 | | Journal (article/letter/editorial) | | grossular, forsterite, monticellite, diopside, calcite, and wollastonite. There are many scattered occurrences...yellow grains in white âcrystalline limestoneâ (marble) west of North River, Essex County; similar yellow...occurring in a prospect shaft on a farm about 0.5 mile south of the Parker shaft at Franklin. There is a historical...in calc-silicate rocks of the Tarryall Springs district, Park County, and is reported from the Creswell...Hyndman, Custer County, Idaho, and the Victorio district, Luna County, New Mexico. In Arizona, chondrodite |  | | Journal (article/letter/editorial) | | ~[⢠119 DELTA_. Tke GEOLO(~ of the MXaBL~ DELTA (NATAL). ALEXANDER LOGIE DU ToIr, B.A., D.Sc., F.G...have formed part of an intrusive tongue in the marble, while the other reputed instances of 'inclusions'...Fig. 1 . - - G e o l o y i c a l mal~ o f the Marble Delta. Scale I 0 1 Sand~tour 2 Miles a.d _ ...October 4, 2015 part 2~ THE GEOLOGY OF THE M.~RBLE DELTA. 121 A summary of the general geology has appeared...an account of the economic resources of the Marble Delta. 1 While the tract is one full of problems that |  | | Journal (article/letter/editorial) | | TECTONO-MAGMATIC MODELS OF THE NATAL METAMORPHIC PROVINCE (SOUTH AFRICA) R.J. VOORDOUW Council for Geoscience...Geoscience, PO Box 900, Pietermaritzburg, 3200, South Africa Present address: Equity Exploration Consultants... 2006, South Africa e-mail: hmrajesh@uj.ac.za Š 2012 March Geological Society of South Africa ABSTRACT...arc-like terranes that form the Natal Metamorphic Province in South Africa. Integration of new and compiled...Ga granitic batholith. Introduction The Namaqua-Natal Metamorphic Province comprises a sequence of Meso- |  | Grantham, G.H., Mendonidis, P., Thomas, R.J., Satish-Kumar, M. (2012) Multiple origins of charnockite in the Mesoproterozoic Natal belt, Kwazulu-Natal, South Africa. Geoscience Frontiers, 3 (6) 755-771 doi:10.1016/j.gsf.2012.05.006 | Journal (article/letter/editorial) | | charnockite in the Mesoproterozoic Natal belt, Kwazulu-Natal, South Africa G.H. Grantham a,*, P. Mendonidis...0127, South Africa Vaal University of Technology, Andries Potgieter Boulevard, Vanderbijlpark, South Africa...2012 KEYWORDS Charnockite igneous; Metamorphic; Natal belt; Dehydration CO2 Abstract Four different varieties...different modes of formation, from the Mesoproterozoic Natal belt are described and new C isotope data presented...quarries and river sections make this part of the Natal belt a good location for observing charnockitic |  | | Journal (article/letter/editorial) | | PORTSHEPSTONE. 507 21. DE~0I:OMITIZATION ~n the MARBLE Of PORT SItEPSTONE (~ATAL). By Dr. F. H. HATCa... 516 I. IXTRODUC~IO~. WHILE on a visit to the marble quarries of Port Shepstone, the attention of one...rings were found to consist of a portion of the marble, containing a number of interesting minerals in...microscopic examination. The Port Shepstone marble is well known in Natal, on account of its beautiful white appearance...uniformly fine and even grain of the celebrated marble of Carrara, a fact which militates against its |  | | Journal (article/letter/editorial) | | Barnacles, Phylogeny of. Rudolf Ruedemann, 278. Africa, South, Geology, A. W. Rogers, 83. Alps of Otago, New...Palaeozoic, Australia, F. Chapman, 550. Asbestos in S. Africa, A. L. Hall, 185. Ashprington, Igneous Rocks, Miss...498. Barke, F., Carboniferous Limestone, Wrekin District, 384. Barnacles, Lepadid, Derivation of, J. M...M. Clarke, 278. Barrow, G., High-level Gravels, South of England, 140. Bartrum, J. A., Concretions in...New, R. G. Carruthers. 436. Limestone of Wrekin District, L. M. Parsons, 77; F. Barke, 304. Carruthers |  | | Journal (article/letter/editorial) | | and the dolomites from the Lomagundi Group of South Africa and Rhodesia respectively (about 2.1 ⢠109y)...Nama--Malmesbury and Damara Systems of South and Southwest Africa). The isotope data of these latter samples...r y c a r b o n a t e s f r o m S o u t h e r n Africa. T h e i r findings are generally c o n f i r m...relative proportions o f calcite and dolomite D e t e r m i n a t i o n o f t h e calcite a n d d o l o m i...INVESTIGATIONS ON PRECAMBRIAN CARBONATES FROM SOUTHERN AFRICA For the representation of data the sedimentary |  | | Journal (article/letter/editorial) | | locality the alkali granite forms a lens in the marble close to the main granite contact: as exposed this...less than 4 feet, but the whole contact with the marble is not seen. Specimens collected from the lens...Prospect, Kilchrist (x | ) . The granite at the marble contact bears green soda clinopyroxene and shows...Hypersthene Wollastonite Magnetite Umenite Apatite Calcite Rest Norm (VQ1 \j y i 1 â˘?! 