 | | Report (issue) | | DIAMOND-BEARING PERIDOTITE IN PIKE COUNTY, ARKANSAS. By HUGH D. MISEK and CLARENCE S. Ross. LOCATION...exposed in four places near Murfreesboro, Pike County, in southwestern Arkansas, and at three of these places...related igneous rocks FIOUKE 65. Map of parts of Arkansas, Oklahoma, and adjacent States, showing the area...that contains the diamond-bearing peridotite of Pike County, Ark. was first discovered, which has been known...since 1842, lies 2Ā£ miles south-southeast of Murfreesboro, near the confluence of Prairie Creek with Little |  | | Report (issue) | | xenoliths . 61 Jane E. Nielson and Jay S. Noller Kimberlite-transported nodules from Colorado- Wyoming; A...relationship . 91 James K. Meen Magma mixing and kimberlite genesis; Mineralogic, petrologic, and trace element...Breccia, southeast Kalimantan, Indonesia: Intrusive kimberlite breccia or sedimentary conglomerate? . S. C....A note on newly discovered kimberlites in Riley County, Kansas William L. Mansker, Bill D. Richards, and...petrography of the Twin Knobs ttl lamproite, Pike County, Arkansas . 205 Michael A. Waldman, Tom E. McCandless |  | | Report (volume) | | GEOLOGY OF THE DE QUEEN AND CADDO GAP QUADRANGLES, ARKANSAS BY HUGH D. MISER AND A. H. PURDUE *"**Ā» Ā» ..._______ General geography and geology of the Arkansas Valley _________ ____ 12 General geography...system_________________ __________.____________ Arkansas novaculite.___---____-_-___-__-_--____-_-_-__..._________________________ Kimberlite peridotite area._________________________________ American peridotite area...rocks of Arkansas. Age of the peridotite-_____________________________________ Comparison of Arkansas and |  | | Book | | Extended Abstracts SPONSORS American Geophysical Union The San Carlos Apache Tribe The Navajo Tribe...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 |  | | Book (edition) | | Wimmenauer. Special thanks are due The Anglo-American Corporation, who made possible visits to African...Geological Survey and B. C. King (1949) : The American Mineralogist and A. Holmes (1950) : Tanzania Geological...Society of America and W. T. Pecora (1962) 7-4 : The American Mineralogist and A. H. van der Veen (1965B) Figure...Figure 7-5 : The American Mineralogist and A. H. van der Veen (1965B) 7-6 : The American Mineralogist and...Society of South Africa and S.J. Shand (1921A) 10-5: American Journal of Science and J. Gittins and O. F. Tuttle |  | | Book | | Inc. (SME) 8307 Shaffer Parkway Littleton, CO, USA 80127 (303) 973-9550/(800) 763-3132 www.smenet.org...Xenoliths and Mantle Nodules Kimberlite Facies 90 Origin of Kimberlite 109 Origin of Diamond 116 References...Lamproite 139 Genesis of Lamproite in Comparison with Kimberlite 142 References 143 CHAPTER 8 PLACERS 147 Pleistocene...localities of India 4 1.2 Kimberlite and lamproite fields in Brazil 7 1.3 Kimberlite fields in South Africa...4 Major kimberlite sites in Russia 9 1.5 Main Russian diamond mine sites and kimberlite bodies within |  | | Journal (article/letter/editorial) | | Hall, University of Notre Dame, Notre Dame IN 46556 USA a r t i c l e i n f o Article history: Received...include samples Oka137, Oka138 and Oka229. Olivine, augite, and biotite are the dominant phenocrysts in alnoite...Jacupirangite from the Bond Zone consists predominantly of augite (~ 60ā70%) and nepheline (20ā15%) with minor magnetite...on the Hf isotope composition of carbonatite/kimberlite complexes in Greenland and South Africa. W...investigations of minerals from the Broken Hill