 | | Journal (article/letter/editorial) | | (1972) 9 by Springer-Verlag 1972 The Garnets in Kimberlite and in the Associated Griquaite and Uhramafic...mineralogy, chemistry and occurrence of the garnets in kimberlite and in the associated griquaite and ultramafie...O'Hara and u hypothesis (1967) for the genesis of kimberlite seems to be in conflict with these findings....examination of the various models for the formation of kimberlite, but as they only investigated the garnets in...African kimberlites are in fact griquaites. Since kimberlite shows a variation in mineralogical features, |  | Yang, Yue-Heng, Wu, Fu-Yuan, Wilde, Simon A., Liu, Xiao-Ming, Zhang, Yan-Bin, Xie, Lie-Wen, Yang, Jin-Hui (2009) In situ perovskite Sr–Nd isotopic constraints on the petrogenesis of the Ordovician Mengyin kimberlites in the North China Craton. Chemical Geology, 264 (1) 24-42 doi:10.1016/j.chemgeo.2009.02.011 | Journal (article/letter/editorial) | | analyses Sr–Nd–Hf isotopes Perovskite Mengyin kimberlite North China Craton a b s t r a c t Precise Sr...However, such data are difficult to obtain for kimberlite, since these rocks are commonly contaminated...considered the emplacement age of the Mengyin kimberlite. However, the altered perovskite shows Pb loss...perovskite grains collected from the main Mengyin kimberlite record uniform Sr and Nd isotopic compositions...for perovskite. Meaningful isotopic ratios for kimberlite can therefore only be obtained from single minerals |  | | Book | | 0-385-05191-3 Doubleday Library of Congress Catalog Number 73-19294 Filmset by London Filmsetters Limited Colour...be regarded as precious-usually these include diamond, ruby, emerald, sapphire, opal and natural pearls...produced when light is reflected from within. Diamond, for instance, owes its pre-eminent position among...topaz 9 corundum 10 diamond 11 the upper half of this scale but not even diamond, at the top of the...struck with a hammer; needless to say, even a diamond can be crushed with no great effort. Yet many a | | | Book | | 191-3 D oubleday Library of Congress Catalog Number 73-19294 Filmset by L ondon Filmsetters Limited Colour...be regarded as precious- usually these include diamond, ruby, emerald, sapphire, opal and natural pearls...produced when light is reflected from within. Diamond, for instance, owes its pre-eminent position among...topaz 9 corundum 10 diamond 11 • • the upper half of this scale but not even diamond, at the top of the...struck with a hammer; needless to say, even a diamond can be crushed with no great effort. Yet many a |  | | Journal (article/letter/editorial) | | sciencedirect.com Geochimica et Cosmochimica Acta 73 (2009) e25–e44 www.elsevier.com/locate/gca SUBJECT...density functional theory 73(15): 4452, (20): 5975, (21): 6565 nitrite oxidation 73(7): 2061 ab initio molecular...dynamics 73(18): 5428 density functional theory 73(18): 5428 abrupt climate change Indian Ocean 73(22): 6771...marine geochemistry 73(22): 6771 accredited ice Antarctica 73(20): 5959 Lake Vostok 73(20): 5959 rare earth...elements 73(20): 5959 achondrites Asuka 881394 73(17): 5189 Cr isotopes 73(17): 5189 Mg isotopes 73(17): |  | | Report (volume) | | Clearance Center, 27 Congress Street, Salem, MA 01970, USA: the item-fee code for this publication is 0305-8719/02/$15...Trowbridge, UK Distributors USA AAPG Bookstore PO Box 979 Tulsa OK 74101-0979 USA Orders: Tel. +1 918 584-2555...5241 Broad Branch Road, NW, Washington, DC 20015, USA (e-mail: james@dtm.ciw.edu) 2 Present address: Arizona...Geological Sciences, PO Box 871404, Tempe, AZ 85287, USA Abstract: Archaean cratons are the stable remnants...off craton, has been perforated by thousands of kimberlite pipes from which a wealth of crustal and mantle |
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