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Cervelleite

A valid IMA mineral species
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About CervelleiteHide

05428950014946937864113.jpg
Bernard Cervelle
Formula:
Ag4TeS
Colour:
dark grey, black
Lustre:
Metallic
Hardness:
2
Crystal System:
Monoclinic
Member of:
Name:
In honor of French mineralogist Dr. Bernard Cervelle (born 1940), Professor at the University of Paris and former IMA Chairman of the Commission on Ore Mineralogy, for his "contributions to ore mineralogy, microscope-photometry, and the development of quantitative ore microscopy".
The Te analogue of aguilarite.

A Cu-rich variety (up to 6 wt.% Cu) has been reported (Helmy, 1999; see also Novoselov et al., 2006; Voudouris et al., 2011; Kubač et al., 2018).
Novoselov et al. (2006) assume the existence of several new cervelleite-related phases ("Broad variations in composition and physical properties of cervelleite-like sulfotellurides allow the supposition of the presence of several, as yet unnamed mineral species, which can be distinguished by Cu contents, Te/S ratios, and presumably by crystal structure.").

Stoichiometrically identical but optically different phase is known: UM1976-12-S:AgTe. There are many other unnamed Ag-Te-S phases, e.g., 'UM1976-12-S:AgTe' and 'UM2003-17-S:AgTe'.


Unique IdentifiersHide

Mindat ID:
937
Long-form identifier:
mindat:1:1:937:1
GUID
(UUID V4):
dcc0e773-47a3-4784-ae39-714d7360ca4e

IMA Classification of CervelleiteHide

Classification of CervelleiteHide

2.BA.60

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
B : Metal Sulfides, M: S > 1: 1 (mainly 2: 1)
A : With Cu, Ag, Au
3.2.8

3 : Sulphides, Selenides, Tellurides, Arsenides and Bismuthides (except the arsenides, antimonides and bismuthides of Cu, Ag and Au, which are included in Section 1)
2 : Sulphides etc. of Ag

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
CvlIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43
CvlThe 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 CervelleiteHide

Metallic
Colour:
dark grey, black
Hardness:
Cleavage:
None Observed

Optical Data of CervelleiteHide

Reflectivity:
WavelengthR
400nm39.8%
440nm40.1%
480nm39.7%
520nm38.9%
560nm37.8%
600nm36.8%
640nm35.8%
680nm34.9%
700nm34.4%

Reflectance graph
Graph shows reflectance levels at different wavelengths (in nm). Top of box is 100%. Peak reflectance is 40.1%.
Colour in reflected light:
Pale blue to pale green

Chemistry of CervelleiteHide

Mindat Formula:
Ag4TeS

Crystallography of CervelleiteHide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Cell Parameters:
a = 4.2696(4) Å, b = 6.9761(5) Å, c = 8.0423(7) Å
β = 100.332(6)°
Ratio:
a:b:c = 0.612 : 1 : 1.153
Unit Cell V:
235.66 ų
Comment:
Space group P21/n. Originally considered to be cubic, with a = 14.03 A.

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
5.00 Å(very very strong)
4.24 Å(very strong)
6.29 Å(strong)
3.766 Å(moderately strong)
4.64 Å(moderate)
5.74 Å(weak)
2.596 Å(weak)
Comments:
Moctezuma mine, Mexico. Data from the type description.

Geological EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest Age (Ga)
High-𝑇 alteration and/or metamorphism
33 : Minerals deposited by hydrothermal metal-rich fluids (see also [#12])

Type Occurrence of CervelleiteHide

General Appearance of Type Material:
Thin rims around acanthite in hessite, blueish- to greenish white in fresh polished sections.
Place of Conservation of Type Material:
Natural History Museum, London, United Kingdom, numbers BM 1985,354, E. 1161 (holotype).
National Museum of Natural History, Washington, D.C., USA, number 165226 (type).
Geological Setting of Type Material:
Fracture fillings in highly altered silicified vitrophyre.
Associated Minerals at Type Locality:
Reference:
Criddle, A.J., Chisholm, J.E., Stanley, C.J. (1989) Cervelleite, Ag4TeS, a new mineral from the Bambolla mine, Mexico, and a description of a photo-chemical reaction involving cervelleite, acanthite and hessite. European Journal of Mineralogy: 1: 371-380.