lodes and mine sequence rocks. Economic Geology 79, 476ā490. Halliday |  | | Journal (article/letter/editorial) | | pseudomorphed phenocrysts of Ti-amphibole, aegyrine-augite, apatite, analcite, barite and calcite in a leucocratic...Helmstaedt, 1982 ). trachytic matrix of aegyrine-augite, K-feldspar and analcite. Raeside and Helmstaedt...intrusion is an alnoite (Streckeisen, 1973) and not a kimberlite (Raeside and Helmstaedt, 1982, 1983). Accordingly...1922); 9=nepheline-hauynite alnoite, Winnett, Fergus County, U.S.A. (Ross, 1926); 10= alnoite, Maimecha-Koti...various / ~ "~ locations / ~ Vy/~/~+' k [ ] North American t v ~ y ~ ~ v Y ~ v TiO2 Fig. 3. K20-A1203-TiO2(wt |  | | Book | | org/details/seventhinternati07inte SEVENTH INTERNATIONAL KIMBERLITE CONFERENCE Cape Town, April 1998 EXTENDED ABSTRACTS...Organising Committee of the 7th International Kimberlite Conference takes no responsibility for authorsā...omissions. SOUTH AFRICA SEVENTH INTERNATIONAL KIMBERLITE CONFERENCE SPONSORS The 7IKC Organising Committee...recently discovered kimberlites of the Siberian kimberlite province. 9 K - rich clinopyroxenes as mantle...Chromite Macrocrysts and their Inclusions, Guaniamo Kimberlite Field, Venezuela. Primary and related diamond |  | | Journal (issue) | | Mouawad Campus 5345 Armada Drive Carlsbad, CA 92008 USA Ā© 2019 Gemological Institute of America All rights...exploit the deposits near Namahumbire. After a year of mine development, MRM took its first rubies out of the...hosted the first auction of rough ruby from its mine near Montepuez (Lucas and Pardieu, 2014). This event...other alteration products. People working in the mine describe the host rock as ārottenā (figure 6). The...deposits are so weathered, they are in a way easier to mine than the secondary deposits. This is counterintuitive |  | | Journal (article/letter/editorial) | | University of Notre Dame, Notre Dame IN 46556, USA a r t i c l e i n f o Article history: Received...oceanic setting mimics that deļ¬ned by cratonic kimberlite provinces and suggests that the Malaitan upper...nepheline normative. The megacryst suite consists of augite, subcalcic diopside, bronzite, garnet, ilmenite...within zircon megacrysts from the Mbuji-Mayi kimberlite, Zaire. Table S1 lists the major and trace element...for eclogitic mantle zircons from the Diavik kimberlite, Slave Province (Schmidberger et al., 2005), |  | Srivastava, Rajesh K., Heaman, Larry M., Sinha, Anup K., Shihua, Sun (2005) Emplacement age and isotope geochemistry of Sung Valley alkalineācarbonatite complex, Shillong Plateau, northeastern India: implications for primary carbonate melt and genesis of the associated silicate rocks. Lithos, 81 (1) 33-54 doi:10.1016/j.lithos.2004.09.017 | Journal (article/letter/editorial) | | hypidiomorphic and mainly consist of nepheline, aegirineāaugite and aegirine, whereas diopside, perovskite, apatite...amount of augite/aegirineāaugite is also present in all the pyroxenite samples. The aegirineāaugite may be...aegirine Melilite and diopside Nepheline and aegirineāaugite/aegirine Hypidiomorphic and allotriomorphic Hypidiomorphic...post-magmatic hydrothermal activity) Diopside, augite/aegirineāaugite and minor calcic plagioclase R.K. Srivastava... The isotope composition of carbonatites and kimberlite carbonate and their bearing on the isotopic composition |  | | Book (volume) | | Sparks Editors Proceedings of 10th International Kimberlite Conference Volume 2 Dedicated to Barbara Scott...Scott Smith Proceedings of 10th International Kimberlite