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![Diagram for discriminating menzerite-(Y) from andradite and morimotoite: solid blue lines are consistent with the dominant-valency rule, whereas dashed red lines are consistent with the dominant-end-member approach (cf. with fig. 10 of Grew et al., 2013).]()
![Garnet compositions from Loch Borralan rocks. (a) The ternary andradite–morimotoite+schorlomite-Al–grossular system, with data from Kaiserstuhl (Germany), Tamazeght (Morocco), and Sung Valley (India) for comparison (Melluso et al. 2010, Wang et al. 2016, Braunger et al. 2018). (b) The ternary system andradite–morimotoite–schorlomite-Al with data from Kaiserstuhl (Germany), Tamazeght (Morocco), and Sung Valley (India) for comparison (Melluso et al. 2010, Wang et al. 2016, Braunger et al. 2018). Co-variation of (c) Ti and Si apfu and (d) Mg and Ti apfu.]()
![Composition of the PLPAC garnets. (a) Relative proportion of the morimotoite, grossular + andradite, and schorlomite components. (b) Relative proportions of titanian garnets (morimotoite + schorlomite), grossular, and andradite components. (c) TiO2versus Fe2O3 diagram showing fields for schorlomite, melanite, and Ti-rich andradite (limits after Deer et al. 1982, Dingwell & Brearley 1985). Garnet compositions fall in the melanite and Ti-rich andradite fields. (d) Fe3+versus AlT. (e, f) Ti versus Si and Ti-Fe2+ covariations. Symbols as in Figure 3.]()
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![Diagram for discriminating the species in the schorlomite−andradite−morimotoite system: solid blue lines are consistent with the dominant-valency rule, whereas dashed red lines are consistent with the dominant-end-member approach (cf. with fig. 7 of Grew et al., 2013).]()
![First thumbnail for: Rodingites from the Xigaze ophiolite, southern Tib...]()
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![First thumbnail for: Crystal chemistry and light elements analysis of T...]()
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![First thumbnail for: A crystal chemical insight into sector zoning of a...]()
![Second thumbnail for: A crystal chemical insight into sector zoning of a...]()
![Third thumbnail for: A crystal chemical insight into sector zoning of a...]()
![First thumbnail for: Crystal chemistry of kimzeyite from Anguillara, Mt...]()
![Second thumbnail for: Crystal chemistry of kimzeyite from Anguillara, Mt...]()
![Plot of the Y-site contents of 40 natural garnets with TiO2 > 12 wt% based on formulas normalized to 8 cations and 12 O anions (excluding H); BaO and ZnO not included. Y-site contents were calculated from the relative proportions of (1) Ti+Zr (=R3+ at Z), (2) remaining Ti+Zr as R4+R2+, and (3) R3+, which correspond to schorlomite, morimotoite and andradite, respectively. Sources of data: Zedlitz (1935); Lehijärvi (1960); Gnevushev and Fedorova (1964); Howie and Woolley (1968); Dowty (1971); von Eckermann (1974); Amthauer et al. (1977); Huggins et al. (1977); Koritnig et al. (1978); Platt and Mitchell (1979); Flohr and Ross (1989); Lupini et al. (1992); Henmi et al. (1995); Labotka (1995); Locock et al. (1995); Chakhmouradian and McCammon (2005); Marks et al. (2008); Melluso et al. (2010); Saha et al. (2010). Circles for Mg > Fe2+ (total for analysis) have been added only for compositions plotting in the morimotoite field. The square enclosing a triangle indicates the schorlomite in which ZAl > ZFe3+ and 0.55 Zr pfu reported by Koritnig et al. (1978); it is a possible new species, the Al-dominant analog of schorlomite. Compositions are plotted under the assumption that Al preferentially is incorporated at the Z site (except from Fuka, see text).]()
![First thumbnail for: Ti-RICH ANDRADITES: CHEMISTRY, STRUCTURE, MULTI-PH...]()
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![First thumbnail for: On the application of the IMA−CNMNC dominant-valen...]()
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![Analyses of garnet from Wiluy plotted on the classification diagram ugrandite (and related end-members)–schorlomite–kimzeyite (A) and on the diagrams Sc vs. Ti + Zr + Hf (B) and Sc vs. Si (C); apfu = atom per formula unit. 1 = trend of composition change of relict zones, 2 = trend of composition change of late, often two-phase, zones. For description of symbols see Table 1. Mor-Zr = hypothetical end-member zirconium morimotoite Ca3Zr(Mg, Fe2+)Si3O12.]()
![First thumbnail for: Nomenclature of the garnet supergroup]()
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![First thumbnail for: A natural scandian garnet]()
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![Fig. 8.]()
O12 onto the plane defined by the components {Ca3}[Ti4+R2+](Si34+)O12, {Ca3}[R23+](Si34+)O12, and {(REE)2Ca}[R22+](Si34+)O12 (cf. Fig. 7a, Grew et al. 2010). R2+ = Fe in morimotoite, Mg in menzerite-(Y); R3+ = Fe in andradite. Numbers refer to grains used for the crystal-structure refinement (SREF), optical measurements, and menzerite-(Y) sensu stricto (Mzr), including grain no. 5 used as the holotype to characterize the mineral. The points for SREF and Optic are superimposed. Open diamonds indicate the other nine grains analyzed (data from Grew et al. 2010).]()
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Journal Article
Morimotoite, a new titanian garnet? Available to Purchase
Journal: Mineralogical Magazine
Published: 01 October 1997
Mineralogical Magazine (1997) 61 (5): 728–730.
