1-20 OF 828 RESULTS FOR

CaO-MgO-Al2O3-SiO2

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
Image
Weathering profiles, key pedogenic features, and geochemical ratios for the...
Published: 01 January 2005
Figure 7. Weathering profiles, key pedogenic features, and geochemical ratios for the Slickrock ( A ), Kokopelli ( B ), Moab ( C ), and Castle Valley ( D ) pedotypes. Al2O3/SiO2 is an indicator of lessivage (clay translocation). The CaO+MgO/Al2O3 ratio is an indicator of calcification
Image
A slice through <b>SiO2</b>-<b>Al2O3</b> plane in the compositional system Na 2 O, <b>CaO</b>, K...
Published: 01 October 2004
F igure 4. A slice through SiO2-Al2O3 plane in the compositional system Na 2 O, CaO, K 2 O, FeO, MgO, MnO, ZnO, Al 2 O 3 , SiO 2 , TiO 2 . The upper plot displays the input compositions of the 1735 analysis LongTest.csv data set. The lower figure displays the stoichiometric model compositions
Journal Article
Published: 01 June 2007
The Canadian Mineralogist (2007) 45 (3): 649-655.
...Xi Liu; Hugh St.C. O’Neill Abstract The effects of small amounts of P 2 O 5 on the partial melting of model spinel lherzolite in the system CaOMgO–Al 2 O 3 –SiO 2 + P 2 O 5 have been investigated at 1.1 GPa in piston–cylinder experiments, in order to constrain the influence of this minor component...
FIGURES
Journal Article
Published: 01 April 2001
The Canadian Mineralogist (2001) 39 (2): 299-308.
... do not lie on the SiO 2 -poor side of the forsterite–diopside join and therefore remain in the tholeiitic portion of the basalt tetrahedron of Yoder & Tilley (1962) at all pressures at least up to 5 GPa. The same thing occurs in the four-component system CaOMgO–Al 2 O 3 –SiO 2 (CMAS...
FIGURES | View All (7)
Journal Article
Published: 01 March 2001
American Mineralogist (2001) 86 (3): 265-270.
... . Shannon , R.D. and Prewitt , C.T. ( 1969 ) Effective ionic radii in oxides and fluorides . Acta Crystallographica , B25 , 925 – 946 . Sepp , B. ( 1998 ) Ti-Einbau in Pyroxenen–Experimentelle Untersuchungen in den Systemen CaOMgOAl2O3SiO2–TiO2 und CaOMgOSiO2–TiO2 , 181 p...
FIGURES | View All (10)
Journal Article
Published: 01 May 1984
Journal of the Geological Society (1984) 141 (3): 595-598.
... studies in the Channel Islands J. geol. Soc. London 1982 139 35 48 Cawthorn R. G. Melting relations in part of the system CaO-MgO-Al 2 O 3 -SiO 2 -Na 2 O-H 2 0 under 5kb pressure J. Petrol 1976 17 44 72 Cawthorn R. G O'Hara M. J. Amphibole fractionation in calc...
Image
(a) μ <b>CaO</b>  – μ <b>Al2O3</b>  diagram calculated for the corundum-bearing metapelit...
Published: 01 February 2002
F ig . 8. (a) μ CaO – μ Al2O3 diagram calculated for the corundum-bearing metapelite and for the reaction zones (stability fields in dark shading) in the system K 2 O–Na 2 O–CaO–FeO–MgO–Al 2 O 3 –SiO 2 , after projection through H 2 O, at constant T = 725 °C and P = 5 kbar. Thick broken line
Image
(a) μ <b>CaO</b>  – μ <b>Al2O3</b>  diagram calculated for the corundum-bearing metapelit...
Published: 01 February 2002
F ig . 8. (a) μ CaO – μ Al2O3 diagram calculated for the corundum-bearing metapelite and for the reaction zones (stability fields in dark shading) in the system K 2 O–Na 2 O–CaO–FeO–MgO–Al 2 O 3 –SiO 2 , after projection through H 2 O, at constant T = 725 °C and P = 5 kbar. Thick broken line
Journal Article
Published: 01 March 2018
European Journal of Mineralogy (2018) 30 (2): 333-348.
... MgO 19.15 19.23(14) 12.83 19.58 15.38 18.25 8.21 8.66 CaO 14.43 14.49(9) 16.44 11.67 14.28 14.68 11.61 11.08 Na 2 O 0.50 0.48(2) 1.44 0.63 0.96 0.81 3.20 2.82 K 2 O 0.10 0.08(2) 0.03 0.00 0.26 0.04 0.24 0.31 Tot. 100.00 100.00 100.00 100.00 100.00...
FIGURES | View All (9)
Journal Article
Published: 01 November 2003
European Journal of Mineralogy (2003) 15 (6): 953-964.
... in the system CaO-MgO-Al 2 O 3 -SiO 2 (CMAS): prospects for simplified (’T-independent’) lherzolite barometry and an eclogite barometer . Contrib. Mineral. Petrol ., 92 , 448 – 455 . Brey , G.P. , Weber , R. , Nickel , K.G. ( 1990 ): Calibration of a belt apparatus to 1800°C and 6 GPa...
