Web1 dec. 2024 · The Fanshan lithocap, located in the Luzong basin, develops lateral alteration zones from central vuggy quartz – alunite – pyrite through quartz – kaolinite – dickite to distal quartz – kaolinite – interstratified illite/smectite. Fluids forming Fanshan lithocap are mainly magmatic water mixing with minor meteoric water.The 3:1 H 2 S:SO 4 (stage 1) of … WebHigh spatial resolution airborne and laboratory-based hyperspectral images are combined to detect and visualise textures of muscovite replacing pyrophyllite in the shortwave infrared …
Fortitude Gold Corp encouraged by drill results from lithocap …
WebLithocaps are subsurface, broadly stratabound alteration domains that are laterally and vertically extensive. They form when acidic magmatic … Webby a lithocap (e.g., Sillitoe 1995, 2010; Chang et al. 2011; Fig. 1). Lithocaps may host high-sulfidation state mineralisation. Some overlie and partially overprint porphyry deposits. ios creation tool
Almadex Samples 6.0 g/t gold and 2410 g/t Ag in New High Grade …
Web1 nov. 2024 · In 2013, a diamond drill program tested an extensive advanced argillic alteration lithocap within the Hu’u project on eastern Sumbawa Island, Indonesia. A very large and blind copper-gold deposit (Onto) was discovered, in which copper occurs largely as disseminated covellite with pyrite, and as pyrite-covellite veinlets in a tabular block … Web6 nov. 2011 · Definition of porphyry copper belts and epochs Isotopic dating has defined regional-scale belts and corresponding epochs in most porphyry copper provinces Examples: • Gaby (Gabriela Mistral): 540Mt @ 0.52% Cu Ox – prioritised during initial exploration because of 43 Ma age • Other prospects – discarded because of 290-200 Ma … Web1 mrt. 2024 · A lithocap is a type of alteration system that has undergone advanced argillic and argillic alteration and is mainly composed of acid-sulfate alteration minerals … ios crasher