1-20 OF 27 RESULTS FOR

magnesiostaurolite

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 June 2015
European Journal of Mineralogy (2015) 27 (3): 377–392.
...Marian Janák; Pavel Uher; Erling Krogh Ravna; Kåre Kullerud; Mirijam Vrabec Abstract: Chromium-rich kyanite, magnesiostaurolite and corundum (ruby) were found in ultrahigh-pressure (UH P ) eclogites associated with garnet peridotite and serpentinite from Pohorje Mountains (Eastern Alps...
FIGURES | View All (7)
Journal Article
Published: 01 January 2003
European Journal of Mineralogy (2003) 15 (1): 167–176.
...Christian CHOPIN; Bruno GOFFE; Luciano UNGARETTI; Roberta OBERTI Abstract Magnesiostaurolite, ideally A □ 4 B Mg 4 C Al 16 D (Al 2 □ 2 ) T Si 8 O 40 X [(OH) 2 O 6 ], occurs together with talc, clinochlore and kyanite (or alone, armouring corundum) as inclusions in pyrope megablasts from the ultra...
FIGURES
Image
a–f. (a) CrAl −1  substitution in kyanite. (b) CrAl -1  substitution in cor...
Published: 01 June 2015
Fig. 6. a–f. (a) CrAl −1 substitution in kyanite. (b) CrAl -1 substitution in corundum. (c) CrAl -1 substitution in B , C and D structural site of magnesiostaurolite. (d) Fe 2+ Mg -1 substitution in magnesiostaurolite. (e) M 2+ Si(Al,Cr) -2 substitution in magnesiostaurolite, where M
Image
Polymineralic inclusion of <span class="search-highlight">magnesiostaurolite</span> (mst), interleaved clinochlor...
Published: 01 January 2003
Fig. 1. Polymineralic inclusion of magnesiostaurolite (mst), interleaved clinochlore (chl) and talc (tc), and kyanite (ky, partly pulled out) within a megablast of pyrope garnet (py). Photomicrograph, crossed nicols; sample 85DM66b, Val Gilba, Dora-Maira massif. The relevant assemblage
Image
Compositional variations in the staurolite group in terms of relative propo...
Published: 01 January 2003
Barrhorn. The subdivisions drawn are a practical distinction (as long as Li is not dominant) between staurolite proper, zincostaurolite and magnesiostaurolite on the basis of the dominant divalent cations — considered as essentially occupying the T2 site, regardless of their minor occupancies
Image
Pressure–temperature diagram showing the stability fields of pyrope, magnes...
Published: 01 August 2013
F igure 4 Pressure–temperature diagram showing the stability fields of pyrope, magnesiostaurolite, magnesiochloritoid, and Mg-sursassite (see Fockenberg 2008 ), as well as topaz-(OH) ( Wunder et al. 1993 ). The reaction curves K-feldspar + H 2 O = K-cymrite (for water activities of 0.1 and 1
Image
a–f. Back-scattered electron (BSE) images of Cr-rich eclogites from Pohorje...
Published: 01 June 2015
Fig. 5. a–f. Back-scattered electron (BSE) images of Cr-rich eclogites from Pohorje. (a,b) Type-1 eclogite. Kyanite (Ky) with medium-gray, Cr-rich core containing bright inclusions of chromite. (b) Close up of Cr-rich core of kyanite with magnesiostaurolite (St), chromite (Crm), garnet (Grt
Image
Photographs of Cr-rich eclogites from Pohorje and Tromsø Nappe. (a) Type-1 ...
Published: 01 June 2015
. (e, f) Type-2 eclogite from the Tromsø Nappe; note the contact of eclogite with garnet peridotite. Green spots are Cr-rich magnesiostaurolite, associated with Cr-rich kyanite, Cr-rich corundum and chromite. Garnet is pinkish, kyanite is blue, amphibole is pale green and zoisite is white.
Journal Article
Journal: Elements
Published: 01 August 2013
Elements (2013) 9 (4): 261–266.
...F igure 4 Pressure–temperature diagram showing the stability fields of pyrope, magnesiostaurolite, magnesiochloritoid, and Mg-sursassite (see Fockenberg 2008 ), as well as topaz-(OH) ( Wunder et al. 1993 ). The reaction curves K-feldspar + H 2 O = K-cymrite (for water activities of 0.1 and 1...
FIGURES | View All (7)
Journal Article
Published: 01 July 2019
European Journal of Mineralogy (2019) 31 (4): 661–663.
..., magnesiostaurolite, zincostaurolite, and enstatite + sapphirine. Many of these phases were newly discovered solid-solution members of known minerals, but completely new rock-forming minerals like bearthite and ellenbergerite were studied as well. Nevertheless, Christian Chopin was also intrigued by the structure...
