 | | Journal (article/letter/editorial) | | Sweden (Sverige) Gladhammar mine, nickel-rich carrollite, 737 Harstig mine, Pajsberg, sarkinite, 681 Norr6...Norr6, arrojadite (hiihnerkobelite), 23o Sjo mine, Grythytte Parish, Orebro, xantharsenite, polyarsenite...Anchor point to StolJbrd rocks, Somerset, calcite, baryte, celestine, sphalerite, pyrite, chalcopyrite, analcime...Cornwall, luxullianite, 441; 442 Scar Crag, Lake District, arsenopyrite, alloclase, glaucodot, cobaltian...Court farm, Ramsgate, Kent, chalk, i6o Tynebottom mine, Garrigill, Cumbria, arsenical marcasite, gersdorffite |  | | Report (issue) | | SURVEY OF SOUTH AFRICA COUNCIL FOR GEOSCIENCE GEOLOGICAL SURVEY OF SOUTH AFRICA MINERALOGY OF SOUTH AFRICA:... COUNCIL FOR GEOSCIENCE GEOLOGICAL SURVEY OF SOUTH AFRICA Scientific Editor R.D. Dixon Linguistic and...Council for Geoscience (Geological Survey of South Africa), 280 Pretoria Street, Silverton, Pretoria or........................... 69 5.1 Overview of South African Occurrences ..............................LAYEREDSUITE,BUSHVELDCOMPLEX.... 111 MINERALOGY OF SOUTH AFRICA: TYPE-MINERAL SPECIES AND TYPE-MINERAL NAMES |  | | Journal (article/letter/editorial) | | Eclogites from the Chicundo (Angola) and Lace (S. Africa) kimberlites have been subject to post-equilibrium...kimberlite intrusions of the Roberts Victor Mine and Bellsbank (S. Africa), and from the Mir and Udachnaya kimberlites...05.002 common phases are analcime, Ba-feldspar, baryte, calcite, apatite, pectolite, natrolite and glass...partial melting, and Spetsius and Taylor (2002) state that all the Siberian eclogites have been partly...the textures of samples from the Roberts Victor Mine, defining Group I as characterised by rounded garnet |  | | Journal (article/letter/editorial) | | blue spherulitic aggregates at the Arhbar mine, Bou-Azzer district, Morocco. Monoclinic. Optically biaxial...given. Composition Cu2AsO4(OH )- 6H20. Named for the mine. [A.M. 68, 1038.] Arsendeseloizite. P. Keller and...As analogue of descloizite occurs at Tsumeb, SW Africa; P2t2121, a 6.075, b 9.358, c 7.634A. Tabular crystals...crusts and spherules from the Neubulach mining district, Schwarzwald, Germany, are rhombohedral, a 7.04/k...809. Crystals up to 8 mm, from the Benitoite Gem mine, San Benito Co., California, are orthorhombic, pseudotetragonal |  | | Book (volume) | | ANDWILLIAMSON MINE, TANZANIA H.-M. Tsai, O. A. Meyer, 0. Moreau, and H. Judith Milledge REGIONAL AND LOCAL VARIATIONS...KIFYBERLiTES IN THE COLORADO-WYC•ING STATE mINE DISTRICT 42 M. E. McCal!um, C. D. Mabarak, and H... K. J. Stracke, 59 OF KIMBEHLITES H.-M. IN SOUTH-EASteRN AUSTRALIA 71 J. Ferguson, an• L. P. Black...CARBONATITEERUPTIVES AT SALTPETRE 111 KOP, SU•}tERLAND, SOU'iH AFRICA J. R. •cIver and J. Ferguson M•NERALOGY AND PETROLOGY...MINERAL CHEMISTRY OF A KIMBERLITE FROM THE PR•I•IER MINE: I•iPLICATIONS FOR THE EVOLUTION OF KiFmEHLITIC |  | | Book | | Distribution of the main Phanerozoic volcanic provinces in Africa (after Choubert and Muret, 1975 and others) ISBN-13...:978·3·642·73968·2 1. Magmatism - Africa. 2. Geology, Structural - Africa. 3. Petrology - Africa. I. Kampunzu, A. B...relevant protective laws and regulations and therefore free for general use. lYpesetting: K +V Fotosatz, Beerfelden...Beerfelden 2132/3145-543210 - Printed on acid-free paper This book is dedicated to the authors' indulgent...Carbonatite-Nephelinite volcanism; ii) the southern Africa Karoo magmatism which is extensively dealt with |  | | Journal (article/letter/editorial) | | and orangeites (Group II kimberlite of southern Africa) and not that of a typical kimberlite. The petrography...II), as established for kimberlites in southern Africa, need not be necessarily valid elsewhere. Hence...discovery of diamond fields of Brazil in 1725 and South Africa in 1880’s (Janse, 1995). The diamondiferous...(1887) to the primary source rock for diamond in South Africa. Much of the earlier work on the Majhgawan pipe...India) as orangeite (Group II kimberlite of South Africa). However, the latters’ work was criticized |  | | Book | | The spellings of names follow CIM; thus pyrite, baryte and sylvine replace the older pyrites, barytes...Germany; Pribram, Czechoslovakia; Broken Hill, New South Wales; Chanarcillo, Atacama, Chile; and in the states...crystals in Cornwall; at Wallaroo, South Australia and Broken Hill, New South Wales. Found in sandstone at...Keweenaw area of north Michigan; at the Copper Queen mine, Bisbee, Arizona and at Georgetown, New Mexico....Witwatersrand, South Africa, are the major economic gold producers. The Republic of South Africa is in fact |  | | Book (edition) | | Albert Museum, and the Imperial Institute, all