To investigate pathways to adjust the charge carrier concentration and optimize thermoelectric properties, we characterized structural thermal stability, performance of pristine Cl-doped Cu5+εSn2−εS7. We demonstrate that Cl doping in Cu5Sn2S7-type monoclinic compounds induces a collapse long-range cationic ordering, ultimately leading sphalerite-type cubic phase by ordered [Sn(S,Cl)4]x clusters...

Supergene mineral assemblages rich in Pb, As and P occur on the dumps after historical mining of base-metal deposit Kvasetice (Havlíčkův Brod ore district, Bohemian-Moravian Highlands, Czech Republic). The primary hydrothermal assemblage pyrite > sphalerite arsenopyrite galena >> boulangerite hosted quartz veins is partly different from other similar localities this area, which belong ...

pb-zn deposits in the kurdistan region, northern iraq, have occurred mainly as a stratabound and open-space filling ore bodies. they are hosted by dolostone and dolomitic-limestone of platform carbonates. the ore deposits at the studied dure and lefan areas are respectively hosted by kurra chine (upper triassic) and bekhme (upper cretaceous) formations. pyrite, sphalerite and galena are the maj...

Chert concretions in thick limestone successions preserve a more complete paragenetic sequence of diagenetic minerals than their host and interbedded shale. The goal this study was to test the possible presence high-temperature mineralising system Ionian basin western Greece. Upper Cretaceous chert nodules were sampled at Araxos, where rocks are highly faulted uplifted by salt diapirism, on Kas...