Synonyms of CervelleiteHide

Other Language Names for CervelleiteHide

German:Cervelleit
Simplified Chinese:硫碲银矿
Spanish:Cervelleita

Relationship of Cervelleite to other SpeciesHide

Member of:
Other Members of this group:
AcanthiteAg2SMon. 2/m : P21/m
AguilariteAg4SeSMon. 2/m

Common AssociatesHide

Associated Minerals Based on Photo Data:
3 photos of Cervelleite associated with Benleonardite[Ag6(Sb,As)2S6Te][Ag9Cu(S,Te)2Te2]
3 photos of Cervelleite associated with HessiteAg2Te

Related Minerals - Strunz-mindat GroupingHide

2.BA.Orileyite(Fe,Cu)2As
2.BA.AlburniteAg8GeTe2S4Iso.
2.BA.DzierżanowskiteCaCu2S2Trig. 3m (3 2/m) : P3m1
2.BA.MakotoiteAg12(Cu3Au)S8Trig. 3m (3 2/m) : R3c
2.BA.XuwenyuaniteAg9Fe3+Te2S4Iso. 4 3m : F4 3m
2.BA.05ChalcociteCu2SMon. 2/m : P21/b
2.BA.05DjurleiteCu31S16Mon. 2/m
2.BA.05GeeriteCu8S5Trig. 3
2.BA.05RoxbyiteCu9S5Tric. 1 : P1
2.BA.10AniliteCu7S4Orth. mmm (2/m 2/m 2/m) : Pnma
2.BA.10DigeniteCu9S5Trig. 3m (3 2/m) : R3m
2.BA.15BorniteCu5FeS4Orth. mmm (2/m 2/m 2/m) : Pbca
2.BA.20BellidoiteCu2SeTet. 4/m : P42/n
2.BA.20BerzelianiteCu2-xSe (x ≈ 0.12)Iso. m3m (4/m 3 2/m) : Fm3m
2.BA.25AthabascaiteCu5Se4Orth.
2.BA.25UmangiteCu3Se2Tet. 4 2m : P4 21m
2.BA.30RickarditeCu7Te5Orth. mmm (2/m 2/m 2/m) : Pmmn
2.BA.30WeissiteCu2-xTeHex. 6/mmm (6/m 2/m 2/m) : P6/mmm
2.BA.35AcanthiteAg2SMon. 2/m : P21/m
2.BA.35SpryiteAg8(As3+0.5As5+0.5)S6Orth. mm2 : Pna21
2.BA.40MckinstryiteAg5-xCu3+xS4Orth. mmm (2/m 2/m 2/m) : Pnma
2.BA.40StromeyeriteAgCuSOrth. mmm (2/m 2/m 2/m)
2.BA.40dUM2003-13-S:AgAuCuAg6AuCu2S5
2.BA.42HoneaiteAu3TlTe2 Orth. mmm (2/m 2/m 2/m) : Pbcm
2.BA.45JalpaiteAg3CuS2Tet. 4/mmm (4/m 2/m 2/m) : I41/amd
2.BA.45KuriliteAg8Te3SeTrig. 3 : R3
2.BA.45SelenojalpaiteAg3CuSe2Tet. 4/mmm (4/m 2/m 2/m) : I41/amd
2.BA.47Spiridonovite(Cu1-xAgx)2TeTrig. 3m (3 2/m) : P3c1
2.BA.50EucairiteAgCuSeOrth.
2.BA.50WuyanzhiiteCu2STet. 4 2 2 : P43 21 2
2.BA.52ArgentiteAg2SIso.
2.BA.55AguilariteAg4SeSMon. 2/m
2.BA.55NaumanniteAg2SeOrth. 2 2 2 : P21 21 21
2.BA.60HessiteAg2TeMon. 2/m : P21/b
2.BA.60ChenguodaiteAg9Fe3+Te2S4Orth.
2.BA.65Henryite(Cu,Ag)3+xTe2 , with x ~ 0.40 Iso. m3m (4/m 3 2/m) : Fd3c
2.BA.65StütziteAg5-xTe3, x = 0.24-0.36Hex. 6 : P6
2.BA.70ArgyroditeAg8GeS6Orth. mm2 : Pna21
2.BA.70CanfielditeAg8SnS6Orth. mm2
2.BA.70Putzite(Cu4.7Ag3.3)GeS6Iso. 4 3m : F4 3m
2.BA.75FischesseriteAg3AuSe2Iso. 4 3 2 : I41 3 2
2.BA.75Penzhinite(Ag,Cu)4Au(S,Se)4Hex. 6 2 2 : P63 2 2
2.BA.75PetrovskaiteAuAgSMon.
2.BA.75PetziteAg3AuTe2Iso. 4 3 2 : I41 3 2
2.BA.75UytenbogaardtiteAg3AuS2Trig. 3m (3 2/m) : R3c
2.BA.80Bezsmertnovite(Au,Ag)4Cu(Te,Pb)Orth.
2.BA.80BilibinskitePbCu2Au3Te2Iso.
2.BA.80Bogdanovite(Au,Te,Pb)3(Cu,Fe)Iso.

