Propylitic alteration
WebbPropylitic alteration is the chemical alteration of a rock, caused by iron and magnesium bearing hydrothermal fluids, altering biotite or amphibole within the rock groundmass. It … WebbAdvanced argillic alteration It is rather difficult to determine the sequence of each type of alteration in a mine area. However, it is widely accepted that the hydrothermal alteration …
Propylitic alteration
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WebbWe characterised the hydrothermal alteration assemblage using optical mineralogy and existing petrography reports and showed that lithologies had a spread of secondary mineralisation that occurred across the smectite, argillic and propylitic alteration zones. Webb1 apr. 2024 · Recently, the propylitic alteration haloes around porphyry-copper ore deposits have received increasing attention because of the increased footprint that these …
WebbStage 1 is characterized by propylitic alteration (epidote, chlorite, calcite), specularite veins, minor pyrite and chalcopyrite probably associated in time with Mo-Cu mineralization (~10 Ma) and porphyritic granodiorites (~10-8.4 Ma) cropping out in the district. Stage 2 (~3.4 Ma) is characterized by phyllic alteration ... WebbPAPER OPEN ACCESS Hydrothermal alteration and timing of gold mineralisation in the Rumbia Complex, Southeast Arm of Sulawesi, Indonesia To cite this article: Musri Mawaleda et al 2024 IOP Conf. Ser.: Earth Environ. Sci. 71 012030 View the article online for updates and enhancements. Related content Hydrothermal alteration mapping of
WebbLaser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) analyses of epidote from propylitic alteration zones around porphyry and skarn deposits in the central Baguio district, Philippines, have shown … Webb8 apr. 2024 · The gold mineralization located in the southern Eastern Desert of Egypt mostly occurs in characteristic geologic and structural settings. The gold-bearing quartz veins and the alteration zones are confined to the ductile shear zones between the highly deformed ophiolitic blocks, sheared metavolcanics, and gabbro-diorite rocks. The …
WebbHome; Details for: Some phase relations in the hydrothermally altered rocks of porphyry copper deposits
WebbFour alteration types based on their mineral assemblages are identified, namely silicification, argillic, propylitic, and sericitization alterations. Silicification is characterized by abundant quartz ± illite ± smectite ± celadonite ± kaolinite. Argillic alteration is characterized by clay minerals such as kaolinite + illite ... inovus ecofairyhttp://ecite.utas.edu.au/139371 inovy compactWebbO ústavu. Organizační schéma; Mapa ústavu; Výroční zprávy; Hospodaření ústavu; Zřizovací listina; Znalecká činnost inovonics wireless panic buttonsWebb12 apr. 2024 · The Kighal porphyry Cu deposit, in the Arasbaran magmatic belt (AMB), is hosted by Late Eocene to Oligocene volcanic rocks and Miocene high–K calc–alkaline … inovonics wireless duressWebbThe local geology consists of outcrops of dacitic porphyry, porphyritic andesite, sandstone (Chimú Formation) and volcanoclastics (Calipuy Formation), a strong hydrothermal alteration is... inovtech emploiWebbAcross the propylitic facies temperature progressively decreases outwards to <250 oC. The oxygen, hydrogen and strontium isotopic composition of alteration minerals support … inovs wilmingtoninovonics wireless pendants en1221s-60