1-20 OF 55 RESULTS FOR

chloritoid

Results shown limited to content with bounding coordinates.
Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
Close Modal
Sort by
Journal Article
Published: 01 March 2013
Journal of the Geological Society (2013) 170 (2): 263–280.
..., chloritoid and some chlorite). Both the Crozon peninsula and inland datasets show a hockey-stick shaped pattern on a plot of the shape parameter T versus the corrected degree of anisotropy P J , although the whole pattern is shifted to higher P J values for the inland dataset. High-field AMS indicates...
FIGURES | View All (13)
Journal Article
Published: 01 January 2013
Russ. Geol. Geophys. (2013) 54 (1): 55–63.
... diatom complexes marking the Holocene–Late Pleistocene boundary. A high content of chloritoid (up to 14.6%) has been found among the heavy minerals of the sand fraction of Late Pleistocene clays. The concentration of chloritoid in Holocene mud is no higher than 1.2%. The source of chloritoid...
FIGURES | View All (4)
Journal Article
Published: 17 May 2012
Geological Magazine (2012) 149 (6): 1077–1088.
.... The dominant metamorphic assemblage of the metapelites is garnet, staurolite, chloritoid, chlorite, muscovite and quartz, which grew mainly syntectonically during the later contact metamorphic event. Peak metamorphic conditions of this event took place at 580 °C and ~3–4 kbar, indicating that this event...
FIGURES | View All (8)
Journal Article
Published: 01 October 2010
European Journal of Mineralogy (2010) 22 (5): 721–732.
...Gert Hoschek; Juergen Konzett; Richard Tessadri Abstract In a quartzitic garnet-kyanite-chloritoid micaschist garnet is present as compact, partly euhedral grains and as web-like types with numerous inclusions of quartz. Compact types overgrown by web garnets or alternating layers of both types...
FIGURES | View All (9)
Series: GSA Special Papers
Published: 01 January 2006
DOI: 10.1130/2006.2403(07)
... Matrix chloritoid is relatively Fe-rich (from 0.78 to 0.80 mol%) and homogeneous. Staurolite is strongly zoned, with a Mg-rich core ( X Mg = 0.20) and an Fe-rich rim ( X Mg = 0.12). Both staurolite and chloritoid included adjacent to fractures in Grt1 are probably the products of late...
Journal Article
Published: 01 July 2005
European Journal of Mineralogy (2005) 17 (4): 587–598.
... terrane of the Dora-Maira massif, western Alps, the most magnesian-rich chloritoid reported so far is a magnesiochloritoid (Mg-Cld) close to endmember composition (Mg/(Mg + Fe) = 0.97). It occurs along with garnet, talc (Tlc), kyanite (Ky), and chlorite close to clinochlore (Chl) composition ( Simon et...
FIGURES | View All (7)
Journal Article
Published: 01 February 2005
American Mineralogist (2005) 90 (2-3): 347–358.
... and chloritoid over a wide range of pressure ( P ), temperature ( T ), and rock composition. The combination of these data with the three-site mixing model and thermodynamic properties of daphnite proposed by Vidal et al. (2001) led us to reappraise the evolution of the Margules parameter W G AlFe with pressure...
FIGURES | View All (11)
Journal Article
Published: 01 January 2005
European Journal of Mineralogy (2005) 17 (1): 81–91.
... by paragonite-bearing assemblages. Examination of bulk-rock chemistries indicates that most of the mineralogical changes are the result of the increasing metamorphic grade, with the exception of chloritoid; its growth does appear to be partly controlled by the rocks chemistry (it is Al 2 O 3 dependent...
FIGURES | View All (5)
Journal Article
Published: 01 November 2003
European Journal of Mineralogy (2003) 15 (6): 977–989.
...Piercarlo GABRIELE; Michel BALLÈVRE; Etienne JAILLARD; Jean HERNANDEZ Abstract The Raspas Complex (Ecuador) contains one of the few eclogitic bodies in the northern Andes. It consists of metaperidotites, eclogites, and metapelites. The latter display three assemblages: (i) garnet + chloritoid...
FIGURES | View All (8)
Journal Article
Published: 01 September 2003
European Journal of Mineralogy (2003) 15 (5): 815–830.
.... To experimentally assess this process an oceanic tholeiite (MORB) has been enriched (10–100 ppm) in 25 trace elements and crystallized at 3.0 GPa, 650 and 700°C for 2 weeks, with 30–50wt.% added water. At 650°C the fluid coexists with omphacite, lawsonite, chloritoid, coesite and accessory phengite, rutile, Ti...
