... 3 AuTe 2 ], calaverite [AuTe 2 ], stützite [Ag 5− x Te 3 ], rucklidgeite [PbBi 2 Te 4 ], altaite [PbTe], volynskite [AgBiTe 2 ], tellurobismuthite [Bi 2 Te 3 ], tetradymite [Bi 2 Te 2 S], and buckhornite [AuPb 2 BiTe 2 S 3 ]. The Bi-sulfosalt minerals observed are Phase B, aikinite [PbCuBiS 3...

...F ig . 4. Photomicrographs (plain-polarized light) of ( a ) Buckhornite (b) as blades and irregular masses in tennantite (t) or in contact with petzite (p) and native gold (g). Petzite is also intergrown with stage I calaverite (c) and chalcopyrite (cp) (scale bar = 100 μm). ( b ) Coarse...

... = 2. The five strongest observed X-ray powder-diffraction lines [ d in Å ( I / I 0 ) ( hkl )] are: 7.466 (100) (011), 6.2760 (90) (020), 5.2003 (24) (021), 3.0963 (68) (003), 2.7768 (26) (023). The crystal structure showed that jaszczakite is the S–Bi-analogue of buckhornite [Pb 2 BiS 3 ][AuTe 2...

... mineral Sacarîmb Romania nagyágite-buckhornite The new mineral species described herein, museumite, Pb 5 AuSbTe 2 S 12 , is from the gold-telluride deposit of Sacarîcmb (the former Nagyág), Metaliferi Mountains, western Romania, a well-known source of rare telluride minerals ( i.e...

..., tellurobismuthite, buckhornite, hessite, petzite, calaverite, aikinite, kupcikite, lindstromite, salzburgite, wittichenite, and tetradymite. The system is characterized by carbono-aqueous fluids of low to moderate salinity and high oxygen fugacity. Total homogenization temperatures of the H 2 O-CO 2 fluid...

.... Ordering within the SnS-archetype and gold-tellurium layers, intense twinning and/or stacking variants are responsible for the often observed superstructure reflections. For buckhornite, [(Pb 2 Bi) (sub Sigma 3) S 3 ] [(AuTe 2 ) (sub Sigma 3) ], a structure model is proposed considering a homologous series...

...), and tellurobismuthite (Tb) in a quartz-pyrite vein. Note the porous texture on the surface of calaverite, petzite, and tellurobismuthite grains. (c) A mineral assemblage of native gold, galena (Gn), tellurobismuthite, buckhornite (Buh), and chalcopyrite (Cp) enclosed by pyrite in a sericite-pyrite seam. (d...

...) The crystal structure of synthetic buckhornite, [Pb 2 BiS 3 ][AuTe 2 ]. Zeits. Kristallogr., 215, 10–16. Single-crystal X-ray structure study ( R = 0.101) of synthetic buckhornite confirmed the orthorhombic symmetry, a = 4.108(3), b = 12.308(9), c = 9.331(6) Å, Z = 2, D calc = 8.25 g/cm 3...

...-tellurides, nagyagite and buckhornite, which were structurally characterized by Effenberger et al. (1999 , 2000 ). In the latter minerals, however, gold occurs in telluride layers, quite in line with the mineralogical importance of gold and Au-Ag tellurides, whereas the remaining cations (Pb, Sb, and Bi...

...) Å 4.198(79), 2.970(100), 2.749(66), 2.572(22), 2.017(20), 1.879(18), 1.818(49), 1.550(31) Type material is deposited in the collections of the Fersman Mineralogical Museum of the Russian Academy of Sciences, Moscow, Russia, registration number 4917/1 The S and Bi analogue of buckhornite...

... . Effenberger H. Culetto F.J. Topa D. Paar W.H. ( 2000 ) The crystal structure of synthetic buckhornite, [Pb 2 BiS 3 ][AuTe 2 ] . Zeitshcrift für Kristallographie , 215 , 10 – 16 . Emsley J. ( 2002 ) Nature's Building Blocks: an A–Z Guide to the Elements . Oxford University...

... of the `arseno-franckeite'-related major phase, compared to the natural material. Variation of input composition only allowed for minor improvement in this composition. Work on polymetallic sulphide (telluride) liquids in nagyágite and buckhornite melt synthesis (Effenberger et al ., 1999 , 2000 ), where Ag...

... nomenclature: sulrhodite. Mineralogical Magazine , 56 , 125 –126. Francis, C.A., Criddle, A.J. , Stanley, C.J., Lange, D.E., Shieh, S. and Francis, J.G. ( 1992 ). Buckhornite, AuPb 2 BiTe 2 S 3 , a new mineral from Boulder County, Colorado, and new data for aikinite, tetradymite and calaverite...

... (–), α 1.785, β 1.810, γ 1.820, 2 V (meas.) 66°, 2 V (calc.) 64° 4.41(4), 3.61(4), 3.30(5), 2.92(10), 2.65(5), 2.23(5) IMA No. 2003-039 Pb 2 (Pb,Sb) 2 S 8 [Te,Au] 2 Nagyágite-buckhornite homologous series Monoclinic: P 2 1 / m a 4.361, b 6.618, c 20.858 Å, β 92.71...