Lithocap definition
Web1 dec. 2024 · 1. Introduction. A lithocap is a horizontal or near-horizontal zone of hydrothermal alteration consisting of silicic (vuggy quartz and massive quartz), advanced argillic, and phyllic-argillic alteration formed at shallow depth as the consequence of volatiles released from underlying magmatic intrusions (Sillitoe, 1995).Lithocaps are commonly … 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 …
Lithocap definition
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http://ecite.utas.edu.au/123083 Web21 dec. 2024 · VANCOUVER, B.C. Azucar Minerals Ltd. (“Azucar” or the “Company”) (TSX-V: AMZ; OTCQX: AXDDF) is pleased to announce the definition of a large area of …
WebLithocap is widespread in high-sulfidation epithermal gold deposits, and have obvious features to explore this deposit. Through studying geology, mineral assemblages and … Web1 nov. 2013 · Hypogene advanced argillic alteration, typically quartz-alunite with halos of kaolinite ± dickite and roots of pyrophyllite ± diaspore, forms in the epithermal environment from condensates of magmatic vapor that contain SO 2 and HCl, which exsolved from an underlying intrusive source.
WebCarbonatite ( / kɑːrˈbɒnəˌtaɪt /) is a type of intrusive or extrusive igneous rock defined by mineralogic composition consisting of greater than 50% carbonate minerals. [1] … Web9 jun. 2024 · Colorado Springs, Colorado – June 9, 2024 – Fortitude Gold Corp. (OTCQB: FTCO) (the “Company”) today announced exploration drill results from its East Camp Douglas property’s lithocap target including 17.92 meters grading 1.29 grams per tonne (g/t) gold and 6.10 meters grading 1.42 g/t gold. This maiden drill program focused on ...
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 …
WebVANCOUVER, British Columbia, Dec. 21, 2024 (GLOBE NEWSWIRE) -- Azucar Minerals Ltd. ("Azucar" or the "Company") (TSX-V: AMZ; OTCQX: AXDDF) is pleas... list of us presidents ageWeb1 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 … immotherm serviceportalWeb1 nov. 2013 · Abstract. Porphyry ore deposits typically form in convergent plate margin or postsubduction settings at depths of 1-6. km. Oxidized hydrous melts derived from the metasomatized mantle wedge ... immo theouleWebthe lithocap and flowed laterally to the NW, depositing enargite and gold subsequent to the leaching event of stage 1 (Mancano & Campbell, 1995; Hedenquist et al., 1998), forming the Lepanto deposit. We studied the mineralogy and S isotopic composi-tion of sulfide and sulfate minerals of the porphyry deposit and along >2 km of the Lepanto ... immo therapyWebemplazamiento tanto de la roca con textura moteada, cuyo rumbo principal es N130°, como del lithocap de Terciopelo (Fig. 2) 601 immotherm ht agWeb1 jan. 2010 · Abstract. Porphyry Cu systems host some of the most widely distributed mineralization types at convergent plate boundaries, including porphyry deposits centered on intrusions; skarn, carbonate-replacement, and sediment-hosted Au deposits in increasingly peripheral locations; and superjacent high- and intermediate-sulfidation … list of us presidents and first ladiesWebLithocaps are subsurface, broadly stratabound alteration domains that are laterally and vertically extensive. They form when acidic magmatic-hydrothermal fluids react with wallrocks during ascent towards the paleosurface. Although lithocaps typically have steeply-dipping structural roots, there is a significant component of lateral fluid flow involved in … list of us overseas territories