	Ballevre, M., Pitra, P., Bohn, M. (2003) Lawsonite growth in the epidote blueschists from the Ile de Groix (Armorican Massif, France): a potential geobarometer. Journal of Metamorphic Geology, 21 (7) 723-735 doi:10.1046/j.1525-1314.2003.00474.x	Journal (article/letter/editorial)
	epidote blueschists from the Ile de Groix (Armorican Massif, France): a potential geobarometer M. BALLEVRE...Université de Rennes I, F-35042 Rennes CEDEX, France (Michel.Ballevre@Univ-rennes1.fr) 2 Microsonde...Plouzané, France ABSTRACT The garnet blueschists from the Ile de Groix (Armorican Massif, France) contain...Key words: Armorican Massif; blueschist; Ile de Groix; lawsonite pseudomorph; P–T history. INTRODUCTION...& Sindern, 2002) and the Variscan belt (Ile de Groix: Cogné et al., 1966; Felix & Fransolet, 1972).
	TRIBOULET, Cl., AUDREN, Cl. (1988) Controls on P?T?t deformation path from amphibole zonation during progressive metamorphism of basic rocks (estuary of the River Vilaine, South Brittany, France) Journal of Metamorphic Geology, 6 (2) 117-133 doi:10.1111/j.1525-1314.1988.tb00412.x	Journal (article/letter/editorial)
	rocks (estuary of the River Vilaine, South Brittany, France) CI. TRIBOULET, Laboratoire de Pitrologie...Marie Curie, 4 place Jussieu, 75252 Paris Cedex, France CI. AUDREN, Centre Armoricain d'Etude Structurale...Rennes, Campus de Beaulieu, 35042 Rennes Cedex, France Abstract. Edeniteltremolite and edenite/magnesio-hornblende...orogeny; microstructures; P-T-t-d paths; South Brittany, France; stacking effect during collision processes;...how a set of simple reactions beween tremolite/actinolite, actinolitic hornblende and Mg-hornblende can
	Bernard-Griffiths, J., Carpenter, M.S.N., Peucat, J.J., Jahn, B.M. (1986) Geochemical and isotopic characteristics of blueschist facies rocks from the Île de Groix, Armorican Massif (northwest France) Lithos, 19 (3) 235-253 doi:10.1016/0024-4937(86)90025-3	Journal (article/letter/editorial)
	facies rocks from the ile de Groix, Armorican Massif (northwest France) J. BERNARD-GRIFFITHS, M.S.N....LITHOS Universitd de Rennes 1, 35042 Rennes C~dex (France} Bernard-Griffiths, J,, Carpenter, M.S.N., Peucat...blueschist facies rocks from the he de Groix, Armorican Massif (northwest France). In: W.L. Griffin (Editor), Second...Sampling includes the main rock types exposed on Groix, concentrating on those metabasic rocks with least...alkali-basalt debris. The volcanicsedimentary assemblage on Groix is suggestive of ocean-island magmatic activity
	Makanjuola, A. A., Howie, R. A. (1972) The mineralogy of the glaucophane schists and associated rocks from �le de Groix, Brittany, France. Contributions to Mineralogy and Petrology, 35 (2) 83-118 doi:10.1007/bf00370922	Journal (article/letter/editorial)
	Schists and Associated Rocks from Ile de Groix, Brittany, France A.A. M a k a n j u o l a * a n d R.A. Howie...were obtained from the metamorphic rocks of lie de Groix, and their chemical, physical, optical and X-ray...composition of the glaucophane schists of Ile de Groix is given i n T a b l e 1. N i n e t y - s e v e...composition of the glaucophane schists of Ile de Groix Phengite Quartz Chloritoid Plagioclase Chlorite...schists Mineralogy consists essentially of talc, actinolite and chlorite with accessory magnetite and mariposite
	El Korh, A., Schmidt, S.Th., Vennemann, T., Ballèvre, M. (2013) Trace element and isotopic fingerprints in HP–LT metamorphic rocks as a result of fluid–rock interactions (Ile de Groix, France) Gondwana Research, 23 (3) 880-900 doi:10.1016/j.gr.2012.07.014	Journal (article/letter/editorial)
	a result of ﬂuid–rock interactions (Ile de Groix, France) A. El Korh a,⁎, S.Th. Schmidt a, T. Vennemann...6118), University of Rennes 1, 35042 Rennes Cedex, France a r t i c l e i n f o Article history: Received...different HP–LT metamorphic rocks of the Ile de Groix were analysed to characterise geochemical ﬁngerprints...variety of metamorphic assemblages on the Ile de Groix is thus directly related to the pre-HP rock composition...retrogression in the western part of the Ile de Groix primarily reﬂects stronger metasomatic intensities
