Hydrothermal alteration mineral assemblages
Habitability of hydrothermal systems at Jezero and Gusev Craters as constrained by hydrothermal alteration of a terrestrial mafic dike
... intense alteration with oxi- dation of the igneous minerals (now no longer present) and precipita- tion of secondary ...these mineral assemblages in Martian (me- teorite) compositions suggest ...
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INVESTIGATION OF HYDROTHERMAL ALTERATION PROCESSES IN THE TROODOS OPHIOLITE AND THE ABITIBI GREENSTONE BELT
... the hydrothermal alteration processes that affected two suites of rock ...important mineral deposits. In addition, hydrothermal alteration of the sub-seafloor crust is an important ...
346
Differential alteration of basaltic lava flows and hyaloclastites in Icelandic hydrothermal systems
... basaltic hydrothermal systems had been described in many studies (Table ...single mineral, but a mineral family which includes montmorillonites, nontronites, beidellites, saponites, and ...
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Petrography and Mineral Chemistry of Magmatic and Hydrothermal Biotite in Porphyry Copper-Gold Deposits: a Tool for Understanding Mineralizing Fluid Compositional Changes During Alteration Processes
... and alteration types at Batu Hijau deposit conform to those from other porphyry Cu deposits, although absolute concentrations vary considerably among ...chlorite-sericite alteration zones may suggest that ...
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The mineralisation, alteration paragenesis and hydrothermal fluids at the Geita Hill gold deposits, NW Tanzania
... primary mineral both in the metamorphic assemblage and gold-related hydrothermal alteration ...SEM mineral identification of alteration assemblages, SWIR measurements and ...
187
Hydrothermal alteration of eudialyte hosted critical metal deposits : fluid source and implications for deposit grade
... eudialyte alteration was associated with loss of HFSE from the eudialyte crystal ...of alteration parageneses in Ilímaussaq, is associated with up to 20% loss of Zr and up to 20–30% loss of Ta, Nb, Y and ...
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Mapping of Hydrothermal Alteration in Mount Berecha Area of Main Ethiopian Rift using Hyperspectral Data
... map hydrothermal alteration mineralogy in Mount Berecha area of Main Ethiopian Rift ...for mineral and rock ...grained mineral assemblages which occur in the study area, including ...
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Hydrothermal Alteration Mineralogy Associated with Gold Mineralization in Buladu Area, Gorontalo, Northern Sulawesi, Indonesia
... on hydrothermal alteration mineralogy associated with one of the prospects in the region, namely Buladu gold prospect that for years has been operated by local artisanal ...Resulting assemblages of ...
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Application of Spectral Analysis in Mapping Hydrothermal Alteration of the Northwestern Part of the Kerman Cenozoic Magmatic Arc, Iran
... important hydrothermal alteration minerals, and Figure 4b shows the secondary iron oxides/hydroxides bearing minerals of relevance to the present ...The hydrothermal alteration zones are ...
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Satellite remote sensing for hydrothermal alteration minerals mapping of subtle geothermal system in unexplored aseismic environment
... mapping hydrothermal alteration indicator minerals as proxy for detecting subtle GT targets in unexplored aseismic ...known alteration zones remotely detectable on the ...propylitic alteration ...
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Geology, hydrothermal alteration, geochemistry, mineral geochemistry, and alteration textures of the lithocap at Bantug, Negros Philippines
... selective alteration process related to high ...steam-heated alteration were also recognised in the area; outcrops and float were found on river beds, cliffs, and fallen blocks throughout the ...
403
Identification of Hydrothermal Alteration Minerals
... remote sensing image classification technology [ 48 – 52 ], was trained using alteration sample data by. 153[r] ...
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Hydrothermal alteration of the Kemi layered intrusion
... amphibole alteration, the increase would be related to proximity to layers of amphibole ...serpentine alteration in peridotites was observed, all of the four serpentinite samples were located in the areas ...
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Effects of Hydrothermal Alteration on the Geomechanics of Degradation at the Bagdad Mine, Arizona
... bearing minerals, it also affects other minerals present in the rock, but whether the PLS-related geotechnical issues at sites relate to acid-mineral reactions weakening the rock, or to increased pore pressure, ...
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The significance of hydrothermal alteration zones for the mechanical behavior of a geothermal reservoir
... systematically with the faulting regimes. The highest b-values are found in normal faulting regimes (up to 1.2), whereas the lowest b-values occur in thrust events (as small as 0.6), and strike-slip events are in ...
21
Focussed hydrothermal alteration in upper crustal oceanic faults on Macquarie Island
... Figure 5.34: Outcrop geology plan of the Caroline Cove foreshore showing the location of the fault-bound domain of the massive and veined, chlorite-quartz-pyrite (CQP) alteration facies.[r] ...
305
Focussed hydrothermal alteration in upper crustal oceanic faults on Macquarie Island
... non trends are similar to those associated with other fractionated MORB suites, e.g., basalts from the SMARK area (Meurer et al., 2001) and the Hayes Transform region (Smith et al., 19[r] ...
308
Anaysis of Fe in Seepage Water and Precipitates around a Hydrothermal Alteration Zone
... thermal alteration zone cutting the bedrock, and cropping out in the upper parts of the ...the hydrothermal alter- ation zone located above the ...the hydrothermal alteration ...
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Mineral assemblages group of major and associated mineral phases in the Kadiica porphyry copper deposit, Eastern Macedonia
... Copper mineralization in quartzlatites is developed as stockworks and dissemination. The known cop- per mineralization mainly occurs as supergene chalcocite and lesser covellite coatings on pyrite and rare chalcopyrite. ...
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Structure, volcanic setting, hydrothermal alteration and genesis of the Thalanga massive sulphide deposit
... The polymict volcanic breccia is composed of angular to sub-rounded dacite clasts, sub-rounded siliceous QFP clasts and rounded aphyric siliceous rhyolite clasts in a quartz and feldsp[r] ...
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