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marialite

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Journal Article
Published: 01 December 2019
American Mineralogist (2019) 104 (12): 1788–1799.
... CO 3 ) component on the Na end-member marialite (Ma = Na 4 Al 3 Si 9 O 24 Cl). Second, the effect of water on this reaction was investigated using the hydrothermally equivalent reaction 2 , H 2 O + scapolite (Ma 80 Me 20 ) = 3 plagioclase (Ab 80 An 20 ) + CaCO 3 + liquid, where the liquid is assumed...
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Journal Article
Published: 01 December 2017
American Mineralogist (2017) 102 (12): 2484–2493.
...Kaleo M.F. Almeida; David M. Jenkins Abstract Scapolites are widespread rock-forming aluminosilicates, appearing in metasomatic and igneous environments, and metamorphic terrains. Marialite (Na 4 Al 3 Si 9 O 24 Cl) is the Cl-rich end-member of the group. Even though Cl-rich scapolite is presumably...
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Journal Article
Published: 01 October 2000
The Canadian Mineralogist (2000) 38 (5): 1201–1213.
... for three natural samples of meionite and for synthetic end-member meionite. Trends in structural parameters and NMR spectra are discussed for the solid-solution series from marialite to meionite. The a cell dimension and 27 Al SATRAS NMR spectra show a continuous change through the series, whereas...
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Journal Article
Published: 01 October 1996
The Canadian Mineralogist (1996) 34 (5): 1039–1050.
...Elena V. Sokolova; Yurii K. Kabalov; Barbara L. Sherriff; David K. Teertstra; David M. Jenkins; Gerald Kunath-Fandrei; Steffen Goetz; Christian Jaeger The crystal structure of synthetic end-member marialite (Ma) Na 4 Al 3 Si 9 O 24 Cl and three samples of Na, Cl-rich scapolite from Pamir (central...
Journal Article
Published: 01 June 1965
American Mineralogist (1965) 50 (5-6): 641–655.
...J. J. Papike; Tibor Zoltai Abstract The crystal structure of an 80.6% marialite scapolite, with a = 12.060 ı.003, c = 7.572 Aű.003, and space group I4/m was determined and refined. Three-dimensional intensities were collected with an equi-inclination, single-crystal diffractometer on a spherical...
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P-T  diagram of the experimental results of scapolite (Scap) stability (hea...
Published: 01 December 2019
Figure 3. P-T diagram of the experimental results of scapolite (Scap) stability (heavy solid line) relative to plagioclase (Plag), halite (Hal), and calcite (Cal). Shown for comparison is the stability of end-member marialite (Ma) from Almeida and Jenkins (2017 , AJ 17, light solid and dashed
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( a ) Thermal stability of <span class="search-highlight">marialite</span> in the presence of water (bulk H 2 O w...
Published: 01 December 2017
Figure 2. ( a ) Thermal stability of marialite in the presence of water (bulk H 2 O wt% indicated) at 2.0 GPa, where X NaCl Bulk indicates the mole fraction of NaCl/(H 2 O+NaCl) for the bulk mixture and not necessarily for NaCl l (= H 2 O-NaCl-silicate-liquid). Estimated hydrothermal melting
Journal Article
Published: 01 April 2003
The Canadian Mineralogist (2003) 41 (2): 529–540.
...Yuanming Pan; Ping Dong Abstract Application of an X-ray fluorescence (XRF) microprobe for the analysis of single grains (80 to 1,000 μm in diameter) of Cl-rich minerals for Br has been evaluated for fluorapatite, chlorapatite, scapolite-group minerals (marialite and meonite) and sodalite...
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Journal Article
Published: 01 December 2008
The Canadian Mineralogist (2008) 46 (6): 1555–1575.
...-squares refinement); there is an intrinsic steric stress between the two frameworks, the magnitude of which is a function of chemical composition. Evidence of the resulting structural strain is the large U eq values for Cl at the A site across the marialite–meionite series and the large U eq values...
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Journal Article
Published: 01 December 2008
The Canadian Mineralogist (2008) 46 (6): 1527–1554.