0-43 0-93 0-61...Clinopyroxene granite, vein intrusion in marble, quarries at Port Shepstone, Natal (analyst J. H. Scoon). 1. Hornblende-biotite |  | | Journal (article/letter/editorial) | | The Exogenous Contact-zone at Ben Bullen, New South Wales. By GEEMAIKE A. Department of Mineralogy...about brucite and dactylitic intergrowths between calcite and dolomite. These are discussed in the following...On Cleared Hill the limestone is almost a pure calcite rock, though there are bands containing a little...three typesâ (1) Calcite Marbles, (2) Calcite-dolomite Marbles, (3) Dactylitic calcite-dolomite Marbles...Marbles. Calcite marbles occur on Cleared Hill and are also fairly common in the Main Quarry on Por. 45/46/47 |  | | Book (edition) | | Southern Africa a Collectorâs Guide â Rocks, Minerals and Gemstones of Southern Africa & â - ... T ~ '' .rats en&nes L of Southern Africa A Collectorâs Guide - Struik Publishers (an operating...Printed and bound by Interpak, Pietermaritzburg, Natal All rights reserved. No part of this publication...suggestions and advice. Authorâs Preface Southern Africa has much to offer the amateur geologist, whatever...2 3 4 5 6 7 8 9 10 talc (the softest) gypsum calcite fluorspar apatite feldspar quartz topaz corundum |  | | Journal (article/letter/editorial) | | mentioned reports on the iron-ores of the Rainy River district, on the limestones of Ontario, and on certain...communication was readâ " The Geology of the Marble Delta, Natal." By Alexander Logie DuToit, B.A., D.Sc,...crystalline dolomitic marbles of Port Shepstone, Natalârocks that have already been the subject of several...regularity have heen produced in the adjacent dolomitic marble, of which the innermost is commonly rich in diopside...removed from the intrusion. In certain cases the marble beyond the silicate-zone has been deprived of the |  | | Book (edition) | | OF OF SOUTH AFRICA MINES GEOLOGICAL SURVEY MINERAL RESOURCES OF REPUBLIC OF THE SOUTH AFRICA...Second World War, and partly as a result of it, South Africa experienced vast industrial expansion. This...official âhandbook on the mineral resources of South Africa, it has become necessary to revise, or rather...reason of the great diversity and magnitude of South African mineral deposits and local mining operations...Chamber of Mines of South Africa with Mr G. H. Grange as co-ordinator, and the South, African mining industry; |  | | Book | | Struik Nature (an imprint of Penguin Random House South Africa (Pty) Ltd) Reg. No. 1953/000441/07 The Estuaries...Century City, 7441 PO Box 1144, Cape Town, 8000 South Africa Visit www.randomstruik.co.za and join the Struik...published edition, 2015: Penguin Random House South Africa (Pty) Ltd Publisher: Pippa Parker Managing editor:...Hatfield Campus, University of Pretoria Pretoria, South Africa Dr Lynnette Greyling Department of Geological...Town Private Bag X3 Rondebosch 7701 Cape Town, South Africa Note: The authors and the publishers cannot |  | | Report (volume) | | Australia, and their correlation with Antarctica South Asia within the Gondwanaland ensemble DASGUPTA,...geochronology and tectonic evolution of southern Africa 1 57 77 93 131 145 169 203 231 247 271 289...Circum-East Antarctic, N AM: North America, S AM: South America. PREFACE Australia and Gondwanaland This... 1.7 Ga, and that they have been joined to the South Australian Craton since at least c. l.5 Ga, although...Indo-Antarctic domains. The Pinjarra Orogen extends further south into ice-covered, inland Antarctica. This paper |  | | Report (issue) | | outcrop.................................62 49. Yule Marble quarry, Colorado.................................Colorado Front Range, North Park, Middle Park, and South Park, and in the Gore Range, Mosquito Range, Sawatch...about 350 km (217 mi) north and south of Denverâto Pueblo in the south and to the Colorado-Wyoming border...Shoreline of a reclaimed sand and gravel pit at South Platte Park (southwestern Denver metropolitan area)...Colorado Front Range, in North Park, Middle Park, and South Park, and in the Gore Range, Mosquito Range, Sawatch |
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