 | | Journal (article/letter/editorial) | | pyrochlore-group minerals from the Guaniamo kimberlites, Venezuela Victor V. Sharygin a,⁎, Nikolai V....Novosibirsk, Russia Guaniamo Mining Company, Centro Gerencial Mohedano, Office 9D, La Castellana, Caracas...Caracas, Venezuela a r t i c l e i n f o Article history: Received 23 September 2008 Accepted 28 March...Keywords: Pyrochlore Betafite Perovskite Kimberlite Carbonatite Venezuela a b s t r a c t Oscillatory-zoned...minerals are found in the La Ceniza diamondiferous kimberlites, Guaniamo region, Venezuela. This is the first |  | | Journal (article/letter/editorial) | | of twinning) are common phenocrysts; others are apatite, ilmenite, rutile, magnetite, zircon, monazite...few have penetratively intergrown phenocrysts of apatite, ilmenite, rutile and zircon, which we interpret...others include titanomagnetite–ilmenite, monazite, apatite, rutile/anatase, sphene, zircon and garnet. More...monazite, titanomagnetite–ilmenite, rutile–sphene and apatite (Fig. 4d–f). All garnet grains are optically clear...and fractured garnet with interlocking ilmenite, apatite and rutile; scale bar is 500 μm. See enlargements |  | Wang, Zhengrong, Bucholz, Claire, Skinner, Brian, Shimizu, Nobumichi, Eiler, John (2011) Oxygen isotope constraints on the origin of high-Cr garnets from kimberlites. Earth and Planetary Science Letters, 312 (3) 337-347 doi:10.1016/j.epsl.2011.09.061 | Journal (article/letter/editorial) | | Editor R.W. Carlson Keywords: garnet peridotite kimberlite oxygen isotope sub-calcic garnet metasomatism...Introduction Oxygen isotope compositions of garnets from kimberlite have been extensively studied. E-type garnets...standards were interspersed with measurements of kimberlite minerals. Results for standards are as follows:...routinely used for correcting δ 18O values of apatite measured using ILFT. These elements will be examined...for the generation of high-Cr garnet in P-type kimberlite. This component could be fluid and/or melt penetrating |  | GORDON, S. M., LUFFI, P., HACKER, B., VALLEY, J., SPICUZZA, M., KOZDON, R., KELEMEN, P., RATSHBACHER, L., MINAEV, V. (2012) The thermal structure of continental crust in active orogens: insight from Miocene eclogite and granulite xenoliths of the Pamir Mountains. Journal of Metamorphic Geology, 30 (4) 413-434 doi:10.1111/j.1525-1314.2012.00973.x | Journal (article/letter/editorial) | | strike-slip fault/shear zone 73° 40°N Oksu river Rushan-Pshart (Bangong-Nujiang) suture (reactivated...as well as sanidine, mica, quartz, rutile and apatite, are included in garnet. As in DK7, kyanite contains...contain kyanite, quartz, sanidine, and minor rutile, apatite, zircon and monazite. The samples are transected...clinopyroxene, garnet and phlogopite and <1 vol.% apatite and pyrrhotite or rutile. Grain sizes average 1–2...peridotitic garnet xenocrysts from the La Ceniza kimberlite, Guaniamo, Venezuela. International Geology Review |
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