DOCSLIB.ORG

INIS-Mf—10445 I Gtoiconoats U

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text

Load more

INIS-mf—10445 I GtoicoNoats u PO1CHEFS1ROOM GEOKONGRES 84 20STE GEOLOGIESE KONGRES VAN DIE 20TH GEOLOGICAL CONGRESS OF THE GEOLOGIESE VERENIGING GEOLOGICAL SOCIETY VAN SUID-AFRIKA OF SOUTH AFRICA POTCHEFSTROOM, 9 — 13 JULIE/JULY, 1984 OPSOMMINGS ABSTRACTS DEEL 1 ALGEMEEN PART 1 GENERAL AFKORTINGS/ABBREVIATIONS (GS) Geostatistiek Geostatistics (M) Mineralogie en Petrologie Mineralogy and Petrology (0) Oopsittings Open Sessions (P) Plakkaat Poster (S) Sedimentologie Sedimentology (V - D) Ventersdorp- en Dominiumopeenvolgings Ventersdorp and Dominion Successions * Presidensiele Rede Presidential Address INHOUD/CONTENTS (P) BARNARDO, D.J. and G.F.J. HORN Bauxite in Natal 1 (M) BEUKES, G.J., A.E. SCHOCH, H. DE BRUIYN, W.A. VAN DER WESTHUIZEN en L.D.C. BOK "n Buitengewone mineraalparagenese in sillima= niethouđenđe gesteer.tes van die Pofadder-distrik. 4 (O) BEUKES, N.J. and J.P. VAN WYK Thrust faulting along the edge of the Kaapvaal Craton in Griqualand West 8 (O) BRISTOW, J.W. Plinian air-fall activity and rhyolitic dome building in the Bumbeni Complex, Southern Lebombo . 11 (S) CAIRNCROSS, B. Depositional environments and coal seam charac= teristics in the north-eastern Witbank Coalfield.. 14 (P) CAMISANI-CALZOLARI, F.A.G.M., W.J. DE KLERK and P.J. VAN DER MERWE South.' African uranium resource estimates 17 (GS) CARTER, C.J. and R. SCHNEEWEISS Application of geostatistical techniques at the Otjihase Cu-Zn-Ag-S orebody, South West Africa/ Namibia . 19 (S) CHRISTIE, A.D.M. Depositional models for coal seam formation in the Klip River Coalfield, northern Natal 22 (S) COLLISTON, W.P. and J.C. LOOCK The determination of the stratigraphie polarity in Proterozoic metasedimentary rock using sedimentary cycles 26 (0) COLLISTON, W.P., H.E. PRAEKELT, D. STRYDOM, G. VAN ASWEGEN, H.J. BLIGNAULT and A.E. SCHOCH The recognition of low angle thrusts in central Bushmanland, Namaqua Mobile Belt 29 (M) CONRADIE, J.A. en A.E. SCHOCH Petrologiese en petrochemiese verwantskappe van die Koperbergsuite, Namakwaland 33 (M) DIXON, ROGER Sugilite and the associated mineral assemblage from Wessels Mine, Kalahari Manganese Field 36 (0) EBERLE, D. and E.H. STETTLER A quantitative geophysical stratigraphy in the Western Bushveld Complex 40 (M) GERINGER, G.J., H. DE BRUIYN, B.J.V. BOTHA and W.A. VAN DER WESTFUIZEN The geochemistry and petrogenetic relationships of some granites with mafic inclusions in the Keimoes Suite, the Namaqua Mobile Belt - A possible, magma mixing model 4 5 (S) GERRARD, I., K. STALLBOM and P. UNSTEAD Late Aptian to Cenomanian submarine fans, west coast, Republic of South Africa 49 (V - D) GROBLER, N.J. and N.A. BLEEKER A Makwassie-Rietgat complex SW of Warrenton, Northern Cape 52 / (M) HALLBAUER, D.K. Archaean granitic sources for the detrital mineral assemblage in Witwatersrand conglomerates 53 (M) HALLBAUER, D.K. and M. NAMI Gold distribution in Witwatersrand palaeo-placers 57 (S) KARPETA, W.P. The sedimentology and stratigraphie setting of the "A" reef placers, Aandenk .Formation, on President Steyn Gold Mine, Welkom, Orange Free State 61 (M) KLEYENSTÜBER, A.S.E. The mineralogy of the Voëlwater sedimentary rocks in the North-Western Cape, South Africa ... 63 (GS) KRIGE, D.G. The use of geostatistics in defining and re= ducing the uncertainty of grade estimates 66 * KYLE, D.L. Mineral discovery - The philosophy and strategy 6 7 (GS) LEMMER, I.C. Estimating recoverable reserves in a new way ... 72 (0) LOOCK, J.C. Zircons from the granites and gneisses of the Namaqua Mobile Belt and the interpretation of radiometric ages 77 (GS) MAGRI, E.J. and J.S. MOSTERT Some applications of geostatistics in mineral exploration 80 (M) MARSH, JULIAN Geochemistry of Karoo basalts and dolerites in the northeastern Orange Free State : Recognition and origin of two new Karoo basalt magma types . 87 (P) MARSH, JULIAN Karoo basalts of the Springbok Flats, Transvaal: Geochemistry and correlation 91 (S) MASON, T.R. Late Trias^ic Isopodichnus from the Natal Drakensberg 95 (S) MASON, T.R. and A.D.M. CHRISTIE Palaeoenvironmental significance of Ichnogenus Diplocraterion Torell from the Vryheid Forma= tion of Natal 99 (V - D) MCCARTHY, T.S. and A.B. CADLE The geology of the Bezuidenhout Valley graben .. 103 (O) MEYER, R., J.H. DE BEER and S.J. JOUBERT Geoelectrical study of the Bushveld Complex .... 