 | | Journal (article/letter/editorial) | | mobilization and fractionation in the coesite-bearing ‘pyrope quartzite’ and related rocks of the Dora-Maira...rocks and mineral separates of pyrope, phengite, and monazite from ‘pyrope quartzite’ were analyzed to study...evaporitic origin from Afghanistan. While the ‘pyrope quartzite’ rocks typically show flat chondrite-normalized...intercalations within ‘pyrope quartzite’ are nearly identical, whereas the ‘pyrope quartzite’ shows variations...variations in total REE contents. Nevertheless, all ‘pyrope quartzite’ spectra are parallel to each other and |  | | Journal (article/letter/editorial) | | were obtained from boudins of coesite-bearing UHP pyrope quartzite and phengite schist enclosed within them... from retrograde assemblages evolving from the pyrope quartzite, and from biotite–phengite orthogneiss...separates from two localities of fresh coesite-bearing pyrope quartzite equilibrated at ca. 3.8 GPa show similar...the second. Retrograde phengite generations from pyrope quartzite crystallized between 3.2 and 1.5 GPa...representing part of the breakdown assemblage of pyrope and formed between 1.9 and 1.2 GPa, documents several |  | | Journal (article/letter/editorial) | | Werner Schreyer Geochemistry of coesite-bearing ‘‘pyrope quartzite’’ and related rocks from the Dora-Maira...Abstract: A complete set of geochemical data for ‘‘pyrope quartzite’’, various phengite-schist and jadeite-bearing...Afghanistan, were also studied. Typically, the ‘‘pyrope quartzite’’ and its retrograde derivative are enriched...the different phengite schists included in the ‘‘pyrope quartzite’’ confirm their close overall kinship...occur as conformable layers and boudins within ‘‘pyrope quartzite’’, in general differ by having lower |  | Tian, Ye, Xiao, Yilin, Chen, Yi-Xiang, Sun, He, Liu, Haiyang, Tong, Fengtai, Yang, Jie-Hua, Schertl, Hans-Peter (2019) Serpentinite-derived low δ7Li fluids in continental subduction zones: Constraints from the fluid metasomatic rocks (whiteschist) from the Dora-Maira Massif, Western Alps. Lithos, 348. 105177 doi:10.1016/j.lithos.2019.105177 | Journal (article/letter/editorial) | | 2. Geological setting and samples RI PT The Brossasco-Isasca Unit (BIU) is a high pressure (HP) to ultrahigh...whiteschists, mainly composed of quartz/coesite, pyrope, kyanite, phengite and talc, occur as lenses in...fine-grained whiteschist samples mainly include pyrope, quartz/coesite, kyanite, phengite, talc and jadeite...jadeite, while in the retrogressed samples, pyrope has been replaced by talc and chlorite (Schertl and...assemblage of Mg-chlorite + quartz instead of a pyrope + coesite UHP assemblage in the Western Alps. Since |  | | Journal (article/letter/editorial) | | or approaching end-member composition andradite, pyrope, and almandine are measured. Both a natural and...published IR spectra of synthetic end-member katoite, pyrope, and almandine also recorded at low temperature...IR spectra of natural almandine- and pyrope-rich (Dora Maira, Italy) crystals, on the other hand, show... Published IR spectra of certain high-pressure pyrope-rich garnets, both synthetic and natural, are analyzed...spectra of natural nearly end-member andradite, pyrope, and almandine garnets. The spectra are then compared |  | | Journal (article/letter/editorial) | | Micro‑ and nano‑size hydrogrossular‑like clusters in pyrope crystals from ultra‑high‑pressure rocks of the...contain coesite and nearly end-member composition pyrope, M g3Al2Si3O12, making this locality petrologically... Structural O H-, loosely termed “water”, in pyrope crystals of different composition has been investigated...Hydrogrossular-like clusters are also present in a synthetic pyrope with a minor Ca content grown hydrothermally at...interpret experimental results. OH incorporation in pyrope of different generations at Dora-Maira is discussed |  | | Journal (article/letter/editorial) | | rocks from the Dora Maira Massif, Western Alps, Italy-ll: what is the age of the ultrahigh-pressure metamorphism...Five zircon samples, 4 from pyrope megacrysts and 1 from fine-grained pyrope quartzite lenses in the metapelites...from sialic Hercynian rocks. E1lenbergerite from pyrope megacrysts and monazite from the fine-grained ground...temperatures than that of zircon. S i n - N d data from a pyrope megacryst give an errorchron corresponding to an...ultrahighpressure metamorphism. Experimental data suggest that pyrope and quartz/coesite as well as ellenbergerite formed |  | | Journal (article/letter/editorial) | | 536–547, 2015 Cation order-disorder in Fe-bearing pyrope and grossular garnets: A 27Al and 29Si MAS NMR...synthetic grossular-rich [(Ca,Fe)3(Al,Fe)2Si3O12] and pyrope-rich [(Mg,Fe)3Al2Si3O12] garnets were investigated...spectra were collected on Fe2+-bearing grossular- and pyrope-rich garnets with up to 25 mol% almandine component...reported previously for natural, relatively low-Fe2+ pyrope garnets by Stebbins and Kelsey (2009). Additional...Keywords: NMR spectroscopy, Mössbauer spectroscopy, pyrope, grossular, almandine, garnet, paramagnetic shifts |  | | Book (edition) | | Republic). W.D. Birch (Australia), Elena Bonaccorsi (Italy), Ernst A.J. Burke (Netherlands), L.J. Cabri (Canada)...M. Dcliens (Belgium). Giancarlo Delia Ventura (Italy), T.S. Ercit (Canada). Alexander Falster (USA)....(Canada). L.A. Groat (Canada). Alessandro Guastoni (Italy), William A. Henderson. Jr. (USA). D.D. Hogarth...(ltaly). Igor Pekov (Russia), atale Perchiazzi (Italy). Ole V. Petersen (Denmark). Fedcrico Pezzotta (ltaly)...Almandine, FerAti(SiO.) 3, cub., forms two series, with Pyrope and with Spessarti Alabanda, Caria, Aydin, Turkey |
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Masueria, Gilba Valley, Brossasco, Cuneo Province, Piedmont, Italy