Hydrothermal alteration中文
WebHydrothermal mineral deposits are accumulations of valuable minerals which formed from hot waters circulating in Earth's crust through fractures. They eventually create metallic -rich fluids concentrated in a selected volume of rock, which become supersaturated and then precipitate ore minerals.
Hydrothermal alteration中文
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Web1 jan. 2024 · Hydrothermal alteration involves the replacement of primary glass and minerals with alteration minerals stable at the conditions of alteration, generally in the temperature range of 50–400 °C. Hydrothermal alteration is sometimes referred to as low-grade metamorphism or metasomatism. The physical and chemical changes leading to … Web3 nov. 2024 · In this context, samples from hydrothermal alteration zones were collected from the study area. The mineralogical compositions of studied samples were determined by using X-ray diffraction (XRD ...
Web7 jul. 2024 · The hydrothermal alteration associated with the shear zones reveals the presence of the chemical ion exchange between the host/wall rocks and hydrothermal fluid providing new different alteration minerals forming several zonation based on the fluid composition, temperature, pH, and Eh as well as the host rock compositions (Meyer and … Web"hydrothermal"中文翻译 adj. 热液的，热水(作用)的。 "alteration"中文翻译 n. 1.变更，改变，变化。 2.【地质学；地理学】蚀变 ... "composite hydrothermal alteration"中文翻译 …
WebHydrothermal alteration involves water–rock interaction at temperatures above 50 °C in association with plutonism or volcanic activity. The alteration is usually restricted … WebHydrothermal fluid itself or hydrothermal fluid circulation causes physicochemical changes in the rocks through which it circulates, which is known as “hydrothermal alteration”. …
WebFigure \(\PageIndex{4}\): Black smoker hydrothermal vent with a colony of giant (6’+) tube worms. Some hydrothermal alterations remove elements from the parent rock rather than deposit them. This happens when seawater circulates down through fractures in the fresh, still-hot basalt, reacting with and removing mineral ions from it.
WebMetasomatism (from the Greek μετά metá "change" and σῶμα sôma "body") is the chemical alteration of a rock by hydrothermal and other fluids. It is the replacement of one rock by another of different mineralogical and chemical composition. The minerals which compose the rocks are dissolved and new mineral formations are deposited in their place. cabq human resourcesWeb24 apr. 1997 · Abstract. The origin of the gold mineralization in the Witwaterstrand basin of South Africa—the largest known gold province—has been controversial for decades, with arguments favouring ... cabq office of civil rightsWeb28 feb. 2024 · This is probably supported by well-developed hydrothermal alteration of ferrodolomitization, pyritization, hydromicazation and sericitization [12,13,31,32,33,34], and the change in mineralization environment with hydrothermal fluid activity, which can result in activation of the early U orebody and superimposed enrichment mineralization [12,13]. cabq mayor\\u0027s officeWeb4 feb. 2024 · The fluids exist as largely unconfined systems in meteoric, seawater, and basinal settings, or locally and intermittently confined systems in magmatic, metamorphic, and basinal settings, and they... cabq learningWeb4 mei 2024 · Hydrothermal alteration of the Toki granite progressed through the following successive processes: 1) biotite chloritization, 2) plagioclase alteration, and 3) precipitation of carbonate minerals . The alteration processes of biotite chloritization and plagioclase alteration occurred at temperatures of 180–350°C within the rock body [ 23 ]. cabq new employee orientationWebHydrothermal alteration can occur in a variety of geological settings, such as volcanic environments, hot springs, and geothermal systems. The fluids involved in … cluster westWebHydrothermal alteration minerals: what can they tell us about ore-forming processes? A case study from the world-class Panasqueira deposit, PortugalSpeaker: ... cabq operating status