FIGURES | View All (10)
Journal Article
Published: 01 May 2003
European Journal of Mineralogy (2003) 15 (3): 575–588.
...Marcello FRANCESCHELLI; Mariano PUXEDDU; Marco GATTIGLIO Abstract Chloritoid schist layers frequently occur as the uppermost part of the Rhaetian Brecce di Seravezza Formation, interpreted as rockfall talus metabreccias intercalated between Norian and Liassic marbles, in the Alpi Apuane Tuscany...
FIGURES | View All (7)
Journal Article
Published: 01 May 2002
American Mineralogist (2002) 87 (5-6): 609–622.
...Monika Koch-Müller; Anne M. Hofmeister; Yingwei Fei; Zhenxian Liu Abstract Using IR radiation from a synchrotron source, high-quality absorbance spectra were obtained from polycrystalline powder of chloritoid (cld) from ambient conditions up to pressures of 10 GPa over 50 to 4000 cm −1...
FIGURES | View All (13)
Journal Article
Journal: GSA Bulletin
Published: 01 February 2002
GSA Bulletin (2002) 114 (2): 207–225.
... and chloritoid occurrences). Toward the west, in the Petit St. Bernard and Versoyen units, the metamorphic conditions reached the eclogite facies (15– 16 kbar, 500 °C). The shortening direction associated with the high-pressure metamorphic event was oriented northwest- southeast all over the Valaisan domain...
FIGURES | View All (13)
Journal Article
Published: 01 January 2002
Reviews in Mineralogy and Geochemistry (2002) 46 (1): 449–462.
...-biotite-garnet-chloritoid. The basis vectors are Equation (7), weighted two, Equation (3), unweighted, and Equation (18) of Table 1 , weighting irrelevant. The vertex assemblage at A is 6 Dim, 2 Chl, 4 tk, 4 Qtz. The assemblage at B is 6 Bio, 6 tk, 18 Qtz, 8 H 2 O lost; that at C is 6 Dim, 3 tk, 3 Gar, 8...
FIGURES | View All (6)
Journal Article
Published: 01 November 2001
European Journal of Mineralogy (2001) 13 (6): 1127–1138.
...Claudio MAZZOLI; Raffaele SASS; Alain BARONNET Abstract A peculiar textural association of muscovite, paragonite and chloritoid occurs in a micaschist bearing muscovite and garnet porphyroblasts, from the Greiner Unit (Eastern Alps, Italy). Three different tectonometamorphic stages can...
FIGURES | View All (9)
Journal Article
Published: 01 September 2001
European Journal of Mineralogy (2001) 13 (5): 901–902.
... Si 7.3 Al 0.7 O 22 (OH) 2 to □Na 0.2 Ca 1.8 L 4.5 M 0.5 Si 7.8 Al 0.2 O 22 (OH) 2 . Chloritoids in Grt-Phg ± (Gln-Chl) bearing metasediments are Fe-rich (0.06 < XMg < 0.09) with Fe 3+ < 0.15 a.p.f.u. In Syros, chloritoids are associated with Mg-rich chlorites (0.25 < XMg < 0.32...
FIGURES | View All (10)
Journal Article
Published: 01 March 2000
European Journal of Mineralogy (2000) 12 (2): 293–314.
...Monika KOCH-MÜLLER; Irmgard ABS-WURMBACH; Klaus LANGER; Cliff SHAW; Richard WIRTH; Matthias GOTTSCHALK Abstract Fe-Mg bearing chloritoids were synthesized at 18–35 kbar and 590–720°C in a piston cylinder apparatus under the f O2 defined by the Fe/FeO buffer (IW). We investigated the synthetic...
FIGURES | View All (12)
Journal Article
Published: 01 February 1999
Mineralogical Magazine (1999) 63 (1): 105–110.
...M. Franceschelli; I. Memmi Chloritoid with significant Mg-Fe zoning occurs as lath-shaped porphyroblasts and as clusters of subradiating crystals in the Triassic Verrucano metapsammite (quartz+muscovite+chlorite+chloritoid+ or -kyanite) of the Massa Unit, Alpi Apuane. Two main types of chloritoid...
Journal Article
Published: 01 February 1998
The Canadian Mineralogist (1998) 36 (1): 137–145.
...Katharina Lodders; Goestar Klingelhoefer; Daniel T. Kremser Abstract Almost pure Fe end-member chloritoid was identified as the major included phase in large cubes of pyrite from Navajun, Logrono, Spain. The silicates in the pyrite matrix as well as isolated mineral separates were analyzed...
Journal Article
Published: 01 October 1995
European Journal of Mineralogy (1995) 7 (5): 1149–1167.