	El Korh, Afifé, Luais, Béatrice, Boiron, Marie-Christine, Deloule, Etienne, Cividini, Damien (2017) Investigation of Ge and Ga exchange behaviour and Ge isotopic fractionation during subduction zone metamorphism. Chemical Geology, 449. 165-181 doi:10.1016/j.chemgeo.2016.11.017	Journal (article/letter/editorial)
	20, F-54501 Vandœuvre-lès- 2 MA Nancy Cedex, France GeoRessources, Université de Lorraine, CNRS, UMR...BP PT ED 70239, F-54506 Vandœuvre-lès-Nancy, France CE Corresponding author: elkorh@crpg.cnrs-nancy...and pelitic micaschists from MA the Ile de Groix* (France), to determine Ge and Ga behaviour and Ge isotope...and retrograde greenschist facies of the Ile de Groix, a well-known latePalaeozoic HP–LT terrane. In this...Geological setting and studied samples The Ile de Groix (France) is a Variscan HP terrain, bearing well-preserved
	TRIBOULET, C., THIÉBLEMONT, D., AUDREN, C. (1992) The (Na?Ca)amphibole?albite?chlorite?epidote?quartz geothermobarometer in the system S?A?F?M?C?N?H2O. 2. Applications to metabasic rocks in different metamorphic settings. Journal of Metamorphic Geology, 10 (4) 557-566 doi:10.1111/j.1525-1314.1992.tb00105.x	Journal (article/letter/editorial)
	7S2S2, Paris Cedex, France 'BRGM SGN CEO, BP 6009, 45060 Orl6ans La Source, France 3Centre Armoricain...Ge'ologie, Universite de Rennes, 35042 Rennes Cedex, France A B S TR A C T In order to illustrate different...the initial magmatic rock, becoming poorer in actinolite relative to the hornblende component in going...frequently invaded by large patches of chlorite and actinolite. Actinolites crystallize in their cores as small...amphiboles are richer in All", plotting astride the actinolite-pargasite tie-line. In spite of the inhomogeneity
	*Boswell, P. G. H. (1924) The Petrography of the Sands of the Upper Lias and Lower Inferior Oolite in the West of England. Geological Magazine, 61 (6) 246-264 doi:10.1017/s0016756800086337*	Journal (article/letter/editorial)
	Monoclinic. audalusite. brookite. ? chiastolite. actinolite. biotite. chlorite. chloritoid. epidote. 2 glauconite...those of chloritoid described from Cornwall and Brittany.1 The refractive index is frequently not stated...properties the glaucophane resembles closely that from Brittany. • Chlorite is not uncommon. The flakes are usually...1889, pp. 214-20; A. Lacroix, Miniralogie de la France, vol. i, 1887-1912, p. 366; C. Barrois, " Sur les...les schistes metamorphiques de File de Groix " : Ann. Soc. geol. du Nord, vol. xi, 1884, pp. 18-71. 2
	*Dudek, K., Kienast, J. R. (1989) Deerite from Ile de Groix, Brittany, France. Mineralogical Magazine, 53 (373) 603-612 doi:10.1180/minmag.1989.053.373.11*	Journal (article/letter/editorial)
	Deerite from Ile de Groix, Brittany, France K. DUDE~ Academy of Mining and Metallurgy, Institute of Geology... Curie, 4 place Jussieu, 75252 Paris Cedex 05, France Abstract Deerite has been found in layers of Fe-rich...described in the literature show that the Ile de Groix deerites most closely resemble the Mn-poor, alpine...Sifnos deerites. The P - T conditions of the Ile de Groix metamorphism do not conform with the stability field...metamorphism. KEYWORDS: deerite, metamorphism, Brittany, France Introduction THE hydrous iron-rich silicate
	*Barrois, Chas. (1899) Sketch of the Geology of central Brittany. Proceedings of the Geologists' Association, 16 (3) 101-132 doi:10.1016/s0016-7878(99)80010-8*	Journal (article/letter/editorial)
