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Showing 1 to 6 of 6 for “"sulphidation"”.
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Microwave Vacuum Carbothermic Reduction and Sulphidation of a Low Grade Nickeliferous Silicate Laterite Ore
The international resources of nickel sulphides are quickly diminishing. In order to satisfy forthcoming nickel demands, the feasible mining of nickel laterite deposits is imperative. Nickel laterites cannot be easily treated since the nickel is finely disseminated throughout the ore. Therefore, …
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Tectonic, magmatic and metallogenic evolution of the Cajamarca mining district, Northern Peru
… pyritic phyllic alteration. Late Miocene high-sulphidation deposits (~11 Ma) near Cajamarca formed during the cessation of intense crustal thickening and uplift that was associated with shallowing of the slab dip angle. Location of ore bodies at the Yanacocha mine was largely controlled by WNW …
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Gold mineralization in the Um El Tuyor area, South Eastern Desert, Egypt
… reactions, but was dominated by carbonatization, sulphidation and redox reactions. The latter reduced the interacting fluids, particularly where the fluid : rock ratio was low and provided favourable conditions for gold deposition. It is interpreted that sulphidation has affected the gold …
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Die Genese der Goldlagerstätte Hira Buddini, Südindien
… pyrite and the absence of magnetite. Wall rock sulphidation is identified as the most likely cause for gold precipitation. Boron isotopic studies on tourmaline indicate mixing of a magmatic and a metamorphic fluid within the shear zone system (Krienitz et al., 2008). A second stage of …
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The geological and grade continuity of the Pajingo epithermal gold system
… deposits are classified as volcanic hosted low-sulphidation epithermal quartz vein systems, and a thorough literature review of epithermal style deposits showed that the characteristics of the Vera South deposit are almost identical to those of the classic low sulphidation model. The PES …
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The Effect of Superimposed Stress on High Temperature Degradation of Single Crystal Superalloys during Exposure to Various Sulphur and Sea Salt Environments
Alternative fuels and novel cycles are increasingly used to supply the world growing demand in energy whilst reducing the carbon emission. Such cycles include the integrated gasification combined cycle (IGCC) with carbon capture, which uses coal as fuel. In such situations however, sulphur and …