...Emil Makovicky; Dan Topa; Werner H. Paar Clino-oscarkempffite, Ag 1.27 Pb 0.49 Sb 1.68 Bi 1.54 S 6.01 , idealized as Ag 1.25 Pb 0.5 Sb 1.75 Bi 1.5 S 6 ( Z = 12), from the Colorada vein, Animas mine, Chocaya Province, Department of Potosi, Sur Chichas, Bolivia, is an N = 4 member of the lillianite...

...Dan Topa; Werner H. Paar; Emil Makovicky; Chris J. Stanley; Andy C. Roberts Abstract Oscarkempffite, ideally Ag 10 Pb 4 (Sb 17 Bi 9 ) Σ = 26 S 48 , is a new mineral species found in old material (1929–30) from the Colorada vein, Animas mine, Chocaya Province, Department of Potosi, Bolivia...

...Emil Makovicky; William G. Mumme; Robert W. Gable Abstract The crystal structure of ramdohrite, Pb 5.9 Fe 0.1 Mn 0.1 In 0.1 Cd 0.2 Ag 2.8 Sb 10.8 S 24 , from the Chocaya mine, Potosí, Bolivia, determined by Makovicky and Mumme from film data in 1983, was refined from single-crystal diffractometer...

..., franckeite, aramayoite, andorite, argirodite, etc. (Chocaya). Inexplicably the deposits are of shallow depth; in most cases their root zones are in the lower part of the hills and the vertical difference in elevation of the zones is not more than 1,000 m (Chorolque). There is zonal arrangement from tin...

... analyses of aramayoite from Chocaya, Bolivia, one of which exhibits As and Bi contents of 0.9 and 2.4 wt%, respectively. Recalculation of his analyses assuming admixed chalcopyrite and pyrite leads to a composition close to that of baumstarkite. (2) A triclinic phase with composition AgSbS 2 was reported...

...Figure 5. Reflectance curve for holubite from Kutná Hora. For comparison, the curves for staročeskéite from Kutná Hora (Pažout and Sejkora, 2018 ) and ramdohrite from Chocaya, Bolivia (Picot and Johan, 1982 ) are shown. ...

... are thought to have been overlain by stratovolcanoes at their time of emplacement; coeval volcanics are preserved at Oruro and Chorolque, and perhaps also at Potosi. A mineralized volcanic edifice remains at Chocaya and is believed to overlie a subjacent stock.The Bolivian porphyry tin deposits differ from...

... porphyry systems. T he tin porphyry deposits of Llallagua, Chorolque, and Cerro Rico form part of the central Andean tin belt in the Eastern Cordillera of Bolivia ( Fig. 1 ). The tin belt extends from southern Peru to northern Argentina and is the easternmost metallogenic province...

..., Animas mine, Chocaya Province, Department of Potosi, Bolivia (66°33′W; 21°S). The specimens were originally part of the famous Philadelphia Academy of Natural Science collection which contained a lot of historically important materials and which was sold to a mineral dealer. The specimens were provided...

... in the Puna 135 km west of Abra Pampa, Province of Jujuy, NW-Argentina ( Coira and Brodtkorb 1995 ; Sureda et al. 1986 ; Turner 1982 ). The mineralization is genetically comparable to the Ag-Sn formation of Bolivia and is the southernmost representative of this economically very important mineral belt...

... district in the Cordillera Real of Bolivia. Tourmaline is associated with greisens, breccias, and veins, which occur around the Triassic Chacaltaya peraluminous granitic stock hosted by Silurian metasedimentary rocks. Three main petrographic types of hydrothermal tourmaline have been identified: pre-ore...

... in the volcanic dome-hosted Ánimas- Chocaya-Siete Suyos polymetallic deposit, Potosí, Bolivia Lisard Torró, Malena Cazorla, Joan Carles Melgarejo, Antoni Camprubí, Marta Tarrés, Laura Gemmrich, Marc Campeny, David Artiaga, Belén Torres, Álvaro Martínez, Diva Mollinedo, Pura Alfonso, and Osvaldo R. Arce-Burgoa...

... visible at the right edge of the photo. The area is underlain by Ordovician sediments of the Acoite Formation which comprise slates, sandstones and greywackes. The dominant veins with economic mineralization (Oploca, Potosi, San Pedro, San Miguel, Llallagua, Chocaya and Colquechaca) trend E-W...

... from Cornwall, Malaysia, Bolivia, Nigeria). The environment of eruption of intermediate and acid igneous rocks can be deduced by use of diagrams based on the element Nb--such as SiO~ versus Nb. The acid- intermediate volcanics and granitic rocks from tin provinces have typically high Nb concentrations...

... Huara Huara addition, the salt lakes (salars) of the southern Salar of Carma San Lucas Uyuni Caracota Empexa Pulacayo Toropalca Altiplano are estimated to contain >50% of the Tasna Chocaya Western Cordillera ASineitme aSsuyos Chorolque Altiplano world s lithium resources. Finally, Bolivia has...

... in the old specimens originating from the 264 level of the Colorada vein, Animas mine, Chocaya Province, Department of Potosi, Sur Chichas, Bolivia, collected by the expeditions of W. Vaux in 1929–1930. The deposit is a typical for the hydrothermal Ag–Sn formation of Bolivia. In the upper parts...

..., page 2554; Mineralogical Magazine , 75 , 2549–2561. Oscarkempffite Ag 10 Pb 4 (Sb 17 Bi 9 ) 26 S 48 264 level, Colorada vein, Animas mine, Chocaya Province, Department of Potosi, Sur Chichas, Bolivia a = 5.706(8), c = 18.352(3) Å 2.86(80), 2.60(90), 2.43(100), 2.05(70...

... mine, Chocaya Province, Department of Potosi, Sur Chichas, Bolivia Dan Topa*, Emil Makovicky and Werner H. Paar *E-mail: [email protected] Lillianite homologue Monoclinic: P 2 1 / c ; structure determined a = 39.811(25), b = 19.280(12), c = 8.278(5) Å, β = 96.195(6...