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Montbrayite

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About MontbrayiteHide

Formula:
(Au,Ag,Sb,Bi,Pb)23(Te,Sb,Bi,Pb)38
Hardness:
Crystal System:
Triclinic
Name:
After the discovery site, the Robb-Montbray mine and Montbray Township.
Compare the chemically similar 'UM1984-41-Te:AuSb'.

The former formula, (Au,Sb)2Te3, was changed due to the IMA 17-F redefinition proposal.


Classification of MontbrayiteHide

Approved, 'Grandfathered' (first described prior to 1959)
Notes:
Redefined by the IMA
Approval History:
IMA 17-F
2.DB.20

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
D : Metal Sulfides, M: S = 3 :4 and 2:3
B : M:S = 2:3
2.11.8.1

2 : SULFIDES
11 : AmBnXp, with (m+n):p = 2:3
3.3.14

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

Physical Properties of MontbrayiteHide

Hardness:
2½ on Mohs scale

Chemical Properties of MontbrayiteHide

Formula:
(Au,Ag,Sb,Bi,Pb)23(Te,Sb,Bi,Pb)38
IMA Formula:
(Au,Sb)2Te3
Common Impurities:
Ag,Pb,Bi,S

Crystallography of MontbrayiteHide

Crystal System:
Triclinic
Cell Parameters:
a = 12.11 Å, b = 13.44 Å, c = 10.8 Å
α = 104.38°, β = 97.5°, γ = 107.93°
Ratio:
a:b:c = 0.901 : 1 : 0.804
Unit Cell V:
1,578.64 ų (Calculated from Unit Cell)

Type Occurrence of MontbrayiteHide

Other Language Names for MontbrayiteHide

German:Montbrayit
Simplified Chinese:亮碲金矿
Spanish:Montbrayita

Related Minerals - Nickel-Strunz GroupingHide

2.DB.05AntimonseliteSb2Se3Orth. mmm (2/m 2/m 2/m)
2.DB.05BismuthiniteBi2S3Orth. mmm (2/m 2/m 2/m)
2.DB.05GuanajuatiteBi2Se3Orth. mmm (2/m 2/m 2/m) : Pnma
2.DB.05MetastibniteSb2S3Amor.
2.DB.05PääkköneniteSb2AsS2Mon. 2/m : B2/m
2.DB.05StibniteSb2S3Orth. mmm (2/m 2/m 2/m)
2.DB.10Ottemannitebeta Sn2S3
2.DB.10SuredaitePbSnS3Orth. mmm (2/m 2/m 2/m)
2.DB.15Bowieite(Rh,Ir,Pt)2S3Orth. mmm (2/m 2/m 2/m)
2.DB.15Kashinite(Ir,Rh)2S3Orth.
2.DB.25EdgariteFeNb3S6Hex. 6 2 2 : P63 2 2
2.DB.30Tarkianite(Cu,Fe)(Re,Mo)4S8Iso. 4 3m
2.DB.35CameroniteCu5-x(Cu,Ag)3+xTe10 (x = 0.43)Mon. 2/m : B2/b

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

3.3.1CalaveriteAuTe2Mon.
3.3.2KrenneriteAu3AgTe8Orth. mm2 : Pma2
3.3.3KostoviteCuAuTe4Orth.
3.3.4UytenbogaardtiteAg3AuS2Trig. 3m (3 2/m) : R3c
3.3.5FischesseriteAg3AuSe2Iso. 4 3 2 : I41 3 2
3.3.6PetrovskaiteAuAg(S,Se)Mon.
3.3.7PetziteAg3AuTe2Iso. 4 3 2 : I41 3 2
3.3.8MuthmanniteAuAgTe2Mon. 2/m : P2/m
3.3.9Sylvanite(Au,Ag)2Te4Mon. 2/m : P2/b
3.3.10Penzhinite(Ag,Cu)4Au(S,Se)4Hex.
3.3.11Bezsmertnovite(Au,Ag)4Cu(Te,Pb)Orth.
3.3.12BilibinskitePbCu2Au3Te2Iso.
3.3.13Bogdanovite(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.

References for MontbrayiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
PEACOCK, M.A. & THOMPSON, R.M. (1946): Montbrayite, a new gold telluride. American Mineralogist 31, 515-526.
THOMPSON, R.M. (1949): The telluride minerals and their occurrence in Canada. American Mineralogist 34, 342-382.
Rucklidge, J. (1969): Frohbergite, montbrayite, and a new Pb-Bi telluride. Can. Mineral. 9, 709-716.
BACHECHI, F. (1971): Crystal structure of montbrayite. Nature, Physical Sciences 231, 67-68.
American Mineralogist (1972): 57: 146-154.
Bindi, L., Paar, W.H., Lepore G.O. (2018): Montbrayite, (Au,Ag,Sb,Pb,Bi)23(Te,Sb,Pb,Bi)38, from the Robb-Montbray mine, Montbray, Québec: Crystal structure and revision of the chemical formula. Canadian Mineralogist, 56, 129-142.