FIGURES | View All (7)
Journal Article
Published: 01 January 2010
American Mineralogist (2010) 95 (1): 144-147.
... in the experiments. ( b ) A schematic diagram of the sample assembly. T able 1. Chemical composition of the starting material Pyrolite SiO 2 46.8 Al 2 O 3 4.0 FeO 8.6 MgO 36.5 CaO 3.6     Total (wt%) 99.5 The sample was ground to a powder, and enclosed...
FIGURES | View All (6)
Journal Article
Published: 01 November 2005
American Mineralogist (2005) 90 (11-12): 1934-1939.
.... This texture clearly indicates liquid immiscibility, which can be modeled in the compositional space SiO 2 –Al 2 O 3 –MgOCaO and Al 2 O 3 –CaO–(FeO T + MgO). The spinifex and dendritic forms are due to quenching from a melt at temperature of 1000–1100 °C: melilite was the first phase to crystallize...
FIGURES
Journal Article
Published: 01 July 2014
American Mineralogist (2014) 99 (7): 1449-1461.
... of sapphirine in determining the subsolidus phase relations of MgO-Al 2 O 3 -SiO 2 (MAS) and CaO-MgO-Al 2 O 3 -SiO 2 (CMAS) systems cannot be overlooked, especially at high pressures and temperatures. Furthermore, several studies show that sapphirine has a small field of primary crystallization at 1-bar...
FIGURES | View All (5)
Journal Article
Published: 01 July 2005
American Mineralogist (2005) 90 (7): 1218-1222.
.... and Lasaga, A.C. ( 1991 ) Molecular dynamics simulations of pressure and temperature effects of MgSiO 3 and Mg 2 SiO 4 melts and glasses. Physics and Chemistry of Minerals , 17 , 661 –673. Lange, R.A. ( 1997 ) A revised model for the density and thermal expansivity of K 2 O-Na 2 O-CaO-MgO-Al 2 O 3...
FIGURES
Journal Article
Published: 01 January 2005
American Mineralogist (2005) 90 (1): 206-218.
... (garnet) equilibrium in the CaO-MgO-Al 2 O 3 -SiO 2 (CMAS) system made with barium carbonate and CaF 2 pressure media (Longhi and Baker 1989) were up to 0.8 GPa lower in pressure than careful piston-cylinder determinations of the same equilibrium made with pyrex/talc assemblies ( Presnall et al. 1979...
FIGURES | View All (11)
Journal Article
Published: 01 September 2001
European Journal of Mineralogy (2001) 13 (5): 893-900.
... Iherzolite (Ol+Opx+Cpx+Gr+carbonate) in the system CaO-MgO-Al 2 O 3 -SiO 2 -CO 2 (CMAS.CO 2 ), composition and conditions formation of primary dolomitic carbonate melts according to Dalton & Presnall, 1998a and b ; Gr - graphite; Dm - diamond. The process of diamond crystallisation...
FIGURES
Journal Article
Published: 01 October 2008
European Journal of Mineralogy (2008) 20 (5): 721-734.
.... They have been obtained by processing experimental data for the system CaO–FeO–MgO–Al 2 O 3 –SiO 2 –K 2 O–Na 2 O by Gerya et al . (2004a) . In the treatment of experimental data and calculations with this dataset, mixing properties of En and OK, respectively, the MgSiO 3 and Al 2 O 3 end-members...
FIGURES | View All (8)
Journal Article
Published: 01 August 2011
American Mineralogist (2011) 96 (8-9): 1402-1409.
... mass spectrometry. T able 1. Nominal compositions (wt%) and synthesis conditions Rhyolite Andesite Basalt SiO 2 78.14 64.53 47.73 TiO 2 – 0.57 0.59 Al 2 O 3 11.79 17.58 18.51 FeO – – 8.21 MnO – – 0.15 MgO – 3.33 10.51 CaO – 9.39...
FIGURES | View All (5)
Journal Article
Published: 01 April 2011
American Mineralogist (2011) 96 (4): 553-557.
... deficit of the microprobe analyses. SiO 2 45.5 45.1 (8) Al 2 O 3 3.6 3.1 (6) FeO 8.0 8.1 (4) MgO 37.1 39.2 (8) CaO 3.1 2.2 (4) CO 2 2.7* 2.3*     Total (wt%) 100.0 100.0 The X-ray absorption method for measuring the density of carbonated peridotite melt...
FIGURES | View All (5)
Journal Article
Published: 01 February 2002
The Canadian Mineralogist (2002) 40 (1): 85-101.
...F ig . 8. (a) μ CaO – μ Al2O3 diagram calculated for the corundum-bearing metapelite and for the reaction zones (stability fields in dark shading) in the system K 2 O–Na 2 O–CaO–FeO–MgO–Al 2 O 3 –SiO 2 , after projection through H 2 O, at constant T = 725 °C and P = 5 kbar. Thick broken line...
FIGURES | View All (9)