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 CervelleiteHide

References for CervelleiteHide

Reference List:

Localities for CervelleiteHide

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
 
  • Catamarca Province
    • Belén Department
      • Hualfín
Márquez-Zavalía et al. (2016)
  • Chubut Province
    • Gastre Department
DE BRODTKORB +1 other reference
BRODTKORB +3 other references
  • Mendoza Province
    • Malargüe Department
      • Agua Escondida District
Ana Cecilia Mugas-Lobos et al. (2011) +1 other reference
  • Río Negro Province
    • Valcheta Department
      • San Martin pluton
DE BRODTKORB +3 other references
Australia
 
  • Queensland
    • Whitsunday Region
Sahlström et al. (2017)
  • Western Australia
    • Coolgardie Shire
      • Kambalda
        • Kambalda Nickel mines
          • Moran Mine
Simon (2019)
Bolivia
 
  • Oruro
    • Pantaleón Dalence Province
      • Huanuni
Cacho et al. (2015)
Cacho et al. (2019)
Brazil
 
  • Rondônia
    • Ariquemes
Nascimento et al. (2017)
Bulgaria
 
  • Kardzhali Province
    • Ardino Municipality
      • Enyovche
Dobrev et al. (2002) +1 other reference
  • Smolyan Province
    • Nedelino Municipality
      • Nedelino ore field
Dobrev et al. (2002)
Canada
 
  • Ontario
    • Greater Sudbury
      • Wisner Township
Péntek et al. (2013)
China
 
  • Anhui
    • Chuzhou
      • Langya District
Weining Zhou (1994) +1 other reference
  • Guangdong
    • Shaoguan
      • Qujiang District
Ye et al. (2014)
  • Hubei
    • Huangshi
      • Daye Co.
Li et al. (2023)
  • Jiangsu
    • Nanjing
      • Qixia District
Weining Zhou (1994) +1 other reference
  • Liaoning
    • Huludao
      • Jianchang County
Weining Zhou (1994) +1 other reference
  • Qinghai
    • Haixi Mongol and Tibetan Autonomous Prefecture
      • Da Qaidam (Dachaidan Co.)
        • Xitieshan
Weining Zhou (1994)
  • Shandong
    • Yantai
      • Zhaoyuan City
Xiang-Ping Gu et al. (2003)
Egypt
 
  • Red Sea Governorate
Zoheir et al. (2022)
Faisal et al. (2021)
Canadian Mineralogist Feb. 1999 +2 other references
Finland
 
  • Kainuu
    • Suomussalmi
Chernet
Greece
 
  • Central Greece
    • Euboea
      • Karystos
Panagiotis Christos Voudouris et al. (2011)
  • Eastern Macedonia and Thrace
    • Evros
      • Alexandroupoli
        • Kirki Mines
Triantafyllidis (2019)
  • South Aegean
    • Tinos
      • Tinos Island
Economic Geology 102 (2007) +1 other reference
Greenland
 
