Large stratiform, syngenetic deposits commonly yield galena-lead isotope 'model' ages that agree closely with the stratigraphic ages of their host rocks. However, analyses in Table 1 from stratiform,shale-hosted deposits (located on Fig. 701 of Cambrian to Devono-Mississippian age in or adjacent to the Selwyn Bar,in in British Columbia and Yukon Territory do not give reasonable ages if the mode...

The sediment-hosted stratiform copper–silver mineralization in the San Marcos area of Coahuila, northeastern Mexico occurs predominantly at an Early Cretaceous redox boundary between footwall siliciclastic red beds Formation and hanging-wall carbonate strata Cupido Sabinas basin. hypogene is mainly present as chalcocite-group minerals, with additional bornite chalcopyrite, everywhere both disse...

Cobalt demand is increasing due to its key role in the transition clean energies. Although main Co ores are sediment-hosted stratiform copper deposits of Democratic Republic Congo, also a by-product Ni–Co laterite deposits, where extraction efficiency depends, among other factors, on correct identification Co-bearing minerals. In this paper, we reported detailed study mineralisation profiles Lo...

One of the world's largest concentrations of sediment-hosted stratiform zinc-lead-barite deposits is (Figure 1). The largest and most developed of these is located in the Gataga area of northern British Columbia the CirqueiSouth Cirque deposit, with estimated geological reserves of 38.5 million tonnes averaging 8.0% Zn, 2.2% Pb and 47.2 gitonne Ag at Cirque and gitonne Ag at South Cirque (M...

One of the world's largest concentrations of sediment-hosted stratiform zinc-lead-barite deposits is (Figure 1). The largest and most developed of these is located in the Gataga area of northern British Columbia the CirqueiSouth Cirque deposit, with estimated geological reserves of 38.5 million tonnes averaging 8.0% Zn, 2.2% Pb and 47.2 gitonne Ag at Cirque and gitonne Ag at South Cirque (M...

Global demand for cobalt is increasing rapidly as we transition to a low-carbon economy. In order ensure secure and sustainable supplies of this critical metal there considerable interest in Europe understanding the availability from indigenous resources. This study reviews information on resources evaluates potential additional discoveries. Based published survey national mineral resource agen...

Seven undeveloped sediment-hosted stratiform Cu-Ag deposits constitute a future resource base of copper and silver ores in the Fore-Sudetic Monocline SW Poland. Among these, four have only recently been discovered documented: Nowa Sól, Sulmierzyce North, Mozów (forming part Northern Copper Belt) Żary. The three remaining – Bytom Odrzański, Głogów Retków surround currently mined New District to ...

Optical LANs versus copper LANs — CIOs and IT professionals are finding solutions to the many network challenges created by the emergence of big data, big data analytics, the virtual desktop, hosted/managed services, software-defined networks, cloud-based computing, wireless (3G/4G, DAS, Wi-Fi, BYOD) communications, the Internet of Things and smart-building technologies. Yet oddly enough, many ...