Conference D. Graham Pearson ā¢ Herman S. GruĢtter...Sparks Editors Proceedings of 10th International Kimberlite Conference Volume 2 Special Issue of the Journal...Photograph The 10th International Kimberlite Conference International Kimberlite Conferences (IKCs) are special...146 poster presentations on following topics: Kimberlite geology, origin, evolution and emplacement of |  | | Book | | avec l'editeur. Gold-rich specimen fro1n the Don,e Mine, Tim1nins, Ontario that was presented to GSC in...Ni-Cu-PGE, porphyry deposits, unconfonnity uranium, kimberlite diamond, IOCG, and several types of lode gold...Deposit Types published by the Decade of North American Geo logy (DNAG), it is in fact very different...penetrate the mantle, and include mag1natic Ni-Cu and kimberlite diamond deposits, account for 40% of production...distribution of non-ferrous metalliferous and kimberlite diamond deposil~. Deposits arc colour-coded by |  | Tappe, Sebastian, Jenner, George A., Foley, Stephen F., Heaman, Larry, Besserer, Dean, Kjarsgaard, Bruce A., Ryan, Bruce (2004) Torngat ultramafic lamprophyres and their relation to the North Atlantic Alkaline Province. Lithos, 76 (1) 491-518 doi:10.1016/j.lithos.2004.03.040 | Journal (article/letter/editorial) | | but constant Fe/Mg ratios (Fig. 7) following a kimberlite trend (Mitchell, 1995; Barnes and Roeder, 2001)...intermediate between Mn-depleted ilmenites from kimberlite (Mitchell, 1977) and carbonatitic high-Mn ilmenites...serpentinization as was demonstrated for various kimberlite occurrences (Akella et al., 1979; Mitchell, 1986)...Q32, Q33. These samples also contain aegirine ā augite in the groundmass. Near pure aegirine crystallized...so-called FeTi trend is slightly distinctive from the kimberlite trend exhibited by aillikitic spinels, where |  | | Journal (article/letter/editorial) | | are as follows: Abāalbite, Anāanorthoclase, Augāaugite, Bābaddeleyite, Btābiotite, Chāchlorite, Hyā hypersthene...Kjarsgaard, B.A., 2000. Timing of eastern North American kimberlite magmatism: continental extension of the Great...Axel Heiberg Island, Canadian Arctic Archipelago. American Mineralogist 59, 249 ā 253. Krogh, T.E., Corfu...baddeleyite and zircon megacrysts from the Mbuji ā Mayi kimberlite: constraints on the subcontinental mantle. Chemical...Wyoming: petrologic consequences and U ā Pb ages. American Mineralogist 80, 1317 ā 1327. Siivola, J., 1977 |  | | Book | | Truran, Jr. and A. Heger University of Chicago, IL, USA 1.01.1 INTRODUCTION 1.01.2 ABUNDANCES AND NUCLEOSYNTHESIS...K. Zinner Washington University, St. Louis, MO, USA 1.02.1 INTRODUCTION 1.02.2 HISTORICAL BACKGROUND...Composition (ed. R. F. Wimmer-Schweinsgruber). American Institute of Physics, pp. 23 ā30. Howk C., Savage...P. Boss Carnegie Institution of Washington, DC, USA 1.04.1 INTRODUCTION 1.04.2 FORMATION OF THE SOLAR...permission of University of Chicago Press and American Astronomical Society from Astrophys. J., 1980 |  | | Book | | University, Cambridge, MAo USA 00' K. K. Turekian Yale University. New Haven, cr USA GĀ«~'''''''''<) .......Rudnick University of Maryland, College Park, MD, USA and S. Gao China University of Geosciences, Wuhan...continents (Cogley (1984); reproduced by permission of American Geophysical Union from Rev. Geophys. Space Phys...Shale (Taylor and McLennan, 1985); NASC Ā¼ North American shale composite (Haskin et al., 1966); ES Ā¼ European...Simcoe Volcanic Field, Washington Cascades Riley County, Kansas Central Sierra Nevada, California Colorado/Wyoming |
|