105 (S) MILLER, R. McG., E.E. FREYER and I.W. HaLBICH A turbidite succession equivalent to the complete Swakop Group 108 (M) MIYANO, T. and N.J. BEUKES Mineralogy and petrology of the amphibole asbestos-bearing rocks of the Penge Iron For= mation, Transvaal Supergroup, Penge area 109 (M) MOORE, A.E. ' The post-Gondwanaland alkaline igneous province of Southern Africa 114 (GS) MORRISON, D.L., and S.L. MILLER What can be done with computerized gold data values 118 (P) OBERHOLSTER, R.E. Some examples of the application of geology • and mineralogy to building materials research 122 (P) SAGGERSON, E.P. and L.M. TURNER The metamorphic map of South Africa (1:1 000 000) 125 (M) SCHOCH, A.E., en E. KLATT Die verspreiding van pekels en kooldioksied in vloeistofinsluitsels van die gneise en gemeta= morfiseerde sedimentere gesteentes van die Noodwes-Kaap 128 (M) SMITS, G. The mineralogy on planes of unconformity within the Central Rand Group of the Witwaters= rand 133 _v (M) SOUTHWOOD, M.J. The influence of mineralogical parameters on the leachability of low-grade nickel deposits. 135 (V - D) STANISTREET, I.G. and T.S. MCCARTHY The tectono-sedimentary setting of the Ventersdorp outlier at Kromdraai, north-west of Johannesburg 138 (GS) STEFFENS, F.E. 1 Introduction to geostatistics. 140 (O) STRYDOM, D. Techniques employed during the structural- , stratigraphic mapping of the Proterozoic rocks of Western Bushmanland 142 (M) SWASH, P.M. The role of the mineralogist in the copper- mining industry 145 (P) TERBLANCHE, J.C. "n Fasieanalise van die basale Beaufortgroep in die Noordwes-Orar je-Vrystaat 148 (M) THERON, J.C. and A.E. 3CHOCH Uranium and thorium distribution in the Contreberg granite, Darling 150 (M) TORDIFFE, E.A.W. and A.E. SCHOCH Multi-element interpretation of regional stream sediment geochemical survey results from the Bushmanland region 154 (P) TWEMLOW, S.G. The Archaean gold-telluride-sulphide and gold-telluride mineralisation of a multiple stage hydrothermal vein deposit at the Com= moner Mine, Zimbabwe 156 (O) VAN ASWEGEN, G. The significance of the Gladkop Suite for the "Basement Problem" in the Namaqua Mobile Belt. 159 (M) VAN REENEN, D.D. Characterization of metamorphic fluid compo= sition associated with retrograde metamorphism in the Limpopo Belt in South Africa 163 (GS) VAN TONDER, G.J. Geostatistics applied in geohydrology 166 (S) VISSER, J.N.J. The problem of facies analysis in the Permo-Carboniferous Dwyka Formation 173 (M) VON RAHDEN, H.V.R. & M.J.E. Quantitative X-Ray diffraction: Fact or fantasy? 177 (GS) WOOD, I.D. An application of geostatistics in the Eastern Transvaal Coal Fields 178 ADDENDUM * WL VAN WYK: Role of the South African Government in the Mining Industry. (S) N STAVRAKIS & N HILLER: A Triassic Arid-Zone Anastomosed Fluvial Deposit from the Karoo Basin. (S) BG ELS: Sedimentological Controls of Gold Distribution in the Middelvlei Reef, Doornfontein Gold Mine. (S) MP MULLINS: Gold Distribution as related to Sedimentary Facies in the VCR on Deelkraal Gold Mine, Carletonville Goldfield. (S) IZAK C'. RUST: Sedimentary Facies. ******** ]- BAUXITE IN NATAL by D.3. BarnardD and G.F.J. Horn Geological Survey, Private Hag X 112, Pretoria, 0001 Following the discovery of bauxite deposits in the Mooi River, Ldeza and Ngome areas in Natal by L private concern, the Geological Survey launched a reconnaissance txploretion program tD locate Dther simil- ar deposits in this province. Bauxite is an aluminous, laterit^c weathering product of a suitable parent rock. It contains ksolinite, goethite-limonite end qusrtz, with sufficient quantitie? of aluminium hydroxide in the form of gibbsite (AlgCb^HgD) to be Economically viable as a source of alumina (AI2O3) and aluminium metal. Bauxite deposits in Western Australian deposits operate at s cut-Dff Df around U8r,'j oibbsite, which is the lomest-arade material currently mined. "" In South Afriud, the most suitable conditions for the formation Df bauxite are found in Natal. Potential targets UJBTE selected on the basis of three factors important in the process of bauxitisstiDn, i.e. precipitation, geomprphology and parent rack. Selected targets were inspected in the field and surface samples of the parent rock and it's directly associated weathering products were collected. Any promising targets were then followed up by auger drilling and samples of potential bauxitic material mere col- lected. Samples of the parent rock and the weathering products were analysed in the laboratory of the Geological Survey by mesns of XRF for major oxides while loss on ignition was determined gravimetrically. In addition, analyses of the quartz content of samples of the weather- ing products were carried out by XRD. Available alumina is the amount of Al2U- extractable from bsuxitB under plant conditions. A technique was devised tD calculate the gibbsite content, end from this the percentage of available alumina, using the concentrations of qutrtz, Fe203jloss on ignition and re- active silica. The latt.^ ^.s. the difftrence ast-.S-n the totsl silica content end thL j.-njura j_f qu:.rtz in th= scruple. IncicLtec resources Df materiel cznzsir.Lrc mere then 2Q*-. avziliule clun-.in^ LEIE EubEsqusntly G^ti-rnl-in f^r biX;. bi.lt results by using the polygcnsl msthco. Tct^l incicii^L :C.LJJ:CEE EMU"! to 129 Mt cf bauxitic matsrial contsin-'-in b:t. ttr. Zl -_~.C 37;. r-i/iilrblE ^lumir.r. D.J. BarnarcD ano G.F.J. The genesis of bauxite duperies on scv^rrl factors.
Recommended publications
  • Mineral Profile