..., Al, (Fe 3+ ), and A represents Cl, (CO 3 ), (SO 4 ). They constitute a non-binary solid-solution series involving the end members marialite (Na 4 [Al 3 Si 9 O 24 ] Cl, Ma ) and meionite (Ca 4 [Al 6 Si 6 O 24 ] CO 3 , Me ). The crystal structures of eighteen scapolite-group minerals from Me 4.9 to Me...
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Journal Article
Published: 07 September 2022
Geological Magazine (2023) 160 (1): 95–106.
...-shaped marialitic scapolite (Na-rich end-member) rich zones with variable Cl contents ranging from 1.0 wt % to 2.9 wt % have been identified in proximity to the ore-bearing hydrothermal fluid activity zones. Although scapolite is formed as a product of regional metamorphism in many places, in this study...
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<span class="search-highlight">Marialite</span> (Me 0 )  C P  &#x2F;R data extrapolated from straight-line fits to the...
Published: 01 December 2017
Figure 5. Marialite (Me 0 ) C P /R data extrapolated from straight-line fits to the scapolite data from Komada et al. (1996) . Heat-capacity measurements were made at temperatures ranging from 298–1000 K. Heat-capacity expression for marialite given in Table 6 .
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P-T  diagram of the higher-pressure results of <span class="search-highlight">marialite</span> (Mari) stability. ...
Published: 01 December 2017
Figure 1. P-T diagram of the higher-pressure results of marialite (Mari) stability. Halite liquidus from Akella et al. (1969) . Jadeite (Jad) + quartz (Qtz) breakdown to albite (Alb) from Holland (1980) . Open circles indicate growth of albite; solid circles indicate growth of marialite
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( a )  G ′ vs.  T  plot for reaction 1. Enthalpy and entropy of <span class="search-highlight">marialite</span> a...
Published: 01 December 2017
Figure 6. ( a ) G ′ vs. T plot for reaction 1. Enthalpy and entropy of marialite are calculated using the derived Δ H ° and Δ S ° of reaction, which are the negative of the intercept and slope of the line, respectively. ( b ) Calculated location of reaction 1 based on the thermochemical values
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Compositional variation across the <span class="search-highlight">marialite</span>–meionite series: (a) Variation...
Published: 01 December 2008
F ig . 7. Compositional variation across the marialite–meionite series: (a) Variation in total Al (apfu ) as a function of Ca content ( apfu ); (b) Variation in (CO 3 ) + (SO 4 ) (apfu ) as a function of Ca content ( apfu ); black circles: I 4/ m structures; white circles: P 4 2 / n
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Variation in α angle (see text) in the <span class="search-highlight">marialite</span>– meionite series as a func...
Published: 01 December 2008
F ig . 17. Variation in α angle (see text) in the marialite– meionite series as a function of (a) total Al ( apfu ) and (b) a cell-parameter; legend as in Figure 6 .
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The distribution of  AM  4  clusters across the <span class="search-highlight">marialite</span>–meionite join.
Published: 01 December 2008
F ig . 14. The distribution of AM 4 clusters across the marialite–meionite join.
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Variation in  a ,  c  and  V  as a function of  Me   x   in the <span class="search-highlight">marialite</span>–m...
Published: 01 December 2008
F ig . 16. Variation in a , c and V as a function of Me x in the marialite–meionite series; legend as in Figure 6 .
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BOND VALENCES IN THE IDEAL UNSTRAINED  I 4&#x2F; m  END-MEMBER <span class="search-highlight">MARIALITE</span> (UPPER)...
Published: 01 December 2008
TABLE 1. BOND VALENCES IN THE IDEAL UNSTRAINED I 4/ m END-MEMBER MARIALITE (UPPER) AND MEIONITE (LOWER) STRUCTURES *
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Variation in  M – A  distance as a function of Ca content in the <span class="search-highlight">marialite</span>–...
Published: 01 December 2008
F ig . 8. Variation in M – A distance as a function of Ca content in the marialite–meionite series; legend as in Figure 3 .