 | Wu, Fu-Yuan, Yang, Yue-Heng, Mitchell, Roger H., Li, Qiu-Li, Yang, Jin-Hui, Zhang, Yan-Bin (2010) In situ UāPb age determination and Nd isotopic analysis of perovskites from kimberlites in southern Africa and Somerset Island, Canada. Lithos, 115 (1) 205-222 doi:10.1016/j.lithos.2009.12.010 | Journal (article/letter/editorial) | | from kimberlites in southern Africa and Somerset Island, Canada Fu-Yuan Wu a,ā, Yue-Heng Yang a, Roger...Geology, Lakehead University, Thunder Bay, Ontario, Canada P7B 5E1 a r t i c l e i n f o Article history:...ablation UāPb ages Nd isotopes Perovskite Kimberlite Southern Africa Canada a b s t r a c t Determination...emplacement ages and initial isotopic composition of kimberlite by conventional isotopic methods using bulk rock...kimberlites from Somerset Island, Canada have been selected for in situ perovskite UāPb isotopic age |  | | Journal (article/letter/editorial) | | minerals in six carbonate-kimberlites: Peuyuk, Tunraq, Wesselton, Liqhobong, De Beers, and Benfontein...Benfontein. New analyses of spinel, ilmenite, and perovskite from the lower Benfontein Sill, are consistent with...crystallization appears to be typical of carbonate-rich kimberlite magmas, and is texturally related to the two...and carbonate from later Mg-Al-titanomagnetite, perovskite, and accessory rutile and apatite. The spinels...pre-fluidization to post-fluidization stages of kimberlite emplacement (Haggerty, 1973; Mitchell & Clarke |  | | Journal (article/letter/editorial) | | groundmassilmenite, spinel solid solutions, and perovskite. The discrete ilmenite noduleshavemarginsthat...light REE relative to heavy REE. The enrichmentof perovskite in REE may be related to partitioning of the...The physical and chemical changesundergoneby kimberlite magma during its eruption and crystallization...can be gained by study of groundmassminerals in kimberlite and of late-stagereactionsbetween kimberlitic...kimberlitic minerals and the residualfluids of kimberlite magma.Boyd and Clement (1977)describedmetasomatic zoning |  | | Journal (article/letter/editorial) | | evolution:phlogopitesand oxidesfrom the Fayette County kimberlite, Pennsylvania Rosenr H. HuNren.r ReNoeL D. KIssI-tNG...crustalfragmentsset in a matrix of phlogopite,spinel, ilmenite, perovskite, rutile, carbonate and minor serpentine.Two chemically...activity with stabilizationof Nb-, REE-bearing perovskite. Spinelsreaction rims of ilmenite megacrystsare...fugacitesof 02, 52, and CO2. Introduction Typically, kimberlite consistsof megacrysts,and their inclusions,and...velocity zone (LVZ) related to the genesisof kimberlite and its early stages of evolution. In this regard |  | | Journal (article/letter/editorial) | | 1093/petrology/egn034 Crystallization of Groundmass Spinel in Kimberlite P. L. ROEDER1* AND D. J. SCHULZE2 1 DEPARTMENT...QUEENāS UNIVERSITY, KINGSTON, ONTARIO K7L 3N6, CANADA 2 DEPARTMENT OF GEOLOGY, UNIVERSITY OF TORONTO...MISSISSAUGA, ONTARIO L5L 1C6, CANADA Groundmass spinel grains in 46 kimberlite and related rocks have been...phase that crystallized as small octahedra from kimberlite magma on the journey from the upper mantle to...spinel^magnetite. This zoning trend is unique to spinel in kimberlite, carbonatites and lamprophyres. We suggest that |  | | Journal (article/letter/editorial) | | What is a Kimberlite? Petrology and Mineralogy of Hypabyssal Kimberlites Roger H. Mitchell1, Andrea Giuliani2...analyses. Melt inclusion studies have shown that kimberlite melts contain higher alkali concentrations than...(magmatic and/or crustal), the composition of primary kimberlite melts remains unknown. intrusive bodies of holocrystalline...coherent rock (Fig. 1A) occur at different depths in kimberlite pipes (see Fig. 4 in Giuliani and Pearson 2019...ic k imberlitesā (K PK; formerly ātuffisitic kimberliteā; named after a classic locality in South Africa) |  | | Book | | Mitchell Lakehead University Thunder Bay, Ontario, Canada SPRINGER SCIENCE+BUSINESS MEDIA, LLC Library...petrology. Bibliography: p. Includes index. I. Kimberlite. I. Title. QE462.K5M58 1986 552' .3 ISBN 978-1-4899-0570-3...critique of the advances which have been made in kimberlite studies over the last twenty-five years. Kimberlites...in this book will serve to stimulate further kimberlite studies. Some of the hypotheses discussed will...University and for his help in the continuance of my kimberlite research. This book would not have been possible |  | | Journal (article/letter/editorial) | | diamond. It is propoed that a