Business
Exploration Update Migori
Exploration Update Migori.
About this update from Red Rock Resources Plc
[{"type":"text","content":"\n RNS Number : 0861M Red Rock Resources plc 17 May 2010 \n\nRED ROCK RESOURCES PLC\nExploration Update: Sampling at Migori\nDate: 18th May 2010\nRed Rock Resources plc ('Red Rock' or the 'Company') the mining exploration and mineral investment company with interests in steel feed, uranium, and gold, announces new sample results from its Migori gold project in Kenya.\nResults have been received for: hand-grab samples collected from across the entire strike length of the Migori greenstone belt; samples from the December 2009/January 2010 reverse circulation ('RC') drilling programme; and the samples drilled at the tailings dam. Target commodities were precious and base metals.\nThe company aimed to test the hypothesis that gold and sulphides had become hydrothermally emplaced in BIFs (Banded Iron Formations), and subsequently leached from surface and concentrated at depth. Thus surface samples of the BIFs were taken and an RC rig employed to drill beneath them. Unfortunately the drilling was hindered by excess water due to the elevated water table; however samples obtained show the presence of abundant sulphides (pyrite and arsenopyrite) and suggest the effects of a supergene leaching process at play.\nTargets and results are summarised as follows:\n\n\n\nSurface sampling of BIFs along the entire length of the Migori Belt. The porous nature of the BIFs, and low-moderate Au grades, demonstrate that they have been leached of gold and sulphides.\n\n\nSurface sampling of hydrothermal lode deposits, some currently worked by artisanal miners. Samples from these quartz lodes are highly auriferous with grades exceeding 50 g/t in one area.\n\n\nRC drilling directly under the leached BIFS. The presence of hydrothermal quartz at depth, and the abundance of sulphides, suggest emplacement following supergene leaching.\n\n\nPercussion drilling of the tailings dam. New gold grades are greater than 1 g/t in both the sulphides and the calcines. Silver grades exceed 16 g/t.\n\n\n\nHydrothermal lode, and BIF-hosted, gold mineralisation\nA great number of the hydrothermal, lode deposits (quartz, 'reef' material), some of which are worked by the local artisanals, were sampled during the prospecting exercise. Samples of these hydrothermal lodes show some highly auriferous results: expanding the repertoire of valid, exploration targets; and ...