	JOJ SKETCH OF THE GEOLOGY OF CENTRAL BRITTANY. WITH SPECIAL REFERENCE TO THE WHITSUNTIDE EXCURSION...with its Granulitic Aureole b. GRANITIC MASSES of Morbihan: I. Mass of St. JeanBrevelay; 2. Mass of Grandchamp;...cross the Channel once more and to pay a visit to Brittany, the present notice is offered to the members...idea of its geological structure. The subsoil of Brittany consists of pre-Cambrian and Palreozoic strata...1899,] 8 o '" o z FIG . I.-SKETCH ·!\1AP OF BRITTANY. SHOWING THE CHIEF ANTICLINALS OF THE COU NTRY
	El-Shazly, A. K., Liou, J. G. (1991) Glaucophane chloritoid-bearing assemblages from NE Oman: petrologic significance and a petrogenetic grid for high P metapelites. Contributions to Mineralogy and Petrology, 107 (2) 180-201 doi:10.1007/bf00310706	Journal (article/letter/editorial)
	from Oman, New Caledonia, Seward Peninsula, Ile de Groix, Sifnos and Peloponnese, where G l n + Ctd bearing... E1-Shazly Abbreviations. Ab = Albite; Act = Actinolite; Alto = Almandinc; ai=activity of component "i";...Roever 1956; Zermatt Saas, Bearth 1967; Ile de Groix, Velde 1967). The rarity of this assemblage led...chlorite and paragonite in metapelites from Ile de Groix. Katagas (1980) reached the same conclusion after...Hatat, was metamorphosed to upper pumpellyite-actinolite facies conditions. Zone B, defined by the first
	*Bonney, T. G. (1886) On a Glaucophane-eclogite from the Val d'Aoste. Mineralogical Magazine and Journal of the Mineralogical Society, 7 (32) 1-8 doi:10.1180/minmag.1886.007.32.01*	Journal (article/letter/editorial)
	dusky looking mineral, associated with flakes of actinolite. A clear mineral in larger grains occurs occasionally...glaucophane, and occasionally by ordinary pale-green actinolite. The glaucophane is abundant, and it appears...found by Dr. C. Barrels at the Isle de Groix (Morbihan), Brittany (Ann. Soc. Geol. Nord. XI. p. 45). The
	*Bonney, T. G. (1886) On a Glaucophane-eclogite from the Val d'Aoste. Mineralogical Magazine and Journal of the Mineralogical Society, 7 (32). 1-8 doi:10.1180/minmag.1886.007.32.01*	Journal (article/letter/editorial)
	dusky looking mineral, associated with flakes of actinolite. A clear mineral in larger grains occurs occasionally...glaucophane, and occasionally by ordinary pale-green actinolite. The glaucophane is abundant, and it appears...found by Dr. C. Barrels at the Isle de Groix (Morbihan), Brittany (Ann. Soc. Geol. Nord. XI. p. 45). The
	El Korh, Afifé, Luais, Béatrice, Deloule, Etienne, Cividini, Damien (2017) Iron isotope fractionation in subduction-related high-pressure metabasites (Ile de Groix, France) Contributions to Mineralogy and Petrology, 172 (6) doi:10.1007/s00410-017-1357-x	Journal (article/letter/editorial)
	subduction‑related high‑pressure metabasites (Ile de Groix, France) Afifé El Korh1,2 · Béatrice Luais1 · Etienne...and retrograde greenschists) from the Ile de Groix (France), a Variscan high-pressure terrane, to determine...Pauvres, BP 20, 54501 Vandœuvre‑Lès‑Nancy Cedex, France 2 Unit of Earth Sciences, Department of Geosciences...hydrothermally altered metabasites (Ile de Groix, France) of prograde blueschist and eclogite facies...greenschist facies from the Ile de Groix (Armorican Massif, France), a well-known Variscan HP–LT unit
	Manzotti, Paola, Ballèvre, Michel, Pitra, Pavel, Putlitz, Benita, Robyr, Martin, Müntener, Othmar (2020) The Growth of Sodic Amphibole at the Greenschist- to Blueschist-facies Transition (Dent Blanche, Western Alps): Bulk-rock Chemical Control and Thermodynamic Modelling. Journal of Petrology, 61 (4) doi:10.1093/petrology/egaa044	Journal (article/letter/editorial)
	Géosciences Rennes-UMR 6118, F-35000 Rennes, France; 4Ceská geologická sluzba, Prague 1, Czech Republic...radiating sodic (magnesioriebeckite) and calcic (actinolite) amphiboles; (3) sodic amphibole (magnesiori...E, eclogite; GS, greenschist; PA, pumpellyite–actinolite. Downloaded from https://academic.oup.com/p...wholerock samples were performed (SARM-CRPG, Nancy, France) by titration with potassium dichromate after dissolution...previous magmatic plagioclase and by aggregates of actinolite (XFe ¼ 024–035) and chlorite. Epidote shows
