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We describe a series of phengite K–Ar analyses and X‐ray diffraction (XRD) analyses of carbonaceous materials in pelitic schists from the metamorphic sequence in the …
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3.7 x 1.6 x 0.6 cm. At first glance, this specimen of "Phengite" (a series between Muscovite and Celadonite) is an ordinary Mica crystal, but when strongly backlit, and viewed from the side, one can see the most intense internal blue-green color. I'm told that "Phengite" was at one time a valid species, and the color is due to the presence of ...
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rincian crusher pipa phengite. Progress in the study of phengite geobarometry — Phengite meltingrdissolution occurs between 9008C and 9758C at 8 GPa and is associated with the appearance of kyanite in the phase assemblage The formation of K hollandite is accompanied by.
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The heterogeneity of phengite in the schists studied is likely due to the retrogressive formation of phengite grains in extremely restricted domains, as discussed by Radvanec e t al. (1994), and Itaya and Fujino (1999) for the Sanbagawa schists in Central Shikoku.
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The near- and mid-infrared reflectance spectroscopy of phengite can provide valuable information about phengite abundance and phengite mineral chemistry (Mookherjee and Redfern, 2002). For example, we show how the near-infrared spectrum of phengite between 2.190 and 2.230 μm can be used to identify phengite and analyze its aluminum content.
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Phengite carries essentially all of the LILE in otherwise mafic eclogite, amphibolite, and garnet blueschist blocks that are enriched in these elements compared with MORE. It …
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White mica is an important reservoir of boron (B) in subducted metasedimentary rocks. To quantify the effect of phengite breakdown on B release and transfer, we investigated the replacement processes of phengitic mica and associated element redistribution in exhumed ultra-high pressure (UHP) impure marbles from the Dabie terrane, China.
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White mica is an important reservoir of boron (B) in subducted metasedimentary rocks.To quantify the effect of phengite breakdown on B release and transfer, we investigated the replacement processes of phengitic mica and associated element redistribution in exhumed ultra-high pressure (UHP) impure marbles from the Dabie terrane, China.Three types of …
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Among them, phengite in metabasites and metapelites usually contains >90% of the bulk Ba budget (Sorensen et al., 1997, Zack et al., 2001, Spandler et al., 2003), thus is the most important source that could deliver Ba and water to depth (Bebout, 2007). ... then crushed in a corundum jaw crusher and powdered in an agate mortar to 200 mesh for ...
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The studied meta-carbonates consist of calcite, which is accompanied by magnetite, phengite, quartz and occasional olivine (Fig. 3). The samples are foliated with …
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The significant Ba isotope fractionation during phengite breakdown revealed in this study is important for understanding the Ba isotopic systematics of the subduction zones.
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The website, THESCENTCRUSHER, is an independent, fan-created platform dedicated to showcasing and sharing content related to Scent Crusher. It has no official ties, sponsorship, or connection with the actual Scent Crusher. All trademarks, logos, and brand names mentioned are the property of their respective owners.
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Following and extending the early work of Velde (1965) the pressure-temperature dependence of the compositions of potassic white micas coexisting with K-feldspar, quartz, and phlogopite in the model system K2O-MgO-Al2O3-SiO2-H2O was investigated up to fluid pressures of 24 kbar by synthesis experiments. There is a strong, almost linear increase of the Si content per formula …
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Phengite is a common metamorphic mineral stable in a wide pressure range. The dependence of pressure on silicon content established in the mid-20th century allowed us to …
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sbm phengite crusher south design.md; Find file Blame History Permalink lab · 09ddb561 chengxinjia authored Nov 03, 2022. 09ddb561 ...
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The samples were crushed with a jaw crusher and then sieved. Phengite was separated from the 80–100, 100–150, 150–200, or 200–250 mesh size fractions of the samples. ... In contrast, the phengite included in rigid garnet, which has a high Si value, does not release Ar, as documented by Gouzu et al. (2006). They revealed that the ...
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Blueschist‐bearing Osayama serpentinite melange develops beneath a peridotite body of the Oeyama ophiolite which occupies the highest position structurally in the central Chugoku Mountains. The blueschist‐facies tectonic blocks within the
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Alurgite is the old name for pink Mn-rich muscovite and phengite (Breithaupt 1865; Meixner 1939).In their nomenclature of the micas, Rieder et al. suggest that the term alurgite should be abandoned in favor of the term manganoan muscovite or phengite.However, since manganese in these micas is mostly Mn 3+ instead of Mn 2+ (e.g., Knurr and Bailey 1986), this …
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At Olympic Dam, phengite is found within the brecciated, intensely altered, ore-bearing lithologies, and in the unbrecciated, less-altered, barren rocks that surround the deposit (Roberts and Hudson, 1983).Despite its ubiquitous presence, little information is available about the composition of phengite or how it can be detected using near- or mid-infrared reflectance …
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Phengite inclusions were extracted by crushing the cleaned garnets in a steel hand crusher followed by handpicking under a binocular microscope. A total of 0.2 to 2.1 mg of white mica was obtained for each sample. The size of the included micas varies from less than 100 μm (sample 09CDM105) to a maximum size of ∼300 μm (sample 09CDM110).
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