FIGURES
Journal Article
Published: 01 October 2003
American Mineralogist (2003) 88 (10): 1626–1629.
...) Magnesiostaurolite and zincostaurolite: mineral description with a petrogenetic and crystal-chemical update. Eur. J. Mineral., 15, 167–176. Electron and ion microprobe analyses gave SiO 2 30.66, Al 2 O 3 57.45, TiO 2 0.18, FeO 0.72, MgO 7.77, ZnO 0.10, Li 2 O 0.90, H 2 O (calc.) 2.30, sum 100.08 wt...
Journal Article
Published: 01 January 2010
American Mineralogist (2010) 95 (1): 185–187.
... Rd Mkt magnesiokatophorite Rd Mrbk magnesioriebeckite Rd Msdg magnesiosadanagite Rd Mst magnesiostaurolite A Mtm magnesiotaramite Rn Mws magnesiowustite not listed Mgs magnesite A Mag magnetite G Maj majorite A Mlc malachite G Mng manganosite G...
Journal Article
Published: 23 October 2018
The Canadian Mineralogist (2018) 56 (4): 603–624.
... of the Czech Geological Society 51 , 259 – 270 . Chopin, C., Goffe, B., Ungaretti, L., & Oberti, R. (2003) Magnesiostaurolite...
FIGURES | View All (10)
Journal Article
Published: 01 July 2019
European Journal of Mineralogy (2019) 31 (4): 755–774.
... with their formulae and date of discovery, which were taken from the RRUFF website, http://rruff.info/ima/ ) on September 25, 2018. The CNMNC list includes magnesiostaurolite and hectorite as Li minerals. Although Li is relatively abundant in both minerals, in neither mineral is Li the dominant constituent...
FIGURES | View All (9)
Journal Article
Published: 01 June 2004
The Canadian Mineralogist (2004) 42 (3): 921–945.
....%. Empirical formula: (□ 3.77 Mg 0.10 Fe 0.13 ) ∑4.00 (Li 0.51 Zn 2.45 Fe 0.20 □ 0.84 ) ∑4.00 (Al 15.98 Ti 0.02 ) ∑16.00 (Al 1.94 Mg 0.09 □ 1.97 ) ∑4.00 Si 8.00 O 39.98 [(OH) 3.67 O 4.33 ] ∑8.00 . Relationship to other species : It is the Zn-dominant analogue of staurolite and magnesiostaurolite...
Journal Article
Published: 01 June 2016
European Journal of Mineralogy (2016) 28 (3): 631–639.
... continental subduction . J. Metamorphic Geol. , 33 , 495 – 512 doi: 10.1111/jmg.12130 . Janák M. Uher P. Ravna E.J.K. Kullerud K. Vrabec M. ( 2015b ): Chromium-rich kyanite, magnesiostaurolite and corundum in ultrahigh-pressure eclogites (examples from Pohorje Mountains...
FIGURES | View All (6)
Journal Article
Published: 01 October 2008
European Journal of Mineralogy (2008) 20 (5): 791–809.
... are after Kretz (1983) : bea, bearthite; eb, ellenbergerite; mgdum, magnesiodumortierite; mgst, magnesiostaurolite; wag, wagnerite. The sequences of minerals chosen reflect their approximate relative amounts starting with the most significant ones. 1. Parigi/Case Ramello     a. Fine-grained...
FIGURES | View All (10)
Published: 01 January 2013
DOI: 10.1180/DHZ.9
EISBN: 9780903056434
... with the variations in chemical composition, staurolites show minor changes in their range of optical properties. The refractive indices of synthetic magnesiostaurolite are, however, substantially lower at α 1.703, γ 1.710, than the range α ~1.740,γ ~1.755 of the common ferroan staurolites. Staurolite crystals...
FIGURES | View All (4)
Journal Article
Published: 01 May 2009
American Mineralogist (2009) 94 (5-6): 737–745.
... Chopin, C., Goffé, B., Ungaretti, L., and Oberti, R. ( 2003 ) Magnesiostaurolite and zincostaurolite: Mineral description with a petrogenetic and crystal-chemical update. European Journal of Mineralogy , 15 , 167 –176. Comodi, P., Montagnoli, M., Zanazzi, P.F., and Boffa Ballaran, T. ( 2002...
FIGURES | View All (6)
Journal Article
Published: 01 October 2008
European Journal of Mineralogy (2008) 20 (5): 735–744.
... and magnesiostaurolite as prograde inclusions in pyrope megacrysts. The stability of pyrope was first studied experimentally by Boyd & England (1959) in the water-free system MgO–Al 2 O 3 –SiO 2 (MAS). Pyrope becomes stable at pressures exceeding 1.5 GPa, where it is formed from aluminous enstatite...
FIGURES | View All (6)