	*(1991) Geochemical studies of detrital heavy minerals and their application to provenance research. Special Publication, 57. Geological Society of London. 31-45 doi:10.1144/gsl.sp.1991.057.01.04*	Report (chapter)
	nsli (1982) in Miocene Molasse sediments of Savoy, France. In an ongoing study of Palaeo- From Morton, A...from the SW Rockall Plateau area, one comprising actinolite, actinolitic hornblende and magnesiohornblende...amphiboles from OligoMiocene Molasse sediments of Savoy, France, has been studied by Mange-Rajetzky & Oberh/insli...the pottery originated in the Massif Central of France. As with pyroxene, the limiting factor in the use...sodic amphiboles from Molasse sediments of Savoy, France, from data of Mange-Rajetzky & Oberhfinsli (1982)
	López-Carmona, Alicia, Abati, Jacobo, Pitra, Pavel, Lee, James K. W. (2014) Retrogressed lawsonite blueschists from the NW Iberian Massif: P–T–t constraints from thermodynamic modelling and 40Ar/39Ar geochronology. Contributions to Mineralogy and Petrology, 167 (3) doi:10.1007/s00410-014-0987-5	Journal (article/letter/editorial)
	Université Rennes 1 and CNRS, 35042 Rennes Cedex, France been constrained at ca. 2.2 GPa and 560 °C. Exhumationrelated...Similar data obtained from the blueschists of Ile de Groix (Armorican Massif; Bosse et al. in Chem Geol 220:21–45...of the Ceán Unit and the Upper Unit of Ile de Groix along the Ibero-Armorican Arc and suggest that these...medium-grained (0.025–0.3 mm) and are either actinolite (pale green hue; type 2a) with hornblende rims...(blue-green to deep green; type 2). Coexisting actinolite and hornblende are commonly found together in
	MALUSKI, HENRI, PATOCČKA, FRANTIšEK (1997) Geochemistry and 40Ar–39Ar geochronology of the mafic metavolcanic rocks from the Rýchory Mountains complex (west Sudetes, Bohemian Massif): palaeotectonic significance. Geological Magazine, 134 (5) 703-716 doi:10.1017/s0016756897007498	Journal (article/letter/editorial)
	Montpellier 2, Place E. Bataillon, 34095 Montpellier, France † Geological Institute of the Academy of Sciences...of the Rýchory Mountains complex consist of actinolite, epidote and chlorite with subordinate albite...Massif (Munhá, Ribeiro & Ribeiro, 1984) and l’Ile de Groix in the Armorican Massif (Triboulet, 1974) to the...the Centre National de la Recherche Scientifique (France). The authors are deeply obliged to Dr Christian...Pin (Université Blaise Pascal, ClermontFerrand, France) who reviewed the paper and discussed details.
	*(2005, October) Richard Tayler Individual Minerals Catalogue* 98. Richard Tayler Minerals**	Catalog/List
	pegmatite. Haapaluoma Finland £8 small 2x3 8. ACTINOLITE attractive small display piece of fine pale green...second cleavage (lineation) lie de Crozon, Brittany France 6x2.5 inches and about 4mm thick £4 What you...grained, throughout out green-grey rock. (Groix Island, Brittany, France) 2x2 £2 2x3 £4 98. ALBITE PEGMATITE
	Nicollet, Christian (1989) L'eclogite de Faratsiho (Madagascar): un cas exceptionnel de métamorphisme de haute-P-basse-T au Protérozoïque supérieur. Precambrian Research, 45 (4) 343-352 doi:10.1016/0301-9268(89)90069-7	Journal (article/letter/editorial)
	5, Rue Kessler, UA 10, Clermont-Ferrand, 63038 (France) (Re~u le 7 octobre 1988; rdvision accept~e le...des gros grenats (Nbre d'Oxy: 24); (4) Na-A1 actinolite (II) en ~quilibre avec la paragen~se ~clogitique;...) early actinolite (I) included within core of the coarse garnets; (4) Na-Al-rich actinolite (II) in...(3) early actinolite inclusions within the core of the coarse garnet, (4) Na-Al-rich actinolite of the eclogite...and (2) Core and rim; (3) Ga-actinolite (I); (4) Ga-AI-Na-rich actinolite (II); (5) Gabarroisite (III);
