 | Wu, Fu-Yuan, Yang, Yue-Heng, Mitchell, Roger H., Li, Qiu-Li, Yang, Jin-Hui, Zhang, Yan-Bin (2010) In situ UâPb 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,â, 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:...UâPb ages Nd isotopes Perovskite Kimberlite Southern Africa Canada a b s t r a c t Determination of...emplacement ages and initial isotopic composition of kimberlite by conventional isotopic methods using bulk rock...twelve samples from 7 kimberlites from Somerset Island, Canada have been selected for in situ perovskite |  | | Journal (article/letter/editorial) | | minerals in six carbonate-kimberlites: Peuyuk, Tunraq, Wesselton, Liqhobong, De Beers, and Benfontein...crystallization appears to be typical of carbonate-rich kimberlite magmas, and is texturally related to the two...pre-fluidization to post-fluidization stages of kimberlite emplacement (Haggerty, 1973; Mitchell & Clarke...residuum with progressive crystallization of kimberlite magma is typical and probably more common than...for estimating kimberlite compositions. Skinner & Clement (1979) proposed a kimberlite classification |  | | Journal (article/letter/editorial) | | 1093/petrology/egn034 Crystallization of Groundmass Spinel in Kimberlite P. L. ROEDER1* AND D. J. SCHULZE2 1 DEPARTMENT...QUEENâS 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) | | Springer-Verlag1978 Garnet Lherzolites From Somerset Island, Canada and Aspects of the Nature of Perturbed...Geology,LakeheadUniversity,Thunder Bay, Ontario, Canada P7B 5El Abstract. Garnet lherzolite xenoliths...perturbed geotherm existed in this region at the time of kimberlite intrusion. The formation of perturbed...xenoliths derived from above and below the point of kimberlite liquid segregation. The lower temperature limbs...steady state geotherm and are sampled by the kimberlite which after segregation from the diapir rises |  | | Journal (article/letter/editorial) | | 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...zoning trend" toward enrichment in MgTiO, and a "kimberlite reaction trend" toward enrichmentin FeTiO, and...describedcomplex reaction mantles on ilmenite nodules in kimberlite and discussedtheir signifcance as indicators |  | | Journal (article/letter/editorial) | | evolution:phlogopitesand oxidesfrom the Fayette County kimberlite, Pennsylvania Rosenr H. HuNren.r ReNoeL D. KIssI-tNG...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...02-0030$02. 00 30 in the mid- to late-stagesof kimberlite evolution' Since the evolution of a melt is usually... HUNTER ET AL.: PHILOGOPITES AND OXIDES FROM KIMBERLITE 1979; Mitchell, 1979) and is the rationale used |  | | 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 imberlitesâ (K PK; formerly âtuffisitic kimberliteâ; 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 |  | | Report (issue) | | OF THE INTERIOR GEOLOGICAL SURVEY LAKE ELLEN KIMBERLITE, MICHIGAN, U.S.A. by E. S. McGee and B. C. Hearn...Location map for the Lake Ellen kimberlite Magnetic map of the Lake Ellen kimberlite, showing outcrops P nrl...ilmenites A. Megacrysts and xenocrysts, Lake Ellen kimberlite B. Lake Ellen megacrysts and xenocrysts compared...eclogite and pyroxenite xenoliths from Lake Ellen kimberlite Temperature-pressure diagram, Lake Ellen xenoliths... 3. 4. 5. 6. Megacrysts from the Lake Ellen kimberlite Composite xenocrysts A. Garnet-clinopyroxene |  | | Journal (article/letter/editorial) | | Lakehead University, Thunder Bay, Ontario P7B 5El, Canada Abstract. Phlogopites in the wolgidites, fitzroyites...low pressures are very different to those of kimberlite micas. A n origin of these lamproites involving...last ten years in understanding the petrology of kimberlite but comparable studies of orendite-type lavas...potassic rocks. (Barton 1979.) Comparisons with Kimberlite Mica Comparisons with Mica from Other Potassic...occurring as A1vl. The compositional field of kimberlite mica in terms of A1203 and TiO2 is shown in fig |  | | 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) |  | | 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 |  | | Report (issue) | | CIRCULAR 842 The Potential for Diamond-Bearing Kimberlite in Northern Michigan and Wisconsin Prepared in...Resources The Potential for Diamond-Bearing Kimberlite in Northern Michigan and Wisconsin By W. F. Cannon...Department of Natural Resources Description of a kimberlite pipe and possible cryptovolcanic structures and...1913? -------------------------The Lake Ellen kimberlite ------------------------- 1 1 1 1 3 4 4 4 4...relationship between cryptovolcanic structures and kimberlite -----------~---------------Do Wisconsin drift |  | | Journal (article/letter/editorial) | | in kimberlites: Elwin Bay and Tunraq kimberlites, Somerset Island, Canada (MITCHELL, 1978, 19â79); kimberlitic...kimberlitic dyke, Keith township, Ontario, Canada (WATSON et af., 1978); Central West Greenland kimberlites...are apparently of rimmed crystals surrounded by kimberlite matrix. We extend the pioneering study of CARSWELL...adjacent rocks, can be expected during intrusion of kimberlite magma into peridotitic rocks. Petrographic textures...2 rim of separate grain; ewe of nodule and kimberlite matrix, 4 Ti02 O-0.3, A1203 O-0.5, We03 SYIIIPlectite |  | | Report (issue) | | 3. 