Journal Article
Morimotoite, Ca 3 TiFe (super 2+) Si 3 O 12 , a new titanian garnet from Fuka, Okayama Prefecture, Japan; discussion Free
Journal: Mineralogical Magazine
Published: 01 October 1996
Mineralogical Magazine (1996) 60 (5): 842–845.
Journal Article
Morimotoite, Ca 3 TiFe (super 2+) Si 3 O 12 , a new titanian garnet from Fuka, Okayama Prefecture, Japan Free
Journal: Mineralogical Magazine
Published: 01 March 1995
Mineralogical Magazine (1995) 59 (1): 115–120.
Image
Diagram for discriminating menzerite-(Y) from andradite and morimotoite: so... Available to Purchase
in On the application of the IMA−CNMNC dominant-valency rule to complex mineral compositions
> Mineralogical Magazine
Published: 23 August 2019
Fig. 5. Diagram for discriminating menzerite-(Y) from andradite and morimotoite: solid blue lines are consistent with the dominant-valency rule, whereas dashed red lines are consistent with the dominant-end-member approach (cf. with fig. 10 of Grew et al. , 2013 ).
Image
Garnet compositions from Loch Borralan rocks. (a) The ternary andradite–mor... Available to Purchase
in Pseudoleucite syenites at Loch Borralan, Scotland: Petrology and a genetic model
> The Canadian Mineralogist
Published: 24 November 2020
Fig. 6. Garnet compositions from Loch Borralan rocks. (a) The ternary andradite–morimotoite+schorlomite-Al–grossular system, with data from Kaiserstuhl (Germany), Tamazeght (Morocco), and Sung Valley (India) for comparison ( Melluso et al . 2010 , Wang et al . 2016 , Braunger et al . 2018
Image
Composition of the PLPAC garnets. (a) Relative proportion of the morimotoit... Available to Purchase
in Mineral Chemistry and Petrogenesis of the Puesto La PeÑa Undersaturated Alkaline Potassic Complex, Mendoza, Argentina
> The Canadian Mineralogist
Published: 01 July 2015
Fig. 7. Composition of the PLPAC garnets. (a) Relative proportion of the morimotoite, grossular + andradite, and schorlomite components. (b) Relative proportions of titanian garnets (morimotoite + schorlomite), grossular, and andradite components. (c) TiO 2 versus Fe 2 O 3 diagram showing
Image
Representative compositions of garnet in Type 3 nephelinite lavas FeO a... Open Access
in Petrology and Sr–Nd isotope geochemistry of Mosonik: a polygenetic phonolitic nephelinite–phonolite volcano located in the North Tanzanian Divergence of the East African Rift
> Geological Magazine
Published: 15 August 2022
); Slo-Al = schlorlomite-Al (Ca 3 Ti 2 (SiAl 2 )O 12 ); Mmt = morimotoite (Ca 3 (TiFe 2+ )Si 3 O 12 ); Mmt-Mg = morimotoite-Mg (Ca 3 (TiMg)Si 3 O 12 ); Adr = andradite (Ca 3 Fe 3+ 2 Si 3 O 12 ); Skg = skiagite Fe 2+ 3 Fe 3+ 2 Si 3 O 12 ; Khh = khoharite Mg 3 Fe 3+ 2 Si 3 O 12
Image
Diagram for discriminating the species in the schorlomite−andradite−morimot... Available to Purchase
in On the application of the IMA−CNMNC dominant-valency rule to complex mineral compositions
> Mineralogical Magazine
Published: 23 August 2019
Fig. 4. Diagram for discriminating the species in the schorlomite−andradite−morimotoite system: solid blue lines are consistent with the dominant-valency rule, whereas dashed red lines are consistent with the dominant-end-member approach (cf. with fig. 7 of Grew et al. , 2013 ).
