Montbrayite
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About Montbrayite
Formula:
(Au,Ag,Sb,Bi,Pb)23(Te,Sb,Bi,Pb)38
Hardness:
2½
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.
The former formula, (Au,Sb)2Te3, was changed due to the IMA 17-F redefinition proposal.
Classification of Montbrayite
Approved, 'Grandfathered' (first described prior to 1959)
Notes:
Redefined by the IMA
Approval History:
IMA 17-F
2/D.15-10
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 : 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
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
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 Montbrayite
Hardness:
2½ on Mohs scale
Chemical Properties of Montbrayite
Formula:
(Au,Ag,Sb,Bi,Pb)23(Te,Sb,Bi,Pb)38
Common Impurities:
Ag,Pb,Bi,S
Crystallography of Montbrayite
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°
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 Montbrayite
Other Language Names for Montbrayite
Related Minerals - Nickel-Strunz Grouping
| 2.DB.05 | Antimonselite | Sb2Se3 | Orth. mmm (2/m 2/m 2/m) |
| 2.DB.05 | Bismuthinite | Bi2S3 | Orth. mmm (2/m 2/m 2/m) |
| 2.DB.05 | Guanajuatite | Bi2Se3 | Orth. mmm (2/m 2/m 2/m) : Pnma |
| 2.DB.05 | Metastibnite | Sb2S3 | Amor. |
| 2.DB.05 | Pääkkönenite | Sb2AsS2 | Mon. 2/m : B2/m |
| 2.DB.05 | Stibnite | Sb2S3 | Orth. mmm (2/m 2/m 2/m) |
| 2.DB.10 | Ottemannite | Sn2S3 | Orth. mmm (2/m 2/m 2/m) |
| 2.DB.10 | Suredaite | PbSnS3 | Orth. mmm (2/m 2/m 2/m) |
| 2.DB.15 | Bowieite | (Rh,Ir,Pt)2S3 | Orth. mmm (2/m 2/m 2/m) |
| 2.DB.15 | Kashinite | (Ir,Rh)2S3 | Orth. |
| 2.DB.25 | Edgarite | FeNb3S6 | Hex. 6 : P63 |
| 2.DB.30 | Tarkianite | (Cu,Fe)(Re,Mo)4S8 | Iso. 4 3m |
| 2.DB.35 | Cameronite | Cu5-x(Cu,Ag)3+xTe10 (x = 0.43) | Mon. 2/m : B2/b |
Related Minerals - Hey's Chemical Index of Minerals Grouping
| 3.3.1 | Calaverite | AuTe2 | Mon. |
| 3.3.2 | Krennerite | Au3AgTe8 | Orth. mm2 : Pma2 |
| 3.3.3 | Kostovite | CuAuTe4 | Orth. |
| 3.3.4 | Uytenbogaardtite | Ag3AuS2 | Trig. 3m (3 2/m) : R3c |
| 3.3.5 | Fischesserite | Ag3AuSe2 | Iso. 4 3 2 : I41 3 2 |
| 3.3.6 | Petrovskaite | AuAgS | Mon. |
| 3.3.7 | Petzite | Ag3AuTe2 | Iso. 4 3 2 : I41 3 2 |
| 3.3.8 | Muthmannite | AuAgTe2 | Mon. 2/m : P2/m |
| 3.3.9 | Sylvanite | (Au,Ag)2Te4 | Mon. 2/m : P2/b |
| 3.3.10 | Penzhinite | (Ag,Cu)4Au(S,Se)4 | Hex. |
| 3.3.11 | Bezsmertnovite | (Au,Ag)4Cu(Te,Pb) | Orth. |
| 3.3.12 | Bilibinskite | PbCu2Au3Te2 | Iso. |
| 3.3.13 | Bogdanovite | (Au,Te,Pb)3(Cu,Fe) | Iso. |
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 Montbrayite
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 Montbrayite
mindat.org URL:
https://www.mindat.org/min-2761.html
Please feel free to link to this page.
Please feel free to link to this page.
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Localities for Montbrayite
symbol to view information about a locality.
The Locality List
- 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).
All localities listed without proper references should be considered as questionable.
Australia | |
| Canadian Mineralogist (2003) 41, 1503-1524 |
| Mueller, A. G., & Muhling, J. R. (2019). Early pyrite and late telluride mineralization in vanadium-rich gold ore from the Oroya Shoot, Paringa South mine, Golden Mile, Kalgoorlie: 3. Ore mineralogy, Pb-Te (Au-Ag) melt inclusions, and stable isotope constraints on fluid sources. Mineralium Deposita, 1-34. | |
Bulgaria | |
| 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) | |
| 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 | |
| Changjin Cai (1993): Acta Mineralogica Sinica 13(1), 65-71 |
| Changfu Chen, Yanbing Li, and Mingxia Jiang (1999): Geological Science and Technology Information 18(1), 60-66 |
Fiji | |
| 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 | |
| Nebocat, J., & Eng, P. (2011) Progress Report on the Geology, Mineralization and Exploration Activities on the Rompas Gold-Uranium Property. |
| Hytönen,K. (1999): Suomen Mineraalit. Geologian tutkimuskeskus. Erillisjulkaisu, Jyväskylä, 399 pp (p.346) |
| Geological Survey of Finland 2008. Pampalo(Ward)-Gold Database. | |
| Kinnunen, Aulis 2008. A paleoproterozoic high-sulfidation epithermal deposit at Orivesi, Southern Finland. Acta Universitatis Ouluensis, Series A. Scientiae Rerum Naturalium 507. |
Kazakhstan | |
| Spiridonov, Ernst M. "New Data on Mineralogy of Deposits of Plutonogenic Gold-quartz Formation in the Northern Central Kazakhstan. Part I." |
| Глоба В.А. Месторождение Манка - новый геолого-промышленный тип месторождений золота. // Изв. НАН РК, Сер. геол. 2006, 5(403), с.20-28. |
Mexico | |
| 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 | |
| Econ.Geol.: 83; 395-404 |
Russia | |
| Amplieva, E.E. (2008): Geology of Ore Deposits 50(5), 404-422. |
| 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. |
| 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. |
Sweden | |
| Nysten, P. & Annersten, H. (1984): The gold mineralization at Enåsen, central Sweden. Geologiska Foereningens i Stockholm Foerhandlingar 106, 245-256. |
USA | |
| Rocks & Minerals, Nov. 1999 |
| NBMG Spec. Pub. 31 Minerals of Nevada | |
Uzbekistan | |
| 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 |
| GEOCHMISTRY, MINERALOGY AND PETROLOGY • 4 3 • SOFIA pp 69-74 |
Robb-Montbray Mine, Rouyn-Noranda TE, Abitibi-Témiscamingue, Québec, Canada