at South Kensington. Many of the examples referred to in...the British Museum of Natural History, also at South Kensington. NOTE TO SECOND EDITION A few minor...Workings of the Kimberley Diamond Mine at Kimberley, South Africa - IV. {a) Crystal of Diamond in...stone. Most gem minerals when in a perfectly pure state are devoid of colour. Cotton is white and silk nearly...green and red ficial I being due to the chemical state of combination of the chromium. There are, however |  | | Book | | Minerals io Robert Thompson 24 The Crystalline State John Bradley 42 Geology for the Collector Alan...In the shafts and tunnels of a sixteenth-century mine INTRODUCTION arabic^groffcvinditaris.f} norrafludd9...and leave their outermost looselybound electrons free to move around compara¬ tively independently. Substances...the chapter of this book called The Crystalline State it is explained that crystals are distinguished...forsterite into sheets which are almost completely free to and fayalite dissolving in each other; hence | | | Book | | Chemistry of Minerals Robert Thompson The Crystalline State John Bradley Geology for the Collector Alan 10...and leave their outermost looselybound electrons free to move tively independently. Substances bonding...the chapter of this book called The Crystalline State it is explained that crystals are distinguished...linked into sheets which are almost completely free to slide over each other. The resulting soft,...bonded than at low temperatures. In this expanded state it is possible for the structure struc- lower |  | | Journal (issue) | | produced at Chuncheon, Korea, since 1976. As East Africa continues to yield more gems from different localities...Ch'unch'on). Annual production of the nephrite mine (the Daeil Mine) is reported to be approximately 80 000-90...map of nephrite mine area, Chuncheon, Korea. Occurrences The geology of the nephrite mine area consists...1995,24, 8 549 Fig. 3. Mine workers remove nephrite ore at the Daeil Mine, Chuncheon, Korea. The nephrite...iron present in the mineral exists in the ferrous state. This may not be so and the iron values reported |  | | Journal (article/letter/editorial) | | Complex, South Africa R. E. HARMER∗ COUNCIL FOR GEOSCIENCE, PRIVATE BAG X112, PRETORIA 0001, SOUTH AFRICA...melts. The 1341 Ma old Spitskop Complex in South Africa is one of a series of intrusions of alkaline...which intruded the central Kaapvaal Craton of South Africa (see Fig. 1) during the time interval 1450–1200...and west, plunging outwards steeply on the south and south-eastern sides. Coarser 528 HARMER CARBONATITE...and are available from the author. All samples are free of alteration or secondary modification. A thorough |  | | Book | | Congress Catalog Card Number 102 Dodds Street South Melbourne 3205 91-9256 ISBN 0-442-30289-4 Victoria...American turquoise. It means “‘crumbly.’* The authors state that turquoise varies in hardness: Persian material...treasure. In the past they represented the wealth of a state, which its rulers would display on special occasions...effort to soothe the goddess Fortune. The Chibcha of South America offered gold and emeralds to Lake Titicaca...power, and the keeper of the seals was an important state figure. To entrust an ambassador with the signet |  | | Book | | Sciences University of Cape Town Rondebosch, South Africa ISSN 2510-1307 ISSN 2510-1315 (electronic)...relevant protective laws and regulations and therefore free for general use. The publisher, the authors and...Azurite crystals, partly replaced by malachite, Tsumeb mine, Namibia; width of view ca. 3 cm; collection H.E...the Medieval Latin word mina = shaft (minare = to mine). The antique people, e.g., the Greeks and Romans...substance, including each mineral in the crystalline state, is distinguished by its characteristic, geometrically |  | | Journal (issue) | | N D . N O R W AY, PA K I S TA N , PORTUGAL, SOUTH AFRICA, SPAIN, SWEDEN, SWITZERLAND, TURKEY. Editors...RIGGS, Dept. of Geology & Geography, Mississippi State University. Mississippi 39762 Australia: D R ....Subscription for four issues and index number. Post Free $230 (U.S.): £120.00 11 Aagaard, P.. 9011/41/1128...recorded. Detrital volcanic clasts dispersed from the south have cooling ages o f 560 and 5 3 0 m.y. indicating...B a waters to the near surface. The postPermian baryte mineralization which occurred elsewhere along the |  | | Book | | major producing districts, or a representative district if there are many. We name the chief mining companies...supply must come not merely from one district but from a single mine. Thus the physical properties of many...trade in a mineral product may be controlled by a state agency, as by the