 | | Journal (article/letter/editorial) | | 899–908 Intergrowth of graphite within phlogopite from Finero ultramafic complex (Italian Western Alps):...from the Finero lherzolite (Italian Western Alps) revealed nanometric intergrowths of graphite-like layers...layers. The intergrowths consist of 4 to 6 graphite-like layers (c » 3.3 Å) with the basal plane parallel...mantle-derived ultramafic rocks. A Raman analysis confirms the presence of a graphite-like phase intergrown...data point to a primary origin of the phlogopite-graphite intergrowths and suggest simultaneous crystallization |  | | Journal (article/letter/editorial) | | Tre, Largo S. Leonardo Murialdo 1, I-00146 Roma, Italy ABSTRACT The crystal structure of gem-quality pargasite...in the principal OH-stretching region shows a complex envelope that can be resolved into six bands by...INTRODUCTION Baffin Island is situated north of the province of Quebec, in the newly formed Nunavut Territory...than was the case for pargasite of the Finero ultramafic complex characterized by Oberti et al. (1995)...al. (1995) that (Mg,Al) disorder in pargasite at Finero is induced by the chemical composition of the amphibole |  | | Journal (article/letter/editorial) | | Bicocca, Piazza della Scienza 4, 20126 Milano, Italy *Corresponding author, e-mail: nadia.malaspina@unimib...Studi di Milano, via Botticelli 23, 20133 Milano, Italy Abstract: C-O-H fluids are released by dehydration...three case studies of garnet-bearing ultramafic rocks (Ulten zone, Italy; Sulu, China; Bardane, Norway), which...lavas and their mantle sources), the studied ultramafic rocks define a trend of decreasing f O2 with...and C polymorphs (e.g., phlogopite þ magnesite þ graphite/diamond) have also been found in polyphase inclusions |  | Li, Chengxiang, Wang, Rucheng, Xu, Huifang, Lu, Xiancai, Konishi, Hiromi, He, Kun (2016) Interstratification of graphene-like carbon layers within black talc from Southeastern China: Implications to sedimentary talc formation. American Mineralogist, 101 (7) 1668-1678 doi:10.2138/am-2016-5600 | Journal (article/letter/editorial) | | Formation were discovered in Guangfeng County, Jiangxi Province, southeastern China. The black talc ore exhibits...carbonaceous material, instead of perfectly structured graphite or graphene. Isolated graphene-like carbon interlayers...minerals are common components of altered mafic and ultramafic rocks, sediments, and soils, and they form through...2″; E 118°15′10.2″) in Guangfeng County, Jiangxi Province, China. Oolitic samples were selected as the representative...black talc (Fig. 4). For perfectly crystallized graphite, the Raman spectrum shows a strong sharp first-order |  | | Journal (article/letter/editorial) | | 99 www.elsevier.com/locate/lithos The fate of graphite in prograde metamorphism of pelites: An example...November 2005 Abstract Graphite-bearing slates and phyllites (0.4–1.2 vol.% graphite) are progressively metamorphosed...reaction at 625 8C (forming Al2SiO5 + K-feldspar). Graphite persists to the highest grades and shows no significant...decrease in the highest grade rocks. Variable graphite abundance in rocks at the same grade reflects...primary sedimentological heterogeneity. Texturally, graphite grains and aggregates in the rock matrix become |  | | Journal (article/letter/editorial) | | DI MILANO, VIA MANGIAGALLI 34, I-20133 MILANO, ITALY RECEIVED SEPTEMBER 14, 2011; ACCEPTED SEPTEMBER...al., 2002; Scambelluri et al., 2008), Ulten and Finero in the Italian Alps (Zanetti et al., 1999; Sapienza...occurring as diamond in ultra-HP peridotites and as graphite in lower-P peridotites (e.g. van Roermund et al...al., 2002; Naemura et al., 2009). However, graphite and diamond may occur as accessory phases more frequently...Microdiamonds and nanoscale graphite interlayered in phlogopite (e.g. Finero peridotite, Ferraris et al |  | | Journal (article/letter/editorial) | | Sciences, Via Valperga Caluso 35, I-10125 Torino, Italy 3C.N.R., Institute of Geosciences and Georesources...c/o DSMP, Via Valperga Caluso 35, I-10125 Torino, Italy 2Department Abstract: Chemically zoned phengite...Brossasco-Isasca Unit (Dora-Maira massif, Western Alps - Italy) were investigated by scanning, transmission and...electron microscopies (SEM-TEM-AEM), revealing a complex nano-structure within the crystal cores. Diffraction...(TEM-AEM) revealed, at the nanometer scale, even more complex patterns in mica subsolidus reactions. At nanoscale |
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