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taramite

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Journal Article
Published: 01 February 1978
The Canadian Mineralogist (1978) 16 (1): 53–62.
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Taramite compositions plotted on Na-Ca amphibole classification diagram of Leake et al. (1997).
Published: 01 January 2009
F igure 5. Taramite compositions plotted on Na-Ca amphibole classification diagram of Leake et al. (1997) .
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Photomicrographs showing the occurrence of jadeite, omphacite, diopside/hedenbergite, taramite, K-feldspar, and albite. (a) Albite porphyroblast and K-feldspar under cross-polarized light. (b) Colorless jadeite growing over green omphacite, observed at the periphery of an albite porphyroblast under plane-polarized light. (c) Backscattered electron (BSE) image of overgrowth relationship of a diopside/hedenbergite core, omphacite mantle, and jadeite rim. (d) BSE image of taramite in contact with jadeite. (e) BSE image of an omphacite overgrowth on a taramite core. (f) BSE image of hyalophane inclusion in K-feldspar. (g) Aluminum content of three pyroxenes in c. (h) Calcium content of three pyroxenes in c.
Published: 01 January 2009
F igure 2. Photomicrographs showing the occurrence of jadeite, omphacite, diopside/hedenbergite, taramite, K-feldspar, and albite. ( a ) Albite porphyroblast and K-feldspar under cross-polarized light. ( b ) Colorless jadeite growing over green omphacite, observed at the periphery of an albite
Journal Article
Published: 01 February 2002
The Canadian Mineralogist (2002) 40 (1): 67–83.
... assemblage comprises brown amphibole (titanian pargasite and kaersutite) and sodic–calcic plagioclase, and the second one comprises green amphibole (mainly katophorite, barroisite, taramite and tremolite), sodic plagioclase, rutile, clinozoisite and calcite. Brown and green amphiboles present similar...
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Journal Article
Published: 01 December 2008
European Journal of Mineralogy (2008) 20 (6): 1005–1010.
... the amphibole is mainly formed by feldspar, quartz, and clinopyroxene. This paper reports a complete mineral description and crystal-structure details for this new taramite end-member that has been recognised by IMA-CNMMC with the vote 2007-015. Holotype potassic-aluminotaramite has the experimental unit...
FIGURES
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a. Intermediate zone of a minipillow showing hypidiomorphic almandine poikiloblasts (Alm), including igneous plagioclase microliths, replaced by omphacite (Omp), and clinopyroxene phenocrysts replaced by omphacite plus rutile aggregates, in a matrix preserving the volcanic texture, but formed mainly of omphacite and Na–Ca amphiboles (Bar, Tar). Albite – amphibole – epidote symplectitic intergrowths (Symp) with a rosette-like shape (dark grey in photo) seem to replace quenched crystals of igneous clinopyroxene. Path from Cogollos to Lugros, close to Cerro del Portachuelo. b. Coronitic eclogite resulting from the eo-Alpine metamorphism of an olivine-rich gabbro. Garnet coronas (Alm) surrounding omphacite aggregates (Omp), partly replaced by barroisite (Bar), are cut by a retrograde eo-Alpine kyanite and omphacite vein (Ky), in a matrix mainly consisting of the association epidote + Na–Ca amphibole. c. Kyanite-bearing eclogite rich in glaucophane (Gln), taramite (Tar) and paragonite, which originated from a Fe-rich basalt underlying the minipillows shown in Figure 4a. Almandine poikiloblasts (Alm) (upper part of the photo) contain rutile (Rt), glaucophane and omphacite inclusions, and are also surrounded at equilibrium by the same minerals. Glaucophane is partly transformed to taramite. d. Same thin section as in Figure 4c, showing kyanite (Ky) and omphacite relics (Omp), partly transformed to paragonite (Pg) and glaucophane (Gln), respectively. Taramite (Tar), darker in the photo, surrounds and partly replaces both paragonite and glaucophane.
Published: 01 October 2000
amphibole. c. Kyanite-bearing eclogite rich in glaucophane (Gln), taramite (Tar) and paragonite, which originated from a Fe-rich basalt underlying the minipillows shown in Figure 4a. Almandine poikiloblasts (Alm) (upper part of the photo) contain rutile (Rt), glaucophane and omphacite inclusions
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Difference-Fourier sections through the A cavity for (a) arfvedsonite, (b) pargasite, (c) nyböite, (d) taramite (from Hawthorne et al. 1996a).
Published: 01 October 2007
Figure 35. Difference-Fourier sections through the A cavity for (a) arfvedsonite, (b) pargasite, (c) nyböite, (d) taramite (from Hawthorne et al. 1996a ).
Journal Article
Published: 01 January 2009
American Mineralogist (2009) 94 (1): 34–40.
...F igure 5. Taramite compositions plotted on Na-Ca amphibole classification diagram of Leake et al. (1997) . ...
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Chemical composition of amphibole. Si vs. Na (per formula unit; pfu) show the retrograde trend from katophorite (amphibole I) and taramite to pargasite (amphibole II).
Published: 01 November 2009
Fig. 4. Chemical composition of amphibole. Si vs. Na (per formula unit; pfu) show the retrograde trend from katophorite (amphibole I) and taramite to pargasite (amphibole II).
Journal Article
Published: 01 August 2007
American Mineralogist (2007) 92 (8-9): 1428–1435.
...) . The root name taramite [with composition defined as A Na B (CaNa) C (Fe 3 2+ AlFe 3+ ) T (Si 6 Al 2 ) O 22 W (OH) 2 in Leake et al. 1997 ] applies to the four ideal end-members having at the C sites the combinations Fe 3 2+ Fe 2 3+ , Mg 3 2+ Fe 2 3+ , Fe 3 2+ Al 2 3+ , and Mg 3 2+ Al 2 3...