  • Sermersooq
    • Arsuk Fjord
      • Ivigtut stock
Karup-Møller et al. (1979)
Japan
 
  • Shizuoka Prefecture
    • Shimoda City
      • Rendaiji
Shimizu et al. (1994) +1 other reference
Mexico (TL)
 
  • Sonora
    • Moctezuma Municipality
      • Moctezuma
Criddle et al. (1989)
Braith et al. (2001) +2 other references
Poland
 
  • Lower Silesian Voivodeship
    • Karkonosze County
      • Gmina Janowice Wielkie
        • Janowice Wielkie
Kozłowski et al. (2022)
Portugal
 
  • Viseu
    • Vila Nova de Paiva
Dias et al. (2009)
Romania
 
  • Alba County
    • Roșia Montană
Tamas +5 other references
  • Bihor County
    • Nucet
Cook et al. (2002) +2 other references
  • Caraş-Severin County
Cook et al. (2002)
Cook et al. (2003) +2 other references
  • Hunedoara County
    • Buceș
      • Stănija
Cook et al. (2003) +2 other references
    • Certeju de Sus
Dincă et al. (2018)
Russia
 
  • Bashkortostan
    • Baymaksky District
Maslennikov et al. (2013)
Vinokurov et al. (2010)
Maslennikov et al. (2013)
  • Chelyabinsk Oblast
    • Verkhneuralsky District
Novoselov et al. (2006)
  • Chukotka Autonomous Okrug
    • Anadyrsky District
Zhuravkova et al. (2019)
  • Irkutsk Oblast
    • Bodaybinsky District
      • Bodaibo
        • Lena Gold District
          • Kropotkinsky ore cluster
www.igem.ru (2001) +1 other reference
  • Murmansk Oblast
    • Olenegorsk
Bazai et al. (2009)
    • Voron'i Tundry
A. A. Kalinin et al. (2016)
  • Republic of Karelia
Ivashchenko et al. (2011, September) +1 other reference
    • Pitkyarantsky District
      • Kitelya
Ivashchenko et al. (2011, September)
  • Sakha
    • Aldan
      • Tyrkandinsky
Kondratieva et al. (2021)
Kondratieva et al. (2021)
    • Aldansky District
[[1]]Kondratieva et al. (2023)
[[1]]Kondratieva et al. (2023)
  • Sverdlovsk Oblast
    • Karpinsk Urban Okrug
Maslennikov et al. (2013)
  • Tuva
    • Kyzylsky District
      • Kyzyl-Tashtyg ore area
Ankusheva et al. (2017) +1 other reference
  • Zabaykalsky Krai
    • Alexandrovo-Zavodsky District
Kovalenker et al. (2011)
Юргенсон (2022)
Slovakia
 
  • Banská Bystrica Region
    • Žarnovica District
      • Hodruša-Hámre
        • Hodruša-Hámre mines
Berkh et al. (2014)
Alexander Kubač et al. (2018)
Berkh et al. (2014)
  • Prešov Region
    • Prešov District
      • Zlatá Baňa
Duda et. all.
Sweden
 
  • Värmland County
    • Grums
      • Värmskog
Nysten
Switzerland
 
  • Grisons
    • Surselva Region
      • Tujetsch
        • Val Curnera
Stalder et al. (1998)
USA
 
  • Arizona
    • Cochise County
      • Tombstone Mining District
EDS confirmed by Bob Housley.
  • California
    • San Bernardino County
      • Silver Lake Mining District
        • Soda Mountains
          • Baker
EDS confirmed by Bob Housley.
Housley R.
  • Colorado
    • Boulder County
      • Ward Mining District
Eckel et al. (1997)
  • Montana
    • Madison County
      • Norwegian Mining District (Whitehall Mining District)
Mineralogical Magazine 1996 60 : 871-876
  • Nevada
    • Lincoln County
      • Delamar Mining District
Hayes et al. (2019)
Uzbekistan
 
  • Tashkent
    • Chatkal-Kuraminskii Range
Rustam Koneev et al. (2005)
 
Mineral and/or Locality  
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