aKuramiteCu3SnS4Tet. 4 2m : I4 2m
2.CB.15bMohiteCu2SnS3Mon.
2.CB.15aPirquitasiteAg2ZnSnS4Tet. 4 : I4
2.CB.15aStanniteCu2FeSnS4Tet. 4 2m : I4 2m
2.CB.15cStannoiditeCu+6Cu2+2(Fe2+,Zn)3Sn2S12Orth. 2 2 2 : I2 2 2
2.CB.15aVelikiteCu2HgSnS4Tet. 4 : I4
2.CB.15cUM2006-11-S:CuFeGeZnCu8(Fe,Zn)3Ge2S12 (?)
2.CB.17a vArsenic-bearing RenieriteCu11GeAsFe4S16
2.CB.20ChatkaliteCu6FeSn2S8Tet. 4 2m : P4m2
2.CB.20MawsoniteCu6Fe2SnS8Tet. 4 2m : P4m2
2.CB.30Argyropyritenear Ag2Fe7S11
2.CB.30ColusiteCu13VAs3S16Iso. 4 3m : P4 3n
2.CB.30GermaniteCu13Fe2Ge2S16Iso. 4 3m : P4 3n
2.CB.30GermanocolusiteCu26V2(Ge,As)6S32Iso. 4 3m : P4 3m
2.CB.30NekrasoviteCu26V2(Sn,As,Sb)6S32Iso. 4 3m : P4 3n
2.CB.30StibiocolusiteCu13V(Sb,Sn,As)3S16Iso. 4 3m : P4 3m
2.CB.30Ovamboite Cu20(Fe,Cu,Zn)6W2Ge6S32Iso. 4 3m : P4 3n
2.CB.30MaikainiteCu20(Fe,Cu)6Mo2Ge6S32Iso. m3m (4/m 3 2/m)
2.CB.30FrieseiteAg2Fe5S8 (?)
2.CB.35aHemusiteCu6SnMoS8Iso.
2.CB.35aKiddcreekiteCu6SnWS8Iso. 4 3m : F4 3m
2.CB.35aPolkovicite(Fe,Pb)3(Ge,Fe)1-xS4Iso.
2.CB.35aRenierite(Cu1+,Zn)11Fe4(Ge4+,As5+)2S16Tet. 4 2m : P4 2c
2.CB.35aVincienniteCu+7Cu2+3Fe2+2Fe3+2Sn(As,Sb)S16Tet.
2.CB.35aMorozeviczite(Pb,Fe)3Ge1-xS4Iso.
2.CB.35bCatamarcaiteCu6GeWS8Hex. 6mm : P63mc
2.CB.40LautiteCuAsSOrth. mmm (2/m 2/m 2/m) : Pnma
2.CB.42LingbaoiteAgTe3Trig. 3m : R3m
2.CB.45CadmoseliteCdSeHex. 6mm : P63mc
2.CB.45GreenockiteCdSHex. 6mm : P63mc
2.CB.45Wurtzite(Zn,Fe)SHex. 6mm : P63mc
2.CB.45RambergiteMnSHex. 6mm : P63mc
2.CB.45Buseckite(Fe,Zn,Mn)SHex. 6mm : P63mc
2.CB.45MaletoyvayamiteAu3Se4Te6Tric. 1 : P1
2.CB.47MurchisiteCr5S6Trig. 3m (3 2/m) : P3 1c
2.CB.50ZincselenideZnSe
2.CB.50WassoniteTiSTrig. 3m (3 2/m) : R3m
2.CB.52DzhezkazganiteReMoCu2PbS6 ?Trig. 3m : R3m
2.CB.55aCubaniteCuFe2S3Orth. mmm (2/m 2/m 2/m)
2.CB.55bIsocubaniteCuFe2S3Iso. m3m (4/m 3 2/m) : Fm3m
2.CB.60PicotpauliteTlFe2S3Orth. mmm (2/m 2/m 2/m) : Cmcm
2.CB.60RaguiniteTlFeS2Orth.
2.CB.65ArgentopyriteAgFe2S3Mon. 2/m
2.CB.65SternbergiteAgFe2S3Orth. mmm (2/m 2/m 2/m)
2.CB.70SulvaniteCu3VS4Iso. 4 3m : P4 3m
2.CB.75VulcaniteCuTeOrth. mmm (2/m 2/m 2/m)
2.CB.80EmpressiteAgTeOrth. mmm (2/m 2/m 2/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

Reference List:

Localities for HocartiteHide

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.

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
Austria
 
  • Carinthia
    • Spittal an der Drau Disdrict
      • Greifenburg
    • Spittal an der Drau District
      • Greifenburg
Bolivia
 
  • La Paz
    • Inquisivi Province
      • Colquiri
  • Oruro
    • Cercado Province
      • Oruro
    • Pantaleón Dalence Province
  • Potosí
    • Antonio Quijarro Province
      • Porco Municipality
        • Agua de Castilla
          • Porco
    • Chayanta Province
      • Colquechaca Municipality
    • Cornelio Saavedra Province
      • Machacamarca mining district (Colavi mining district)
        • Colavi subdistrict
    • Sud Chichas Province
      • Atocha Municipality
        • Chocaya-Animas mining district (Animas-Chocaya mining district)
China
 
  • Guangdong
    • Yunfu
      • Yuncheng District
  • Guangxi
    • Hechi
      • Nandan County
        • Dachang Sn-polymetallic ore field
  • Hunan
    • Chenzhou
      • Guiyang Co.
        • Huangshaping Pb-Zn-polymetallic ore field
  • Jiangxi
    • Shangrao
      • Wannian Co.
  • Yunnan
    • Honghe
      • Mengzi City
France
 
  • Auvergne-Rhône-Alpes
    • Cantal
      • Saint-Flour
        • Molèdes
Germany
 
  • Bavaria
    • Upper Palatinate
      • Tirschenreuth District
        • Leonberg
          • Pfaffenreuth
Japan
 
  • Gifu Prefecture
    • Hida City
  • Hokkaidō Prefecture
    • Ishikari Subprefecture
      • Sapporo City
        • Minami-ku
Kyrgyzstan
 
  • Talas Region
    • Tallas Alatan
Peru
 
  • Ancash
    • Bolognesi Province
      • Huallanca District
        • Huanzala
Russia
 
    • Sarychev Range
Slovakia
 
  • Prešov Region
    • Prešov District
      • Zlatá Baňa
USA
 
  • Arizona
    • Cochise County
  • Nevada
    • Lander County
      • Lewis Mining District
 
Mineral and/or Locality  
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