    Mineral Profile

    Platinum September 2009 Definition, mineralogy and Pt Pd Rh Ir Ru Os Au nt Atomic 195.08 106.42 102.91 192.22 101.07 190.23 196.97 deposits weight opme vel Atomic Definition and characteristics 78 46 45 77 44 76 79 de number l Platinum (Pt) is one of a group of six chemical elements ra UK collectively referred to as the platinum-group elements Density ne 21.45 12.02 12.41 22.65 12.45 22.61 19.3 (gcm-3) mi (PGE). The other PGE are palladium (Pd), iridium (Ir), osmium e Melting bl (Os), rhodium (Rh) and ruthenium (Ru). Reference is also 1769 1554 1960 2443 2310 3050 1064 na point (ºC) ai commonly made to platinum-group metals and to platinum- Electrical st group minerals, both often abbreviated to PGM. In this su resistivity r document we use PGM to refer to platinum-group minerals. 9.85 9.93 4.33 4.71 6.8 8.12 2.15 f o (micro-ohm re cm at 0º C) nt Chemically the PGE are all very similar, but their physical Hardness Ce Minerals 4-4.5 4.75 5.5 6.5 6.5 7 2.5-3 properties vary considerably (Table 1). Platinum, iridium (Mohs) and osmium are the densest known metals, being significantly denser than gold. Platinum and palladium are Table 1 Selected properties of the six platinum-group highly resistant to heat and to corrosion, and are soft and elements (PGE) compared with gold (Au). ductile. Rhodium and iridium are more difficult to work, while ruthenium and osmium are hard, brittle and almost pentlandite, or in PGE-bearing accessory minerals (PGM).
  • 6 the Environments Associated with the Proposed Alternative Sites

