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Montbrayite

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Formula:
(Au,Sb)
 
2
Te
 
3
System:TriclinicHardness:2½
This page provides mineralogical data about Montbrayite.

Classification of Montbrayite

IMA status:Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
Strunz 8th edition ID:2/D.15-10
Nickel-Strunz 10th (pending) edition ID: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
Dana 8th edition ID:2.11.8.1

2 : SULFIDES
11 : AmBnXp, with (m+n):p = 2:3
Hey's CIM Ref.: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
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Type Occurrence of Montbrayite

Type Locality:Robb-Montbray Mine, Rouyn-Noranda TE, Abitibi-Témiscamingue, Québec, Canada
Year of Discovery:1945

Physical Properties of Montbrayite

Hardness (Mohs):2½

Crystallography of Montbrayite

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

Chemical Properties of Montbrayite

Formula:
(Au,Sb)
 
2
Te
 
3
Essential elements:Au, Te
All elements listed in formula:Au, Sb, Te
Common Impurities:Ag,Pb,Bi,S

Relationship of Montbrayite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
2.DB.05Antimonselite
Sb
 
2
Se
 
3
2.DB.05Bismuthinite
Bi
 
2
S
 
3
2.DB.05Guanajuatite
Bi
 
2
(Se,S)
 
3
2.DB.05Metastibnite
Sb
 
2
S
 
3
2.DB.05Pääkkönenite
Sb
 
2
AsS
 
2
2.DB.05Stibnite
Sb
 
2
S
 
3
2.DB.10Ottemannite
beta Sn
 
2
S
 
3
2.DB.10Suredaite
PbSnS
 
3
2.DB.15Bowieite
(Rh,Ir,Pt)
 
2
S
 
3
2.DB.15Kashinite
(Ir,Rh)
 
2
S
 
3
2.DB.25Edgarite
FeNb
 
3
S
 
6
2.DB.30Tarkianite
(Cu,Fe)(Re,Mo)
 
4
S
 
8
2.DB.35Cameronite
AgCu
 
7
Te
 
10
Related Minerals - Hey's Index Grouping:

- +
3.3.1Calaverite
AuTe
 
2
3.3.2Krennerite
(Au,Ag)Te
 
2
3.3.3Kostovite
CuAuTe
 
4
3.3.4Uytenbogaardtite
Ag
 
3
AuS
 
2
3.3.5Fischesserite
Ag
 
3
AuSe
 
2
3.3.6Petrovskaite
AuAg(S,Se)
3.3.7Petzite
Ag
 
3
AuTe
 
2
3.3.8Muthmannite
AuAgTe
 
2
3.3.9Sylvanite
(Au,Ag)
 
2
Te
 
4
3.3.10Penzhinite
(Ag,Cu)
 
4
Au(S,Se)
 
4
3.3.11Bezsmertnovite
(Au,Ag)
 
4
Cu(Te,Pb)
3.3.12Bilibinskite
PbCuAu
 
3
Te
 
2
3.3.13Bogdanovite
(Au,Te,Pb)
 
3
(Cu,Fe)

Other Names for Montbrayite

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

Other Information

Health Warning: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:

- +
American Mineralogist (1946): 31: 515-526.

Rucklidge, J. (1969): Frohbergite, montbrayite, and a new Pb-Bi telluride. Can. Mineral. 9, 709-716.

American Mineralogist (1972): 57: 146-154.

Internet Links for Montbrayite

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  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Montbrayite details from Handbook of Mineralogy (PDF)
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    • Localities for Montbrayite

    The 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 Locality List
    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    Australia
     
    • Western Australia
      • Goldfields-Esperance region
        • Kalgoorlie-Boulder City
          • Kalgoorlie
    		Canadian Mineralogist (2003) 41, 1503-1524
    Canada
     
    • Québec
      • Abitibi-Témiscamingue
        • Rouyn-Noranda TE
    		Econ.Geol.: 83; 395-404; Am Min (1948) 31:515-526
    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
    Finland
     
    • Itä-Suomen Lääni
      • Ilomantsi
    		No reference listed
    Mexico
     
    • Sonora
      • Mun. de Moctezuma
    		Lapis 2001(1), 11-40
    Romania
     
    • Hunedoara Co.
      • Brad
    		Econ.Geol.: 83; 395-404
    Russia
     
    • 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.
    Sweden
     
    • Hälsingland
      • Ljusdal
    		No reference listed
    USA
     
    • Nevada
      • Lincoln Co.
    		Rocks & Minerals, Nov. 1999
    NBMG Spec. Pub. 31 Minerals of Nevada
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    Copyright © Jolyon Ralph and Ida Chau 1993-2011. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
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