Hydrothermal chloritoid
Webhydrothermal alteration on the sea floor, greenschist facies metamorphism accompanied by exchange with Dalradian metamorphic fluids, as well as near-surface exchange with meteoric fluids (Ikin and Harmon 1983; Masters et al. 2000). In summary, the HBC was em-placed by thrust motion during the Grampian Orogeny, Weblate in the paragenetic sequence and related to rophyllite and chloritoid. Phillips (1987) and Wall-some form of hydrothermal activity (e.g., Feather mach and Meyer (1990) derived metamorphic tem-and Koen 1975). Although some researchers favor a peratures in the relatively wide range of 300–
Hydrothermal chloritoid
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http://portergeo.com.au/database/mineinfo.asp?mineid=mn1763 Web10 jun. 2003 · Geochemistry and origin of chloritoid schist from the Alpi Apuane, Italy: evidence of a prevailing lateritic signature Franceschelli, Marcello; Puxeddu, Mariano; …
http://archive.nstl.gov.cn/Archives/browse.do?action=viewDetail&articleID=5f1e39c07dae2a5f&navig=9565bcbb40dbfbe9&navigator=category&flag=byWord&subjectCode=null&searchfrom=null WebTwo Occurrences of Chloritoid as a Hydrothermal Mineral in Igneous Rocks J. K. Gustafson. J. K. Gustafson Boulder, Colorado. Search for other works by this author on: …
WebChlorite forms by the alteration of mafic minerals such as pyroxenes, amphiboles, biotite, staurolite, cordierite, garnet, and chloritoid. Chlorite can also occur as a result of … Webnature of the early hydrothermal stage, and point to probable admixture of exsolved magmatic fluid phase in the early hydrothermal fluids. Keywords: potassic feldspar, celsian, amphibole, granodiorite, hydrothermal alterations, Central Bohemian Plutonic Complex Received: January 17, 2008; accepted April 2, 2008, handling editor J. Konopásek 1.
WebChlorite forms by the alteration of mafic minerals such as pyroxenes, amphiboles, biotite, staurolite, cordierite, garnet, and chloritoid. Chlorite can also occur as a result of hydrothermal alteration of any rock type, where recrystallization of clay minerals or alteration of mafic minerals produce chlorite.
http://www.jgeosci.org/content/jgeosci.021_2008_1_zacharias.pdf topmost cells of a tabular datasetWebNamed for its superficial resemblance to chlorite, chloritoid is characterized by its dark green to gray-green color. It has a hardness of 6.5 and exhibits many optical qualities … topmost chemical \\u0026 paper corpWebMineral Group: Chloritoid group. Occurrence: In regionally metamorphosed pelitic sediments and schists in the biotite, garnet, and lower grade staurolite zones; in quartz … topmost appWebS339 26 - Chloritoid schist. Sample was called a chloritoid-garnet schist before 2010 but there doesn't appear to be any garnet in it. Sample was renamed Chloritoid Schist after … topmodel diy paper fun book flower berryWeb20 aug. 2024 · Hydrothermally altered sediments The hydrothermal sediments in this study have been grouped into four types based on the mineralogy and geochemistry (following … topmost cleaning supplies memphis tnWebCopyright2024-2025 Mineral Geochemistry Data Information System (MGDIS). All Rights Reserved. 黔ICP备2024000588号 topmost clock appWebCritical to the success of the hydrothermal process in producing gold deposits were the widespread local concentrations of C and Fe on unconformity surfaces, the reef packages, the major thrust faults adjacent to each goldfield, source rocks of greenstone-like character that were once at (sub)-greenschist facies grade with assemblages that … topmost consulting co. ltd