...Luca Bindi; Curzio Cipriani Abstract Muthmannite, AuAgTe 2 , a rare gold-silver telluride was discovered in a sample from the historical mineralogical collection of the Naturhistorisches Museum of Vienna. The sample is from the gold-telluride deposit of Sacarîmb, Metaliferi Mountains, western...

... were identified in the studied samples. Notably, almost two thirds of the platinum-group element-bearing minerals consist of melonite. Some of the platinum-group minerals contain inclusions of Ag-rich gold (AgAu 2 ) and muthmannite (AuAgTe 2 ). Most of the platinum-group minerals occur as inclusions...

... , the most important group of minerals from an economic standpoint in the Au–Ag–Te system. This group comprises calaverite, AuTe 2 , krennerite, Au 3 AgTe 8 , muthmannite, AuAgTe 2 , and sylvanite, AuAgTe 4 . Petzite, Ag 3 AuTe 2 , cannot be grouped with the structures above since it shows intermetallic...

... tetrahedra in the crystal structures of hessite (Ag 2 Te, Van der Lee & de Boer 1993 ), stützite (Ag 5– x Te 3 , Peters et al. 1996 ), empressite (AgTe, Bindi et al. 2004 ); AgTe 6 and AuTe 6 octahedra in the crystal structures of sylvanite (AgAuTe 4 , Pertlik 1984a ), muthmannite (AuAgTe 2...

... . Barrett C.S. , Cucka P. and Haefner K. ( 1963 ) The crystal structure of antimony at 4.2, 78 and 298 K . Acta Crystallographica , 16 , 451 – 453 . Bindi L. and Cipriani C. ( 2004 ) Ordered distribution of Au and Ag in the crystal structure of muthmannite, AuAgTe 2...

.... and Oen , I.S. ( 1978 ) Uytenbogaardtite, a new silver-gold sulfide . The Canadian Mineralogist , 16 , 651 – 657 . Bindi , L. ( 2008 ) Commensurate-incommensurate phase transition in muthmannite, AuAgTe 2 : first evidence of a modulated structure at low-temperature . Philosophical...

... Strutturale, University of Florence, Italy. This work was funded by “Progetto d’Ateneo 2012” issued to LB. The paper benefited by the official reviews made by Cristian Biagioni and František Laufek. References Bindi L. ( 2008 ) Commensurate-incommensurate phase transition in muthmannite, AuAgTe...

... of muthmannite, AuAgTe 2 , a rare telluride from Sacarîmb, western Romania . American Mineralogist 89 , 1505 – 1509 . Bindi , L. & Evain , M. ( 2007 ) Gram-Charlier development of the atomic displacement factors into mineral structures: The case of samsonite, Ag 4 MnSb 2 S 6...

.... , petzite, stützite, krennerite, nagyágite and muthmannite). Although the morphology and chemistry of this mineral resemble those of nagyágite, [Pb 2 (Pb,Sb) 2 S 4 ] [(Te,Au)] 2 , museumite was initially recognised as being a new species, due to its sulphur content, higher than that required...

... transition in muthmannite, AuAgTe 2 : First evidence of a modulated structure at low-temperature. Philosophical Magazine Letters , 88 , 533 –541. ——— ( 2009 ) Thermal expansion behavior of empressite, AgTe: A structural study by means of in situ high-temperature single-crystal X-ray diffraction...

... Romania . Eur. J. Mineral . 16 (in press). Bindi , L. & Cipriani , C. ( 2004 b): Ordered distribution of Au and Ag in the crystal structure of muthmannite, AuAgTe 2 , a rare telluride from Sacarîmb, western Romania . Am. Mineral . 89 (in press). Braith , H. , Grobner...

... such as muthmannite, krennerite, petzite and calaverite. The formation of sulfotellurides in hydrothermal systems indicates a relatively low f Te 2 , insufficient for the formation of most S-free tellurides ( Novoselov et al. , 2006 ). Estimates of the crystallization temperatures for sulfotellurides...

.... ( 2004 ) Ordered distribution of Au and Ag in the crystal structure of muthmannite, AuAgTe 2 , a rare telluride from Sacarimb, western Romania . American Mineralogist , 89 , 1505 – 1509 . Bindi L. Spry P.G. Cipriani C. ( 2004 ) Empressite, AgTe from the Empress-Josephine mine...

... but is included in the alunite-pyrite-enargite zone because it overlaps the gold stage and locally contains native gold inclusions. Muthmannite has the structural formula (Ag,Au)Te and yuanjiangite is AuSn. ...

... , 80 – 84 . Bindi, L. & Cipriani, C. (2004) Ordered distribution of Au and Ag in the crystal structure of muthmannite, AuAgTe 2 , a rare telluride from Sacarîmb, western Romania...