...Lawrence A. Taylor Abstract Smythite was found at the Silverfields Mine, Cobalt, Ontario, where it occurs in two distinctly different sulfide assemblages. Microprobe analyses of these smythites result in a composition of Fe 9 S 11 (≈Fe 3·25 S 4 ), with a measured density of 4.33 g/cm 3 (4.32 g/cm 3...

...E. H. Nickel; D. C. Harris Abstract Smythite from the Silverfields Mine, Cobalt, Ontario, with the composition Fe 3.25 S 4.00 , has reflectance values of R max = 46.0%, R min = 42.0% (at 546 nm), and a microhardness of 388 VHN. Both reflectance and microhardness are greater than those of co...

...Fig. 6. Longitudinal section of the Silverfields mine, vein 1, showing the distribution of silver grades (top) and arsenides (below) (after Petruk, 1971b ). ...

... formations in the Parktown Formation of the Hospital Hill Subgroup in the lower part of the succession and the diamictite association by the Promise and Silverfield iron formations in the overlying Government Subgroup. The iron formation units have been subjected to lower greenschist facies metamorphism...

...F ig . 1. Location and regional geology of the Cobalt Embayment. Mineralized vein occurrences selected for lead isotope analysis in this study are identified by the bold font ( n = 11). Samples from the historical Cobalt Ag vein systems include Beaver-Temiskaming, Silverfields, and Brady Lake...

... profiles used in this study are given in Figure 1 . Stratigraphic reference profiles were constructed by geological field mapping of the major outcrop areas of West Rand Group strata: West Rand: Randfontein, Witpoortjie and Rant-en-dal gorge areas; Klerksdorp: Near old Buffelsdoorn Mine...

.... How did he come to suspect its presence? He noted high zinc in the spring waters surfacing in the open-pit, and recommended to the mining company that they drill deeper. Similarly, his observations on metalliferous groundwaters at Cobalt contributed to the development of the rich Silverfields deposit...

..., Burda, and Davis. Historical mines studied in the Gowganda area include: Mann, Capital, Parcher, and Bishop. Historical mines from the Cobalt area include: Brady Lakes, Bruce, Beaver–Temiskaming, Hi–Ho, North Cobalt, Pan Silver, Silverfields, and Silversides. RLB: Round Lake Batholith, SIC: Sudbury...

...), sedimentary exhalative (SEDEX), unconformity uranium, sediment-hosted stratiform Cu-Co, and serpentinization-associated deposits. In the rare cases where a mineral deposit type has not been assigned to a resource or has not been disclosed by the mining or exploration company, a classification has been...

... formation (Silverfields Member). In comparison to the BAB1 drill-core, mesoscopic pyrite is relatively scarce in the AM1 drill-core, although a small number of pyrrhotite and pyrite concretions are recorded from the Afrikander and Roodepoort Formations, respectively. Large euhedral pyrite crystals...