Minerals and Metals Trading Corporation...eclipsing the mineral magnesite in some areas; the trona mine rather than the Solvay plant is now the main source...comfort. Users of chromite, who must the USSR, South Africa, Albania, and wish that chromite deposits were |  | | Journal (issue) | | Office: SHEFFIELD, YORKSHIRE also in: U.S.A. · SOUTH AFRICA AUSTRALIA RHODESIA & SWITZERLAND • l •...Poynton, K.C.M.G., Permnnent Under-Secretaryof State for the Colonies . . . . . . . . . . . I Editorial...Erosion Cycles and Associated Surfaces of Mengo District, Buganda. By J. W. Pallister, M.Sc., F.G.S., M... . . . . facing p. 5 Erosion Cyclesof Mengo District, Uganda · Fig. 1 Summit Heights on the Buganda.... . page 31 relationship of the . . . . ,, 34 District, Uganda . facing p. 34 Movement of Groundwaterin |  | | Book | | the magma as a whole. Diamondiferous pipes in South Africa and elsewhere contain this kind of rock. When...is so silica rich that much of it crystallizes as free silica in the form of quartz, as in a granite. Along...cavities. Contact metamorphism is usually fairly local in extent but where the country rock is recrystallized...is also convenient since stones do not need to be free from their settings and the test is non-destructive...the stone came from - sometimes down to the actual mine. Today it is commonplace to see in sale catalogues | | | Book | | the magma as a whole. Diamondiferous pipes in South Africa and elsewhere contain this kind of rock. When...is so silica rich that much of it crystallizes as free silica in the form of quartz, as in a granite. Along...cavities. Contact metamorphism is usually fairly local in extent but where the country rock is recrystallized...is also convenient since stones do not need to be free from their settings and the test is non-destructive...stone came from — some¬ times down to the actual mine. Today it is commonplace to see in sale catalogues |  | | Book | | Cristal de Roche - Dauphiné; 12 x 13 cm. Page 8 : Mine du moyen âge. Gravure sur bois tirée de l'ouvrage...gisements saxons, surtout à Freiberg avec sa célèbre mine de Himmelsfürts, à Schneeberg et ailleurs, on a...servant dans l'industrie . • 49. Diamant - Jagersfontein (République d' Afrique du Sud) ; 1,5 x 1,5 cm...Roumanie. Parmi les gisements extra-européens, la mine la plus importante est celle de Getchel à Humboldt...industrie lapidaire dont la base était la riche mine de diverses pierres, calcédoines, agates et quartz |  | | Book (edition) | | GEOGRAPHY OF MODERN AFRICA Second Edition Fully Revised THE GEOGRAPHY OF ODERN AFRICA by William A. Hance...1916--The geography of modern Africa. Bibliography: p. Includes index. 1. Africa-Description and travel-1951I...31-03869-0 9 8 7 6 5 4 3 2 To Margie Preface Africa is an enormous, complex, unpredictable, and fascinating...The author's preparation has involved studying Africa since 1941, teaching courses about the continent...and Peoples of Africa 57 4 The Political Scene in Africa 73 5 PART TWO NORTHERN AFRICA 5 The Maghreb |  | | Book | | Oppmheimer diamond, 253.7 carats, fuund in the Duwirspan mine, Kimberley. It is one of the most beautiful uncur...De Beer:i crystal could easily be confused with baryte, a barium sulphate which is fanned in many metallic...shown here being hdd by the direcmr of 1he Premier mine, William McHardy, on the day of its discovery. On...president of die mine company. De Beers Archives, Kimberley. carats, found in the Duroitspan mine, Kimberley...develop imo a "hound's-rooch" ( I0). The Jwaneng mine occasionally produces "skeletonised~, partly dissolved |  | | Book | | reasons for the approach taken Mineral deposit or mine? A genetic model as the basis for exploration The...many geologists who have given their time during mine visits and responded to our queries. We have benefited...regions. Term broadly applied in the SW USA and South America. Carbonatization A type of hydrothermal...Decline Doline A downward inclined tunnel into a mine or potential ore body. A funnel-shaped depression...shaft excavated upwards for connecting levels in a mine or ore body. Ripping The removal of overburden |  | | Book (edition) | | with a radially fibrous structure present on their free surfaces a rounded form. Many varieties of such...gem-stone of a sherry-yellow color; but when and from free quite pure coloring matter this stone this respect...fluorine, and chlorine are gases when in their free state; only one is liquid namely, mercury; and all...in the ma- only few of these are found in a free state in nature. The gaseous elements, oxygen and nitrogen...diamond itself. to the Diamonds Europe are of quite local distribution, and in the only recorded occurrence |
|