    6 the Environments Associated with the Proposed Alternative Sites

    6 THE ENVIRONMENTS ASSOCIATED WITH THE PROPOSED ALTERNATIVE SITES The purpose of this section is to describe the environments associated with the proposed alternative sites. The information contained herein was extracted from the relevant specialist studies. Please refer to Section 3.5 for a list of all the relevant specialists and their fields of expertise and to Appendix E for the original specialist reports. 6.1 Brazil Site 6.1.1 Physical (a) Location The Brazil site is situated in the Kleinzee / Nolloth region of the Northern Cape, within the jurisdiction of the Nama-Khoi Municipality ( Figure 16). The site has the following co-ordinates: 29°48’51.40’’S and 17°4’42.21’’E. The Brazil site is situated approximately 500 km north of Cape Town and 100 km west-southwest of Springbok. Kleinzee is located 15 km north, Koiingnaas is 90 km south and Kamieskroon is located 90 km southeast of the Brazil site. Figure 16: Location of the proposed Brazil site in relation to the surrounding areas (Bulman, 2007) Nuclear 1 EIA: Final Scoping Report Eskom Holdings Limited 6-1 Issue 1.0 / July 2008 (b) Topography The topography in the Brazil region is largely flat, with only a gentle slope down to the coast. The coast is composed of both sandy and rocky shores. The topography is characterised by a small fore-dune complex immediately adjacent to the coast with the highest elevation of approximately nine mamsl. Further inland the general elevation depresses to about five mamsl in the middle of the study area and then gradually rises towards the east.
  • Predictability of Pothole Characteristics and Their Spatial Distribution At

    Predictability of Pothole Characteristics and Their Spatial Distribution At

    79_Chitiyo:Template Journal 12/15/08 11:16 AM Page 733 Predictability of pothole characteristics J o and their spatial distribution at u Rustenburg Platinum Mine r n by G. Chitiyo*, J. Schweitzer*, S. de Waal*, P. Lambert*, and a P. Olgilvie* l P a p Synopsis thermo-chemical erosion of the cumulus floor by new influxes of superheated magma best explains the observed data. e Prediction of pothole characteristics is a challenging task, Partial to complete melting of the cumulate floor occurred in r confronting production geologists at the platinum mines of three phases. The first represents the emplacement of hot the Bushveld Complex. The frequency, distribution, size, magma. This magma, due to turbulent flow and high chemical shape, severity and relationship (FDS3R) of potholes has a and physical potential, aggressively attacks the existing floor huge impact on mine planning and scheduling, and (crystal mush on the magma/floor interface). Regional consequently cost. It is with this in mind that this study was erosion is manifested by large, often coalescing potholes. initiated. During the second phase, when the magma emplacement Quantitative analysis of potholes indicates that pothole process ceased and cooling in situ started, two distinct size (area covered) can be described by two partly periods of pothole formation ensued. The first is related to overlapping lognormal distributions. These are referred to as rapid cooling along the relatively steep part of the Newton Populations A (smaller) and B (larger). The range of Cooling Curve, when Population B potholes nucleated observed pothole sizes conforms to a simple double randomly and grew rapidly with concurrent convective exponential growth model based on Newton’s Cooling Curve.
  • A Case Study: Building Resilience in Rangelands Through a Natural Resource Management Model

    A Case Study: Building Resilience in Rangelands Through a Natural Resource Management Model

    A CASE STUDY: BUILDING RESILIENCE IN RANGELANDS THROUGH A NATURAL RESOURCE MANAGEMENT MODEL Ecosystem-based approaches to adaptation: strengthening the evidence and informing policy Halcyone Muller Heidi-Jayne Hawkins Sarshen Scorgie November 2019 Contents Introduction ......................................................................................................................... 4 Materials and methods .................................................................................................... 6 Climate and biophysical characteristics of the study area ............................. 6 Socio-economic characteristics of the study area ............................................. 7 Socio-economic survey .............................................................................................. 7 Biophysical study design ........................................................................................... 7 Statistics .......................................................................................................................... 8 Results .................................................................................................................................. 10 Socio-economic survey ............................................................................................. 10 Biophysical study ......................................................................................................... 11 Discussion .........................................................................................................................
  • ECONOMIC GEOLOGY RESEARCH INSTITUTE HUGH ALLSOPP LABORATORY University of the Witwatersrand Johannesburg

