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grandite

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Journal Article
Published: 01 May 2008
American Mineralogist (2008) 93 (5-6): 886–892.
... 15.82 16.30 Experimental petrology thermodynamics fluid crystal growth metasomatism An important constituent of calc-silicate skarns and granulites is grandite garnet, a solid-solution dominated by andradite (Ca 3 Fe 2 Si 3 O 12 ) and grossular (Ca 3 Al 2 Si 3 O 12 ), with minor...
FIGURES | View All (4)
Journal Article
Published: 01 April 2002
Mineralogical Magazine (2002) 66 (2): 275–286.
...A. G. Shtukenberg; D. Yu. Popov; Yu. O. Punin Abstract The origin of anomalous birefringence in grossular-andradite (grandite) garnets is considered. Using the point-dipole model we have calculated the anomalous optical indicatrix for four crystals (three from the paper by Takéuchi et al. (1982...
FIGURES | View All (4)
Journal Article
Published: 01 June 2001
Mineralogical Magazine (2001) 65 (3): 445–459.
...A. G. Shtukenberg; Yu. O. Punin; O. V. Frank-Kamenetskaya; O. G. Kovalev; P. B. Sokolov Abstract The origin of anomalous birefringence of grossular–andradite (grandite) garnets from skarns in Mali and Russia was considered. The crystals had complex optical patterns which can be induced...
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Journal Article
Published: 01 December 1998
Mineralogical Magazine (1998) 62 (6): 857–868.
...T. I. Ivanova; A. G. Shtukenberg; Yu. O. Punin; O. V. Frank-Kamenetskaya; P. B. Sokolov Abstract The available data on compositional zoning in grossular-andradite (grandite) garnets occurring at different scales, mainly due to the variations of their Fe (super 3+) /Al ratios, and the hypotheses...
Journal Article
Published: 01 April 1998
European Journal of Mineralogy (1998) 10 (2): 251–259.
Journal Article
Published: 01 April 1992
American Mineralogist (1992) 77 (3-4): 399–406.
...Dana T. Griffin; Dorian M. Hatch; William Revell Phillips; Seyfi Kulaksiz Abstract The crystal chemistry of a natural, birefringent garnet of composition (Fe 1.88 Ca 0.75 Mg 0.24 Mn 0.10 ) Σ = 2.97 (Al 1.96 Fe 0.03 Ti 0.01 ) Σ = 2.00 Si 3.01 O 12 (approximately pyralspite 75 -grandite 25...
Journal Article
Published: 01 February 1989
American Mineralogist (1989) 74 (1-2): 151–159.
...Dorian M. Hatch; Dana T. Griffen Abstract Birefringence among the grandite garnets (grossular-andradite solid-solution series) is common and has been found previously to result, at least in some cases, from ordering of A1 and Fe 3+ on the octahedral (a) sites of space group Ia 3 d , lowering...
Journal Article
Published: 01 October 1986
American Mineralogist (1986) 71 (9-10): 1210–1213.
...Hisako Hirai; Hiromoto Nakazawa Abstract Low symmetry of a grandite garnet, An 50 Gr 45 Sp 5 , from Mul-Kum mine, South Korea, showing an “optical anomaly,” was observed by conventional precession methods. A series of forbidden reflections in cubic symmetry ( Ia3d ) was clearly observed...
Journal Article
Published: 01 February 1986
American Mineralogist (1986) 71 (1-2): 123–126.
Journal Article
Published: 01 October 1984
American Mineralogist (1984) 69 (9-10): 896–901.
...Mizuhiko Akizuki; Hiroto Nakai; Teruo Suzuki Abstract Iridescence in grandite garnet from Kamihogi, Yamaguchi Prefecture, Japan, results from two chemically distinct kinds of growth lamellae, which repeat alternately parallel to (110) with a periodicity of about 2 μ m. Thin sections of grandite...
Journal Article
Published: 01 December 1982
American Mineralogist (1982) 67 (11-12): 1242–1247.
Image
Photomicrographs of skarn textures (all in plane-polarized transmitted ligh...
Published: 01 December 2010
Fig. 4 Photomicrographs of skarn textures (all in plane-polarized transmitted light; scale bar = 0.5 mm). (a) Massive, yellow early andradite (I) (top right) with an overgrowth of grandite, in a matrix of zoned grandite crystals. Magnetite, sphalerite, calcite, and quartz occur interstitially
Image
Isocon diagrams, calculated using average compositions of unaltered limesto...
Published: 01 December 2010
Fig. 8 Isocon diagrams, calculated using average compositions of unaltered limestone, and grandite and andradite skarn. (a) Grandite skarn relative to limestone. (b) Andradite skarn relative to grandite skarn. The solid line is the constant volume isocon and the dashed line is the constant Zr
Image
Average chondrite-normalized REE patterns of andradite (Adr) and <span class="search-highlight">grandite</span> (...
Published: 30 January 2018
Fig. 4. Average chondrite-normalized REE patterns of andradite (Adr) and grandite (Grd) garnets from the Kasva skarn. The patterns were obtained by calculating the mean values of each set of analyses reported in Table 2 . Normalization values are after McDonough & Sun (1995) . The errors
Image
The pyralspite-<span class="search-highlight">grandite</span> system as first defined by  Winchell and Winchell (...
Published: 01 August 2016
Figure 6 The pyralspite-grandite system as first defined by Winchell and Winchell (1927) , using the data of Boeke (1914) . Garnets represented by open circles and falling between the two garnet groups in this diagram were discussed by Boeke. Several of them, but not all, were considered
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Stormont garnet compositions. Six individual <span class="search-highlight">grandite</span> crystals were analyze...
Published: 01 June 2012
Fig. 4 Stormont garnet compositions. Six individual grandite crystals were analyzed. On average, they are granditic with grossular-rich cores and more andradite rich rims, with considerable internal variation. Abbreviations: Al = almandine, Pp = pyrope, Sp = spessartine.
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Photomicrographs of primary fluid inclusions (arrows) in (a) <span class="search-highlight">grandite</span>; (b) ...
Published: 01 December 2010
Fig. 10 Photomicrographs of primary fluid inclusions (arrows) in (a) grandite; (b) sphalerite (I); and (c) pyroxene.
Image
Partitioning of Al and Fe 3+  between the grossular-andradite (<span class="search-highlight">grandite</span>) so...
Published: 02 January 2004
Figure 8. Partitioning of Al and Fe 3+ between the grossular-andradite (grandite) solid solution and the clinozoisite-epidote solid solution at f O 2 fixed by the HM buffer. Note that X and corresponds to Fe 3+ /(Fe 3+ +Al total ) in garnet solid solution but X epi corresponds to Fe 3
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Transition from optically anisotropic to isotropic <span class="search-highlight">grandite</span> in the growth a...
Published: 01 January 2004
F igure 5. Transition from optically anisotropic to isotropic grandite in the growth and heating experiments of Hariya and Kimura (1978) and the experiments presented here. Despite the different solid solution compositions, the transition temperature is similar.
Image
Stereographic projection of the optical properties of <span class="search-highlight">grandite</span> garnets. An ...
Published: 01 April 2002
F ig . 1. Stereographic projection of the optical properties of grandite garnets. An average observed optical indicatrix is shown by stars. The open circles correspond to a calculated indicatrix for orthorhombic garnets in the case of a ‘simplified’ orthorhombic structure and calculations