Internet Links for MontbrayiteHide

Localities for MontbrayiteHide

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 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 (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Australia
 
  • Western Australia
    • Kalgoorlie-Boulder Shire
      • Kalgoorlie-Boulder
Canadian Mineralogist (2003) 41, 1503-1524
Bulgaria
 
  • Sofiya Oblast (Sofia Oblast)
    • Chelopech
Bonev, I.K.; Petrunov, R.; Cook, N. J.; Ciobanu, C. L. (2005): Kostovite and its argentian varieties: Deposits and mineral associations. Bulgarian Academy of Sciences, Geochemistry, Mineralogy and Petrology. 42, 1-22
Canada (TL)
 
  • Québec
    • Abitibi-Témiscamingue
      • Rouyn-Noranda TE
PEACOCK, M.A. & THOMPSON, R.M. (1946): Montbrayite, a new gold telluride. American Mineralogist 31, 515-526. THOMPSON, R.M. (1949): The telluride minerals and their occurrence in Canada. American Mineralogist 34, 342-382. BACHECHI, F. (1971): Crystal structure of montbrayite. Nature, Physical Sciences 231, 67-68. Econ.Geol.: 83; 395-404.
China
 
  • Hebei Province
    • Zhangjiakou Prefecture
      • Chongli Co.
        • Dongping Au-Te ore field
Changjin Cai (1993): Acta Mineralogica Sinica 13(1), 65-71
  • Shandong Province
    • Linyi Prefecture
      • Pingyi Co.
        • Tongshi complex
Changfu Chen, Yanbing Li, and Mingxia Jiang (1999): Geological Science and Technology Information 18(1), 60-66
Fiji
 
  • Viti Levu
    • Tavua Gold Field
      • Vatukoula
Scherbarth, N. L., & Spry, P. G. (2006). Mineralogical, petrological, stable isotope, and fluid inclusion characteristics of the Tuvatu gold-silver telluride deposit, Fiji: Comparisons with the Emperor deposit. Economic Geology, 101(1), 135-158.
Finland
 
  • Eastern Finland Region
Hytönen,K. (1999): Suomen Mineraalit. Geologian tutkimuskeskus. Erillisjulkaisu, Jyväskylä, 399 pp (p.346)
Geological Survey of Finland 2008. Pampalo(Ward)-Gold Database.
  • Lapland Region
    • Ylitornio
Nebocat, J., & Eng, P. (2011) Progress Report on the Geology, Mineralization and Exploration Activities on the Rompas Gold-Uranium Property.
  • Western and Inner Finland Region
    • Orivesi
Kinnunen, Aulis 2008. A paleoproterozoic high-sulfidation epithermal deposit at Orivesi, Southern Finland. Acta Universitatis Ouluensis, Series A. Scientiae Rerum Naturalium 507.
Kazakhstan
 
  • Akmola
Spiridonov, Ernst M. "New Data on Mineralogy of Deposits of Plutonogenic Gold-quartz Formation in the Northern Central Kazakhstan. Part I."
  • East Kazakhstan
    • Kurchumskiy District
Глоба В.А. Месторождение Манка - новый геолого-промышленный тип месторождений золота. // Изв. НАН РК, Сер. геол. 2006, 5(403), с.20-28.
Mexico
 
  • Sonora
    • Mun. de Moctezuma
Lapis 2001(1), 11-40
Bonev, I. K., Petrunov, R., Cook, N. J., & Ciobanu, C. L. (2005). Kostovite and its argentian varieties: Deposits and mineral associations. Geochem. Mineral. Petrol.(Bulg. Acad. Sci.), 42, 1-22.
Romania
 
  • Hunedoara Co.
    • Brad
      • Crișcior (Criștior; Zarándkristyor; Kristyor; Körösfalva; Kreischquell)
        • Brad Muşariu (Brád; Muşariu)
          • Mustari (Muszàri)
Econ.Geol.: 83; 395-404
Russia
 
  • Eastern-Siberian Region
    • Sakha Republic (Yakutia)
      • Aldan Shield
        • Aldan
Leontev, V. I., & Bushuev, Y. Y. E. (2017). Ore Mineralization in Adular-Fluorite Metasomatites: Evidence of the Podgolechnoe Alkalic-Type Epithermal Gold Deposit (Central Aldan Ore District, Russia). In Key Engineering Materials (Vol. 743, pp. 417-421). Trans Tech Publications.
  • Urals Region
    • Southern Urals
      • Chelyabinsk Oblast'
        • Verkhneural'sk District
          • Mezhozerny settlement
Amplieva, E.E. (2008): Geology of Ore Deposits 50(5), 404-422.
      • Orenburgskaya Oblast'
        • Gay
Vikent'ev, I.V., Moloshag, V.P. and Yudovskaya, M.A. (2006): Geology of Ore Deposits 48(2), 77-107.; Vikentyev, I. V., & Vikentyeva, O. V. (2015). Precious metal minerals and “invisible” gold in sulfide ores of Urals. In Mater. of ХII Int. Sci. Conf.“Advanced Technologies, Equipment and Analytical Systems for Materials and Nano-Materials (Vol. 3, pp. 33-41).; Vinokurov, S. F., Vikent’ev, I. V., & Sychkova, V. A. (2010). Determining ionic gold species in massive sulfide ores. Geochemistry International, 48(5), 510-516.
Sweden
 
  • Hälsingland
    • Ljusdal
Nysten, P. & Annersten, H. (1984): The gold mineralization at Enåsen, central Sweden. Geologiska Foereningens i Stockholm Foerhandlingar 106, 245-256.
Tajikistan
 
  • Viloyati Sogd (Viloyati Sughd; Viloyati Khodzhent; Viloyati Leninabad)
GEOCHMISTRY, MINERALOGY AND PETROLOGY • 4 3 • SOFIA pp 69-74
USA
 
  • Nevada
    • Lincoln Co.
Rocks & Minerals, Nov. 1999
NBMG Spec. Pub. 31 Minerals of Nevada
Uzbekistan
 
  • Tashkent Viloyati (Toshkent)
    • Angren Region
      • Chatkal-Kuraminskii Range
Eleonora A. Dunin-Barkovskaya, Umid K. Aripov, L.A. Tsoy, M.A. Kim (2005) Mineralogical features and ore-forming conditions of goldbearing deposits of Uzbekistan. GEOCHMISTRY, MINERALOGY AND PETROLOGY 43 SOFIA pp 69-74
Mineral and/or Locality  
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