    ECONOMIC GEOLOGY RESEARCH INSTITUTE HUGH ALLSOPP LABORATORY University of the Witwatersrand Johannesburg

    ECONOMIC GEOLOGY RESEARCH INSTITUTE HUGH ALLSOPP LABORATORY University of the Witwatersrand Johannesburg CHROMITITES OF THE BUSHVELD COMPLEX- PROCESS OF FORMATION AND PGE ENRICHMENT J.A. KINNAIRD, F.J. KRUGER, P.A.M. NEX and R.G. CAWTHORN INFORMATION CIRCULAR No. 369 UNIVERSITY OF THE WITWATERSRAND JOHANNESBURG CHROMITITES OF THE BUSHVELD COMPLEX – PROCESSES OF FORMATION AND PGE ENRICHMENT by J. A. KINNAIRD, F. J. KRUGER, P.A. M. NEX AND R.G. CAWTHORN (Department of Geology, School of Geosciences, University of the Witwatersrand, Private Bag 3, P.O. WITS 2050, Johannesburg, South Africa) ECONOMIC GEOLOGY RESEARCH INSTITUTE INFORMATION CIRCULAR No. 369 December, 2002 CHROMITITES OF THE BUSHVELD COMPLEX – PROCESSES OF FORMATION AND PGE ENRICHMENT ABSTRACT The mafic layered suite of the 2.05 Ga old Bushveld Complex hosts a number of substantial PGE-bearing chromitite layers, including the UG2, within the Critical Zone, together with thin chromitite stringers of the platinum-bearing Merensky Reef. Until 1982, only the Merensky Reef was mined for platinum although it has long been known that chromitites also host platinum group minerals. Three groups of chromitites occur: a Lower Group of up to seven major layers hosted in feldspathic pyroxenite; a Middle Group with four layers hosted by feldspathic pyroxenite or norite; and an Upper Group usually of two chromitite packages, hosted in pyroxenite, norite or anorthosite. There is a systematic chemical variation from bottom to top chromitite layers, in terms of Cr : Fe ratios and the abundance and proportion of PGE’s. Although all the chromitites are enriched in PGE’s relative to the host rocks, the Upper Group 2 layer (UG2) shows the highest concentration.
  • Mineral Processing

    Mineral Processing

    Mineral Processing Foundations of theory and practice of minerallurgy 1st English edition JAN DRZYMALA, C. Eng., Ph.D., D.Sc. Member of the Polish Mineral Processing Society Wroclaw University of Technology 2007 Translation: J. Drzymala, A. Swatek Reviewer: A. Luszczkiewicz Published as supplied by the author ©Copyright by Jan Drzymala, Wroclaw 2007 Computer typesetting: Danuta Szyszka Cover design: Danuta Szyszka Cover photo: Sebastian Bożek Oficyna Wydawnicza Politechniki Wrocławskiej Wybrzeze Wyspianskiego 27 50-370 Wroclaw Any part of this publication can be used in any form by any means provided that the usage is acknowledged by the citation: Drzymala, J., Mineral Processing, Foundations of theory and practice of minerallurgy, Oficyna Wydawnicza PWr., 2007, www.ig.pwr.wroc.pl/minproc ISBN 978-83-7493-362-9 Contents Introduction ....................................................................................................................9 Part I Introduction to mineral processing .....................................................................13 1. From the Big Bang to mineral processing................................................................14 1.1. The formation of matter ...................................................................................14 1.2. Elementary particles.........................................................................................16 1.3. Molecules .........................................................................................................18 1.4. Solids................................................................................................................19
  • Explore the Northern Cape Province