Journal Article
Rodingites from the Xigaze ophiolite, southern Tibet – new insights into the processes of rodingitization Available to Purchase
Journal: European Journal of Mineralogy
Publisher: GeoScienceWorld Journals
Published: 28 February 2017
European Journal of Mineralogy (2017) 29 (5): 821–837.
... be divided into two groups. Group I rodingite, where prehnite is absent, consists of the subgroups clinozoisite rodingite, garnet–diopside rodingite and garnet–vesuvianite rodingite. The grossular-rich (hydro) garnet may contain up to 13.7 wt% TiO 2 , essentially as morimotoite component (23 mol%). In group...
FIGURES
Includes: Supplemental Content
Journal Article
Crystal chemistry and light elements analysis of Ti-rich garnets Available to Purchase
Journal: American Mineralogist
Publisher: Mineralogical Society of America
Published: 01 February 2016
American Mineralogist (2016) 101 (2): 371–384.
... contents and extent of substitutions at tetrahedral site. The main substitution mechanisms affecting the studied garnets are: Y R 4+ + Z R 3+ ↔ Z Si + Y R 3+ (schorlomite substitution); Y R 2+ + Z R 4+ ↔ 2 Y R 3+ (morimotoite substitution); Y R 3+ ↔ Y Fe 3+ (andradite substitution); in the above...
FIGURES
Journal Article
A crystal chemical insight into sector zoning of a titanian andradite (‘melanite’) crystal Available to Purchase
Journal: European Journal of Mineralogy
Publisher: GeoScienceWorld Journals
Published: 01 July 2002
European Journal of Mineralogy (2002) 14 (4): 785–794.
... the melanite structure, i.e. M 2+ (Y) + M 4+ (Y) ⟷ 2M 3+ (Y), morimotoite substitution, with M 2+ = Mg, Mn; M 3+ = Al, Fe; M 4+ = Ti, Zr, and Ti 4+ (Y) + Fe 3+ (Z) ⟷ Si 4+ (Z) + Al 3+ (Y), schorlomite substitution. The former occurs in both growth sectors, {121} and {110}, the latter only in the {121} sector...
FIGURES
Journal Article
Crystal chemistry of kimzeyite from Anguillara, Mts. Sabatini, Italy Available to Purchase
Journal: European Journal of Mineralogy
Publisher: GeoScienceWorld Journals
Published: 01 July 2001
European Journal of Mineralogy (2001) 13 (4): 749–759.
...) [schorlomite substitution]; 2) Zr 4+ (Y) + M 3+ (Z) ↔ Si 4+ (Z) + M 3+ (Y) [kimzeyite substitution]; 3) Mg 2+ (Y) + Zr 4+ (Y) ↔ 2M 3+ (Y) [morimotoite-like substitution], where M 3+ = (Al, Fe). In addition, following the bond strength theory indications, another mechanism which possibly involves the X and Y...
FIGURES
Image
Plot of the Y -site contents of 40 natural garnets with TiO 2 > 12 wt%... Available to Purchase
Published: 01 April 2013
+Zr as R 4+ R 2+ , and (3) R 3+ , which correspond to schorlomite, morimotoite and andradite, respectively. Sources of data: Zedlitz (1935) ; Lehijärvi (1960) ; Gnevushev and Fedorova (1964) ; Howie and Woolley (1968) ; Dowty (1971) ; von Eckermann (1974) ; Amthauer et al. (1977
Journal Article
Ti-RICH ANDRADITES: CHEMISTRY, STRUCTURE, MULTI-PHASES, OPTICAL ANISOTROPY, AND OSCILLATORY ZONING Available to Purchase
Journal: The Canadian Mineralogist
Publisher: Mineralogical Association of Canada
Published: 23 June 2015
The Canadian Mineralogist (2015) 53 (1): 133–158.
... This coupled substitution does not involve schorlomite, Ca 3 Ti 2 4+ [Fe 2 3+ Si]O 12 , or morimotoite, Ca 3 (Ti 4+ Fe 2+ )Si 3 O 12 , although the formula above may be written as one-half of both of these components as follows: Ca 3 ( Ti 4 + 1.5 Fe 2 + 0.5 ) [ Fe...
FIGURES
Journal Article
On the application of the IMA−CNMNC dominant-valency rule to complex mineral compositions Available to Purchase
Journal: Mineralogical Magazine
Published: 23 August 2019
Mineralogical Magazine (2019) 83 (5): 627–632.
...Fig. 5. Diagram for discriminating menzerite-(Y) from andradite and morimotoite: solid blue lines are consistent with the dominant-valency rule, whereas dashed red lines are consistent with the dominant-end-member approach (cf. with fig. 10 of Grew et al. , 2013 ). ...