FIGURES
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(a) Classification of magmatic, re-equilibrated and neoformed biotite. (b) Compositional trends of the amphiboles from the silicic rocks of the Silhouette complex. Ta, taramite; Ba, barroisite; Kt, karaphorite; Wi, Winchite; Rt, richterite; Rb, riebeckite; Ar, arfvedsonite. Source: (a) classification scheme from Nachit et al. (2005); (b) magmatic–subsolidus and oxidation trends are from Giret et al. (1980).
Published: 18 September 2024
Fig. 7. ( a ) Classification of magmatic, re-equilibrated and neoformed biotite. ( b ) Compositional trends of the amphiboles from the silicic rocks of the Silhouette complex. Ta, taramite; Ba, barroisite; Kt, karaphorite; Wi, Winchite; Rt, richterite; Rb, riebeckite; Ar, arfvedsonite. Source
Journal Article
Published: 26 June 2017
European Journal of Mineralogy (2017) 29 (6): 1005–1013.
...; it commonly overgrows lisetite and is associated with albitic plagioclase and taramitic amphibole. This eclogite occurrence is noted for its bulk-rock compositions rich in (Na + Al) and poor in (K + Mg). The paucity in K prevented the growth of nepheline, and the paucity in Si in precursor jadeite led...
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Sections parallel to 2̅01 showing the electron density in the A cavity for a series of C2/m amphiboles with A ≈ Na; legend as in Fig. 28 (from Hawthorne et al. 1996a); (a) fluoronyboite; (b) pargasite; (c) nyböite; (d) taramite; (2) pargasite.
Published: 01 October 2007
Figure 30. Sections parallel to 2̅01 showing the electron density in the A cavity for a series of C 2/ m amphiboles with A ≈ Na; legend as in Fig. 28 (from Hawthorne et al. 1996a ); (a) fluoronyboite; (b) pargasite; (c) nyböite; (d) taramite; (2) pargasite.
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Compositional ranges of amphibole in eclogites of (a) JDQ03, (b) 91CHXX, and (c) 91CH08 from the Donghai area, Sulu UHP metamorphic belt, on the C(Al + Fe3+ + Cr + 2Ti)–A(Na + K) and Si–BNa diagrams. * Some ferro-sadanagaite and ferro-taramite grains belong to potassic category with K > Na in the A site.
Published: 01 August 2022
Figure 3. Compositional ranges of amphibole in eclogites of ( a ) JDQ03, ( b ) 91CHXX, and ( c ) 91CH08 from the Donghai area, Sulu UHP metamorphic belt, on the C (Al + Fe 3+ + Cr + 2Ti)– A (Na + K) and Si– B Na diagrams. * Some ferro-sadanagaite and ferro-taramite grains belong to potassic
Journal Article
Published: 01 October 2013
The Canadian Mineralogist (2013) 51 (5): 735–770.
...), with less common late-stage sodic-calcic amphiboles (katophorite, magnesio-katophorite, ferro-richterite, and taramite); sodic amphiboles (ferro-ferri-nybøite, ferri-nybøite) are only observed in agpaitic pegmatites. All early pegmatite mafic minerals in low agpaitic pegmatites have negative Eu anomalies...
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Journal Article
Published: 01 March 2012
European Journal of Mineralogy (2012) 24 (2): 217–235.
.... Jadeite dominates where presumably plagioclase was formerly present. Omphacite dominates where augite is internally replaced along cleavage and fractures. Late chlorite, taramite and ferropargasite replace these pseudomorphs. (2) Former plagioclase laths of the ophitic fabric are replaced by jadeite...
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Journal Article
Published: 01 April 1990
American Mineralogist (1990) 75 (3-4): 381–386.
... (jadeite = 38-57 mol°/o and acmite = 0-4 mol%), amphibole, muscovite, apatite, and rutile. The primary amphibole shows wide chemical variations from pargasitic hornblende to magnesian taramite. The Rongchen and Lunan samples also contain primary kyanite. Secondary minerals formed under amphib-olite-facies...
Journal Article
Published: 01 October 2000
The Canadian Mineralogist (2000) 38 (5): 1137–1161.
... amphibole. c. Kyanite-bearing eclogite rich in glaucophane (Gln), taramite (Tar) and paragonite, which originated from a Fe-rich basalt underlying the minipillows shown in Figure 4a. Almandine poikiloblasts (Alm) (upper part of the photo) contain rutile (Rt), glaucophane and omphacite inclusions...
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Journal Article
Published: 01 June 1956
American Mineralogist (1956) 41 (5-6): 509–512.
... called eckermannite by Adamson (1944), on one specimen of hastingsite and one of taramite. The incomplete extinction was found only in sections roughly parallel with (010). On (100), striations parallel with the trace of the c -axis were noted. Copyright © 1956 by the Mineralogical Society of America...
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Figure 3. Sketches of the high-pressure (HP) rocks drawn from backscattered electron images. (A) Eclogite from the Xayacatlán suite. (B) Retrogressed eclogite from the Xayacatlán suite with development of symplectites made by Mg-hornblende, albite, and Ca-rich omphacite, as well as Mg-hastingsite coronas around garnet; these minerals were analyzed to define the retrogressive path. (C) Blueschist from the Ixcamilpa suite with a porphyroblast of glaucophane with a reaction rim of winchite. (D) Metachert with glaucophane and spessartinic garnet. (E) Eclogite from the Esperanza suite; amphibole is Mg-taramite. “x”s indicate typical sites for chemical analyses.
Published: 01 September 2007
-taramite. “x”s indicate typical sites for chemical analyses.