	*Barker, A,. J. (2014) A key for identification of rock-forming minerals in thin-section. CRC Press.*	Book
	face (ie end-section). Granite; St. Jacut, Brittany, France. (d) Anhedral spessartine garnet; Nisserdal...Chlorite Chloritoid Cordierite Muscovite Hornblende Actinolite Lawsonite Plagioclase (albite) K-feldspar Pyrite...in relation to particular optic axes, such as actinolite (Fig. 1.6c), and piemontite (Fig. 1.6d). PPL...indicate the polarisation vibration directions. c) Actinolite crystals in a range of orientations, showing...β = green, γ = dark green/blue-green; Epidote-actinolite hornfels; locality unknown. d) Piemontite, showing
	*(1989) Alphabetical Index. Mineralogical Magazine, 53 (373) 667-672 doi:10.1180/minmag.1989.053.373.39*	Journal (article/letter/editorial)
	at the end. ABUMERE,O. E., see WALKER,G., 201 Actinolite, flexibility in asbestiform fibres, 327; skarn...Alkaline volcanics, magma mixing in, Massif Central, France, 43 ALLAN, J. E. M., COEY, J. M. D., SANDERS, I...compositions of, in volcanics, Massif Central, France, 43; potassium in, a TEM study, 311 Conversion...Decomposition of Li-sodalite, 380 Deerite, Brittany, France, 603 DE GRAVE, E., see ZWANN, P. C., 473 DE...S., 376 DUDEK, K., and KIENAST, J. R., deerite, France, 603 DUNN, P. J., investigated mineral specimens
	Ilnicki, S. (2011) Variscan prograde P-T evolution and contact metamorphism in metabasites from the Sowia Dolina, Karkonosze-Izera massif, SW Poland. Mineralogical Magazine, 75 (1) 185-212 doi:10.1180/minmag.2011.075.1.185	Journal (article/letter/editorial)
	Mg-hornblende and actinolite to tschermakite, and then to Mg-hornblende (or actinolite). Matrix amphiboles...Baie d’Audièrne region and Ile de Groix in Brittany, western France (Lucks et al., 2002; Schulz et al...al., 2001) or the Maures massif, SE France (Bellot et al., 2003). Thus, the systematic study of microstructures...Amphibole porphyroblasts from KRP 5.2 comprise actinolite- and Mg-hornblende cores (Si: 7.68 7.12 a.p.f...narrow rims of Si-rich magnesio-hornblende or actinolite (Si4+: 7.26 7.79 a.p.f.u.; proﬁle C, Figs 3c
	*HALFERDAHL, L. B. (1961) Chloritoid: Its Composition, X-ray and Optical Properties, Stability, and Occurrence. Journal of Petrology, 2 (1) 49-135 doi:10.1093/petrology/2.1.49*	Journal (article/letter/editorial)
	Rhode Island, U.S.A. Venasque, Pyrenees Mts., France St. Marcel, Piedmont, Italy Prost, 1883-4 Igelstrom...analyses of ottrelite from the Ardennes of Belgium and France (52-56, Table 6) showed varying and lesser amounts...1-44 007 0-24 404 1000 21. Venasque, Pyrenees, France. Manasse (1911, p. 41). This analysis and specific...quartz, and sericite. 34. Monte Fenouillet, Var, France. Manasse (1911). This analysis and specific gravity...The analysed chloritoid 61. Venasque, Pyrenees, France. Damour (1879). The analysed chloritoid was too
	REYNARD, B., BALLÈVRE, M. (1988) Coexisting amphiboles in an eclogite from the Western Alps: new constraints on the miscibility gap between sodic and calcic amphiboles. Journal of Metamorphic Geology, 6 (3) 333-350 doi:10.1111/j.1525-1314.1988.tb00424.x	Journal (article/letter/editorial)
	Socles, Universitt de Rennes 1, 35042 Rennes Cedex, France Abstract. Crystal-chemical relationships between...inclusions in garnet cores and made of glaucophane and actinolite (stage A). 2. Synkinematic eclogite assemblages...composed of garnet omphacite + glaucophane '. actinolite t white mica clinozoisite quartz + rutile (stage...overgrowths of barroisitic amphibole on glaucophane and actinolite (stage C). P-T conditions of the eclogitic metamorphism...at around 50&550"C, 16 kbar. Glaucophane and actinolite coexist as discrete grains in stage A and B assemblages

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Actinolite from Groix, Lorient, Morbihan, Brittany, France

Actinolite from
Groix, Lorient, Morbihan, Brittany, France