FIGURES
Image
Analyses of garnet from Wiluy plotted on the classification diagram ugrandi... Available to Purchase
Published: 01 October 2005
= trend of composition change of late, often two-phase, zones. For description of symbols see Table 1 . Mor-Zr = hypothetical end-member zirconium morimotoite Ca 3 Zr(Mg, Fe 2+ )Si 3 O 12 .
Journal Article
Nomenclature of the garnet supergroup Available to Purchase
Journal: American Mineralogist
Publisher: Mineralogical Society of America
Published: 01 April 2013
American Mineralogist (2013) 98 (4): 785–811.
...+Zr as R 4+ R 2+ , and (3) R 3+ , which correspond to schorlomite, morimotoite and andradite, respectively. Sources of data: Zedlitz (1935) ; Lehijärvi (1960) ; Gnevushev and Fedorova (1964) ; Howie and Woolley (1968) ; Dowty (1971) ; von Eckermann (1974) ; Amthauer et al. (1977...
FIGURES
Journal Article
A natural scandian garnet Available to Purchase
Journal: American Mineralogist
Publisher: Mineralogical Society of America
Published: 01 October 2005
American Mineralogist (2005) 90 (10): 1688–1692.
... = trend of composition change of late, often two-phase, zones. For description of symbols see Table 1 . Mor-Zr = hypothetical end-member zirconium morimotoite Ca 3 Zr(Mg, Fe 2+ )Si 3 O 12 . ...
FIGURES
Image
The cations at the Y site fall on the straight line BD and represents a sol... Available to Purchase
in Ti-RICH ANDRADITES: CHEMISTRY, STRUCTURE, MULTI-PHASES, OPTICAL ANISOTROPY, AND OSCILLATORY ZONING
> The Canadian Mineralogist
Published: 23 June 2015
schorlomite (C) and morimotoite (E). Composition F, Ca 3 (Ti 4+ 1.5 Fe 3+ 0.5 )[Fe 3+ 1.5 Si 1.5 ]O 12 , is similar to the composition, W = Ca 3 (Ti 4+ 1.42 Fe 3+ 0.58 )[Fe 3+ 1.42 Si 1.58 ]O 12 , made by Weber et al. (1975) . Data from other studies, with symbols the same as in Figure 7 , fall
Image
O12 onto the plane defined by the components {Ca3}[Ti4+R2+](Si34+)O12, {Ca3}[R23+](Si34+)O12, and {(REE)2Ca}[R22+](Si34+)O12 (cf. Fig. 7a, Grew et al. 2010). R2+ = Fe in morimotoite, Mg in menzerite-(Y); R3+ = Fe in andradite. Numbers refer to grains used for the crystal-structure refinement (SREF), optical measurements, and menzerite-(Y) sensu stricto (Mzr), including grain no. 5 used as the holotype to characterize the mineral. The points for SREF and Optic are superimposed. Open diamonds indicate the other nine grains analyzed (data from Grew et al. 2010).](https://gsw.silverchair-cdn.com/gsw/Content_public/Journal/ammin/98/4/10.2138_am.2013.4201/5/s_0785f10.jpeg?Expires=2147483647&Signature=4vDCVHImYLdwmQKnoxn6k1h-0Pd~K0atbpoAch1UjI5QK8bugViM-elKAvNwgi2t5tB8aI7ynMHAwJTblk7A7AN2rnucgpKuouMxRRiaek1b~YgtnU2wxo1JA4LIC0N1G2mf4eqfcOxogNUvQqK9VUllDoH6yS0101aXm6Vd0aA76XC5q08XXVmTzhVHfRvE6fvpzxxt89RSK5-5wrqxbVpCupHXSUwQOjqET9ZHnJ~mWFnghv3G4oJRYo6Y5ZYELe6Ub9R7z2XZbPu7CdU-Pw1g48SEcPvp641Zo9uDDgtueVLcilaINuR33Y0Xci~VuJu8Kw-pVzHUWj8tW3RCgw__&Key-Pair-Id=APKAIE5G5CRDK6RD3PGA)
Plot of menzerite-(Y) compositions at the Y site projected from {Y 3 }[ R... Available to Purchase
Published: 01 April 2013
et al. 2010 ). R 2+ = Fe in morimotoite, Mg in menzerite-(Y); R 3+ = Fe in andradite. Numbers refer to grains used for the crystal-structure refinement (SREF), optical measurements, and menzerite-(Y) sensu stricto (Mzr), including grain no. 5 used as the holotype to characterize the mineral
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