|
|
 |
|||||||||||||||||
|
|||||||||||||||||
 |
|||||||||||||||||
| JOURNAL HOME | HELP | CONTACT PUBLISHER | SUBSCRIBE | ARCHIVE | SEARCH | TABLE OF CONTENTS |
Nagoya University, Department of Earth and Planetary Sciences, Nagoya, Japan
Sr-bearing zoisite and epidote are common constituents of eclogites and associated paraschists throughout the Su-Lu ultra-high pressure (UHP) province, eastern China. The SrO content of prograde zoisite and epidote reaches 3.2 wt% in crystal cores and generally decreases toward crystal margins. Retrograde epidote is poorer in SrO (<0.1 wt%). Preliminary rare earth element (REE) analyses of epidote give La 2 O 3 (up to 2.9 wt%), Ce 2 O 3 (5.9 wt%), and Nd 2 O 3 (3.0 wt%). REE contents of zoisite are distinctly lower (La 2 O 3 up to 0.16 wt%, Ce 2 O 3 up to 0.26 wt%, and Nd 2 O 3 up to 0.16 wt%) than coexisting epidote. Apatite is always more depleted in SrO (0.10-0.59 wt% on average) than coexisting zoisite and epidote, and Sr-Ca partition coefficients for zoisite and epidote and apatite [(Sr/Ca) (sub zo/ep-ap) ] range from 5 to 20. SrO content of K-white mica (0.012-0.044 wt%) is an order of magnitude lower than that of apatite. An evaluation of the SrO content in zoisite and epidote and their modal abundances in seven samples indicates that >70% of the whole-rock SrO is contained in these minerals. Apatite and K-white mica are only minor reservoirs for SrO in these rocks. Zoisite and epidote are thus regarded as the most important Sr reservoirs at UHP conditions where calcic plagioclase and titanite are unstable.
This record provided courtesy of AGI/GeoRef.
This article has been cited by other articles:
|
|
 |
|
  A. Liebscher, G. Franz, D. Frei, and P. Dulski High-Pressure Melting of Eclogite and the P-T-X History of Tonalitic to Trondhjemitic Zoisite-Pegmatites, Munchberg Massif, Germany J. Petrology, May 1, 2007; 48(5): 1001 - 1019. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 P. Monchoux, F. Fontan, P. De Parseval, R. F. Martin, and R. C. Wang IGNEOUS ALBITITE DIKES IN OROGENIC LHERZOLITES, WESTERN PYRENEES, FRANCE: A POSSIBLE SOURCE FOR CORUNDUM AND ALKALI FELDSPAR XENOCRYSTS IN BASALTIC TERRANES. I. MINERALOGICAL ASSOCIATIONS Can Mineral, August 1, 2006; 44(4): 817 - 842. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
D. Mulrooney and T. Rivers REDISTRIBUTION OF THE RARE-EARTH ELEMENTS AMONG COEXISTING MINERALS IN METAMAFIC ROCKS ACROSS THE EPIDOTE-OUT ISOGRAD: AN EXAMPLE FROM THE ST. ANTHONY COMPLEX, NORTHERN NEWFOUNDLAND, CANADA Can Mineral, February 1, 2005; 43(1): 263 - 294. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 C. G. Mattinson, R. Y. Zhang, T. Tsujimori, and J. G. Liou Epidote-rich talc-kyanite-phengite eclogites, Sulu terrane, eastern China: P-T-fO2 estimates and the significance of the epidote-talc assemblage in eclogite American Mineralogist, November 1, 2004; 89(11-12): 1772 - 1783. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
E. Krenn, E. Krenn, and F. Finger Metamorphic formation of Sr-apatite and Sr-bearing monazite in a high-pressure rock from the Bohemian Massif American Mineralogist, August 1, 2004; 89(8-9): 1323 - 1329. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
A. Liebscher, A. Liebscher, and M. Gottschalk The T-X dependence of the isosymmetric displacive phase transition in synthetic Fe3+-Al zoisite: A temperature-dependent infrared spectroscopy study American Mineralogist, January 1, 2004; 89(1): 31 - 38. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 G. Franz and A. Liebscher Physical and Chemical Properties of the Epidote Minerals-An Introduction- Reviews in Mineralogy and Geochemistry, January 1, 2004; 56(1): 1 - 81. [Full Text] [PDF]
|
|
|
|
|
|
M. Enami, J. G. Liou, and C. G. Mattinson Epidote Minerals in High P/T Metamorphic Terranes: Subduction Zone and High- to Ultrahigh-Pressure Metamorphism Reviews in Mineralogy and Geochemistry, January 1, 2004; 56(1): 347 - 398. [Full Text] [PDF]
|
|
|
|
|
|
R. Giere and S. S. Sorensen Allanite and Other REE-Rich Epidote-Group Minerals Reviews in Mineralogy and Geochemistry, January 1, 2004; 56(1): 431 - 493. [Full Text] [PDF]
|
|
|
|
|
|
D. Frei, A. Liebscher, G. Franz, and P. Dulski Trace Element Geochemistry of Epidote Minerals Reviews in Mineralogy and Geochemistry, January 1, 2004; 56(1): 553 - 605. [Full Text] [PDF]
|
|
|
|
|
|
T. ZACK, S. F. FOLEY, and T. RIVERS Equilibrium and Disequilibrium Trace Element Partitioning in Hydrous Eclogites (Trescolmen, Central Alps) J. Petrology, October 1, 2002; 43(10): 1947 - 1974. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
A. Liebscher, M. Gottschalk, and G. Franz The substitution Fe3+-Al and the isosymmetric displacive phase transition in synthetic zoisite: A powder X-ray and infrared spectroscopy study American Mineralogist, July 1, 2002; 87(7): 909 - 921. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
K. P. SKJERLIE and A. E. PATINO DOUCE The Fluid-absent Partial Melting of a Zoisite-bearing Quartz Eclogite from 1{middle dot}0 to 3{middle dot}2 GPa; Implications for Melting in Thickened Continental Crust and for Subduction-zone Processes J. Petrology, February 1, 2002; 43(2): 291 - 314. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
M. Enami and Y. Banno Partitioning of Sr between coexisting minerals of the hollandite- and piemontite-groups in a quartz-rich schist from the Sanbagawa metamorphic belt, Japan American Mineralogist, March 1, 2001; 86(3): 205 - 214. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 F. ROLFO, R. COMPAGNONI, S. XU, and L. JIANG First report of felsic whiteschist in the ultrahigh-pressure metamorphic belt of Dabie Shan, China European Journal of Mineralogy, August 1, 2000; 12(4): 883 - 898. [Abstract] [Full Text] [PDF]
|
|
| JOURNAL HOME | HELP | CONTACT PUBLISHER | SUBSCRIBE | ARCHIVE | SEARCH | TABLE OF CONTENTS |