typical Indian kimberlite is the product of the mechanical mixing of a...e a r i n g kimberlite, and it is p a r t o f the s o u t h e r n I n d i a n kimberlite province {Fig...k s c r o p o u t in the central I n d i a n kimberlite province w h i c h c o n t a i n s t h e Majhagawan...o m b o t h t h e s o u t h e r n and central kimberlite province are o f Late P r o t e r o z o i c age...silicate a n d o x i d e minerals o f I n d i a n kimberlite. An a t t e m p t is m a d e to trace the e v |  | | Journal (article/letter/editorial) | | diamonds (e.g. Prider 1960, Jaques et aI1982). Kimberlite provinces consistently possess the following...Figure 1 Very generalized representation of kimberlite localities. Shaded regions are cratons ;C 1500...m.y. old. Open symbols represent individual kimberlite bodies; closed symbols show provinces. Diamond...(c) epeirogenic f1exuring directly preceding kimberlite intrusion, as in South Africa and Siberia (Dawson...(Dawson 1980). Structural analysis of kimberlite terranes through field mapping, geo- , physical exploration |  | | Journal (article/letter/editorial) | | Petrology 9 Springer-Verlag 1984 The alleged kimberlite-carbonatite relationship: evidence from ilmenite...composition, have been used to refute the "alleged kimberlite-carbonatite relationship". New microprobe analyses...kimberlites. The ilmenites are distinguished from kimberlite ilmenites by higher MnO, FeTiO 3, and Nb2Os,...negligible Cr20 3. The spinels are distinguished from kimberlite spinels by their AI203 and Cr203 contents. There...carbonaterich dikes of igneous origin cut the kimberlite of the Premier Mine, South Africa. Dawson (1980) |  | | Book (volume) | | AmericanGeophysicalUnion Washington,D.C. 20009 1979 Kimberlite Conference Preface Since the first edition...was published in 1979, the Third International Kimberlite Conference was held in Clermont-Ferrand in 1982...concerning rocks now misleadingly referred to as Kimberlite will be removea. Diamonds received attention...still there persists the belief that diamonds anā¢ kimberlite are genetically related. And this in spite of...one can separate out the essential minerals of kimberlite. This comment is pertinent to isotopic studies |  | | Journal (article/letter/editorial) | | Mineral chemistry and crystallization sequences in kimberlite and lamproite dikes from the Sisimiut area, central...C.P. 6128, succ. "A "', Montrkal, P.Q. H3C 3J7 (Canada LITHOS Thy, P., Stecher, O. and Korstg~rd, J...Mineral chemistry and crystallization sequences in kimberlite and lamproite dikes from the Sisimiut area, central...groundmass of olivine, phlogopite, diopside, perovskite, and spinels. Leucite lamproites contain olivine...macrocrysts are believed to be cognate. The primary kimberlite and lamproite magmas originated in the mantle |  | | Journal (article/letter/editorial) | | Departmentof Geology Universityof WesternOntario London, Canada,N6A 587 Abstract The ultrapotassicrocks of the...Spain; the West Kimberley region, Western Australia; the Toro-Ankole region, southwest Uganda; and Gaussberg...nhl opaques) ^nlt' ^d^ni in +6 (skeletal perovskite G G G -dirty phlogopite (phlogopite ) -narrow...interpreted red magnesiochromites found in the Peuyrk kimberlite as having crystallized under relatively reducing...from 3 Apatite from 4 Perovskite from transitional 5 Perovskite from madupite 203 Nd2o3 |  | | Book | | Mitchell Lakehead University Thunder Bay, Ontario Canada SPRINGER SCIENCE+BUSINESS MEDIA, LLC Library...kimberlites and reviews some of the advances in kimberlite petrology since 1986. The work is a critical...although current hypotheses for the genesis of kimberlite and orangeite are critically reviewed. These...Natural Sciences and Engineering Research Council of Canada, Lakehead University, and De Beers Consolidated...8.1. Finsch . . . . . . . . 1.8.2. Barkly West Region. 1.8.2.1. Bellsbank. 1.8.2.2. Sover . . . 1.8.2 |  | | Book | | ABSTRACTS contributed to THE SECOND INTERNATIONAL KIMBERLITE CONFERENCE Bishop's Lodge, Santa Fe, October...ā ā¢A- V\ f I ' , A. DIAMONDIFEROUS SOUTHERN KIMBERLITE OF THE WAJRAKHARUR AREA, INDIA. Jagannadham...known in India from antiquity the presence of kimberlite has been the subject of much specuĀ¬ lation and...were described, but were discounted as being kimberlite (Foote, 1889; Lake, 1890). Subsequently...and Mehr, 1953) but generally conĀ¬ sidered that kimberlite was not present. However, in 1963 Rao and Phadtre |
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