4. 5. 6. 7. 8. Geologic map of Williams kimberlite diatremes Magnetic map of Williams 1, 2 and 3...was occurring just prior to incorporation in kimberlite and that ascent was rapid enough (40-70 km/hr)...recrystallization before or during inclusion in kimberlite is suggested by larger (up to 3mm) euhedral olivines...pressure and temperature prior to inclusion in the kimberlite, followed by metasomatic introduction of phlogopite...variations of peridotites seem most compatible with kimberlite generation and ascent during dynamic diapiric |  | | Journal (article/letter/editorial) | | Geology, University of Western Ontario, London, Canada N6A 5B7 Previously proposed substitution mechanisms...compositions. For the majority of phlogopites from the kimberlite group and for all those crystallized in the experimental...(Dawson and Smith 1975), and "core phlogopite" from kimberlite and their xenoliths (Boettcher et al. 1979).... e : phlogopite megacrysts in kimberlite (Dawson and Smith 1975; Mitchell 1979), inclusion of diamond...xenolith in kimberlite (Griffin et al. 1979), from garnet-peridotite xenolith in kimberlite (Danchin 1979) |  | | 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 anâą 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) | | New Brunswick Fredericton. New Brunswick. E3B 5A3 Canada Abstract The two generationsof micas in the Shaw's...feldspar lamprophyre)of northern New Brunswick, Canada,are TiO2-richphlogopiteswith variable but low silica...contains micas unlike those in minettes.Those kimberlite phlogopitesthat match minettemicasare predom...Geology, University of Regina, Regina, Saskatchewan,Canada. 0003-004)0E4l0102-0Ml$02.00 4l K-feldspar lamprophyres)and...phlogopiteshave this sum less than 8. The Shaw's Cove Canada,where it has been emplacedalong a conglomer- micas |  | | 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...interpreted red magnesiochromites found in the Peuyrk kimberlite as having crystallized under relatively reducing...Natural Science and Engineering Research Council of Canada grant to A.D.E. References Arima, M. and Edgar...Cosmochimica Acta, 32, 1057-1086. Green, T. H. (1980) Island-arcand continental building magrnatism-a review |  | | 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...macrocrysts are believed to be cognate. The primary kimberlite and lamproite magmas originated in the mantle...phlogopite points to a relatively low as,o.~ in the kimberlite magmas. Higher as,o.~ appears to have prevailed |  | | Journal (article/letter/editorial) | | also provoked debate. Fresh, hypabyssal-facies kimberlite from S. W. Pennsylvannia contains a well-preservedmegacrystand...general characteristicsof the Fayette County kimberlite are describedin a companionpaper(Hunter et al...occur as a megacryst/phenocryst phasein this kimberlite but rather as inclusions in olivine and garnet...shadedareasare the rangesof compositionsin the sloan-Nix kimberlite pipes in colorado and wyoming (Eggler er al....kelyphite rims, and in the groundmass of this kimberlite, which themselves show systematic chemical variability |  | | Report (volume) | | BULLETIN 1604 Garnets are useful tracer minerals for kimberlite prospecting in Montana, and garnet color and...Bibliography: p. 32 Supt. of Docs. no.: 1 19.3:1604 1. Kimberlite-Montana. 2. Garnet-Montana. I. McGee, E. S. II...Abstract Garnet is a useful tracer mineral for kimberlite prospecting, and garnet color can specifically...minerals (Leighton and McCallum, 1979). Garnet in kimberlite is most commonly derived from disaggregated upper...upper mantle material. Garnet in kimberlite can also be derived from lower or upper crustal rocks or |  | | Report (issue) | | Abstract Garnet is a useful tracer mineral for kimberlite prospecting and garnet color can specifically...minerals (Leighton and McCallum, 1979). Garnet in kimberlite is most commonly derived from disaggregated upper...upper mantle material. Garnet in kimberlite can also be derived from lower or upper crustal rocks, or...were disaggregated and incorporated into the kimberlite during its eruption. Garnets from any of these...these sources could be distinctive indicators of kimberlite in a drainage basin where other garnet-bearing |  | Nasir, S., Al-Khirbash, S., Rollinson, H., Al-Harthy, A., Al-Sayigh, A., Al-Lazki, A., Theye, T., Massonne, H.-J., Belousova, E. (2011) Petrogenesis of early cretaceous carbonatite and ultramafic lamprophyres in a diatreme in the Batain Nappes, Eastern Oman continental margin. Contributions to Mineralogy and Petrology, 161 (1) 47-74 doi:10.1007/s00410-010-0521-3 | Journal (article/letter/editorial) | | rocks include group-I ââbasalticââ, and group-II kimberlite ââorangeites, micaceous lamprophyricââ, and olivine...prepared crushed rocks in commercial laboratories in Canada (2 samples, 3 kg each) and in Australia (2 bulk...Activation Laboratories Ltd., Ancaster, Ontario, Canada. Several standards were used to check accuracy...(after Belousova et al. 2002) C carbonatite, K kimberlite a Data below EMP detection level Fig. 3 a Field...enhanced radiogenic Sr in-growth in the source region of the Asseelah UML suite and may be a function |
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