Hydrothermal titanite
Web1 nov. 2024 · Titanite (CaTiSiO 5) is a common accessory mineral in igneous rocks and hydrothermal deposits (Gao et al., 2012; Kohn, 2024). The appreciable concentrations … Web10 nov. 2024 · The hydrothermal titanite grains yield reproducible uncorrected U–Pb ages ranging from 129.7 ± 0.7 to 132.1 ± 2.7 Ma (2σ), with a weighted mean of 131.2 ± 0.2 Ma ...
Hydrothermal titanite
Did you know?
Web1 feb. 2016 · This study provides new insights into the relation between thermally induced structural reorganization and the macroscopic mechanical properties of radiation-damaged titanite. The natural sample contains ca. 30% amorphous fraction. Low-temperature annealing affects only slightly the sample stiffness and leads to a softening resulting from … Webtitanite is sensitive to temperature, pressure, oxygen fugacity, and melt and fluid compositions. As such, titanite can be a valuable indicator of magmatic and …
Web10 jul. 2024 · The Kilmar district has historically been interpreted to have a hydrothermal replacement origin [3,4], but these deposits have not been evaluated in the context of modern depositional models for magnesite . ... 206 Pb/ 207 Pb ages of titanite from marbles are mostly ca. 1120–1110 ... Web1 mrt. 2024 · Titanite (CaTiSiO 5) is a common accessory mineral not only in igneous and metamorphic rocks (e.g., Deer et al., 1982; Frost et al., 2000), but also in a variety of hydrothermal ore deposits, such as skarn, IOCG and porphyry deposits (e.g., Cao et al., 2015, Cao et al., 2024; Li et al., 2010; Ngo et al., 2024 ).
Web12 apr. 2024 · Rutile is the main Ti–bearing phase in altered rocks present in many hydrothermal deposits that forms during the breakdown of titanite, biotite, and hornblende (Su et al. 2024; Yang et al. 2024). It is widely reported that a significant pressure regime (1.3 to 1.5 GPa) is necessary for crystallization of magmatic rutile within calc–alkaline … WebUsing hydrothermal titanite geochronology to discriminate between porphyry and non-porphyry related propylitic alteration in the Oyu Tolgoi porphyry district...
Web23 aug. 2024 · In our previous study on petrogenesis of quartz syenite and granite porphyry, the host rocks of the Late Mesozoic Shapinggou Mo deposit in the Qinling–Dabie orogenic belt, we found that the initial Sr isotopic composition of the host rocks is strongly affected by the degree of K-alteration. Here, we provide further isotopic evidence of the host rocks …
WebTitanite formed at that time, from dissolution-reprecipitation reactions in large rutile crystals, is less depleted in LREE, as a result of the dominance of Cl - in hydrothermal waters. … gretchen wilson all jacked up 2008WebHydrothermal titanite from the Chengchao iron skarn deposit: temporal constraints on iron mineralization, and its potential as a reference material for titanite U–Pb dating. Mineralogy and Petrology, 111(4):593-608. Li XC, Harlov DE, Zhou MF, Hu H. 2024. Metasomatic modification of Sr isotopes in apatite as a function of fluid chemistry. gretchen wilson albumsWeb22 dec. 2024 · During the early period of ca. 830–823 Ma, the W-bearing hydrothermal fluids exsolved from the early-phase reduced granitic magmas firstly reacted with biotite to form chlorite, clinozoisite, epidote, and titanite in the early-phase fine-grained granodiorite (stage 1) and then gave rise to endo-contact greisenization followed by exo-contact … gretchen wilson all jacked up mailWeb15 okt. 2015 · Titanite formed at that time, from dissolution-reprecipitation reactions in large rutile crystals, is less depleted in LREE, as a result of the dominance of Cl − in hydrothermal waters. Following that event, F − -dominated hydrothermal waters prevailed again, resulting in more LREE depletion in previously formed titanite and in neoformed … fiction il professoreWeb1 aug. 2009 · La titanite magmatique des roches granitiques protérozoïques du sud-est de la Suède a subi les effets d’une dissolution hydrothermale et d’un remplacement par … gretchen wilson all jacked up album coverWebby hydrothermal titanite with low concentrations of high field strength elements (HFSE). Magmatic titanite has an average δ18O of 6.0‰ and post-magmatic titanite is 6.2‰, as analyzed by SIMS. Average Zr-in-titanite temperatures are also similar, with 718 °C for magmatic and 711 °C for hydrothermal titanite. These observa - gretchen wilson all jacked up liveWebThe alteration of titanite is most pronounced in red-stained granitic rock zones enriched in partly dissolved biotite and magnetite, which could have acted as local source of Al, Fe and Mg needed for chlorite formation. … gretchen wilson all jacked up album song list