    Explore the Northern Cape Province

    Cultural Guiding - Explore The Northern Cape Province When Schalk van Niekerk traded all his possessions for an 83.5 carat stone owned by the Griqua Shepard, Zwartboy, Sir Richard Southey, Colonial Secretary of the Cape, declared with some justification: “This is the rock on which the future of South Africa will be built.” For us, The Star of South Africa, as the gem became known, shines not in the East, but in the Northern Cape. (Tourism Blueprint, 2006) 2 – WildlifeCampus Cultural Guiding Course – Northern Cape Module # 1 - Province Overview Component # 1 - Northern Cape Province Overview Module # 2 - Cultural Overview Component # 1 - Northern Cape Cultural Overview Module # 3 - Historical Overview Component # 1 - Northern Cape Historical Overview Module # 4 - Wildlife and Nature Conservation Overview Component # 1 - Northern Cape Wildlife and Nature Conservation Overview Module # 5 - Namaqualand Component # 1 - Namaqualand Component # 2 - The Hantam Karoo Component # 3 - Towns along the N14 Component # 4 - Richtersveld Component # 5 - The West Coast Module # 5 - Karoo Region Component # 1 - Introduction to the Karoo and N12 towns Component # 2 - Towns along the N1, N9 and N10 Component # 3 - Other Karoo towns Module # 6 - Diamond Region Component # 1 - Kimberley Component # 2 - Battlefields and towns along the N12 Module # 7 - The Green Kalahari Component # 1 – The Green Kalahari Module # 8 - The Kalahari Component # 1 - Kuruman and towns along the N14 South and R31 Northern Cape Province Overview This course material is the copyrighted intellectual property of WildlifeCampus. It may not be copied, distributed or reproduced in any format whatsoever without the express written permission of WildlifeCampus. 3 – WildlifeCampus Cultural Guiding Course – Northern Cape Module 1 - Component 1 Northern Cape Province Overview Introduction Diamonds certainly put the Northern Cape on the map, but it has far more to offer than these shiny stones.
  • Table of Contents

    Table of Contents

    LORMP – Unlocking the Ecotourism Potential of the River, Draft October 2008 4.3.11.2 Sensitivities Despite being on the edge of the Sperrgebiet Restricted Area, proposed as a possible protected area within Namibia’s national conservation estate, the riparian zone’s integrity has been largely transformed through mining, agriculture and settlement, with the degree of transformation ranging from moderate to total. Sensitivities can be expected regarding uncontrolled access to the Sperrgebiet, the various mines along this river section and the farms between Brandkaros and the bridge. These sensitivities need to be addressed if the ecotourism potential along this river section is to be unlocked. Additional aspects that must be included in the planning is the influence of wind, making most of this area difficult for rowing and rafting, exacerbated by the flat gradient resulting in the river meandering over the coastal plan. The lack of a well structured tourism industry along this river section, as a result of ad hoc and individual developments in the past, and the lack of an established brand, since this river section is not in the national park, in the Sperrgebiet, and not on the coast, the area is largely unknown. The lack of benefits to the broader Richtersveld Community should be addressed, in an a manner that is tangible and measurable. The tourism product base should also be assessed and possibly diversified, since the current product base is limited largely to a localized market, and occasionally 4x4 guests en route to the Richtersveld or Namibia via the pont at Sendelingsdrift. Despite the intentions of the Poverty Relief Programme, the infrastructural development support at Sanddrift and Stofbakkies, seems to be experiencing challenges from an occupancy and marketing perspective.
  • Agency for Cultural Resource Management

    Agency for Cultural Resource Management

    Agency for Cultural Resource Management Specialists in Archaeological Studies and Heritage Resource Management No. 5 Stuart Road Rondebosch, 7700 Phone/Fax 021- 685 7589 E-mail: [email protected] Cellular: 082 321 0172 RECOMMENDED EXEMPTION FROMFURTHER ARCHAEOLOGICALSTUDIES: THE PROPOSED NAMAQUA REGIONAL WATER SUPPLY SCHEME BETWEEN HENKRIES AND STEINKOPF, NORTHERN CAPE PROVINCE July 2012 1. OUTLINE OF THE DEVELOPMENT The proposed project entails the replacement of the existing water supply pipeline from Henkries to Steinkopf (Nama Khoi Municipality) in the Namaqualand region of the Northern Cape Province (Figures 1& 2). Henkries is located about 3 kms south of the Orange River, while Steinkopf is located 25 kms north of Springbok, which is about 550 kms north of Cape Town, alongside the N7. A separate application for a new water supply pipeline between Bulletrap and Okiep and between Rooiwinkel and Nababeep has already been subjected to an archaeological impact and scoping assessment (Kaplan 2011a, b).Historically, both Okiep and Nababeep are important towns in the history of copper mining in Namaqualand (Smallberger 1995). The larger project ultimately entails replacing the entire ± 200 km network of water supply pipelines in the region, which extends all the way to Kleinzee on the Richtersveld coast. The existing 200 km long water supply pipeline between Henkries and Kleinzee was installed in 1973 and its condition has deteriorated rapidly since 1992. The pipeline is the main potable water supply pipeline from the Orange River that supplies numerous small towns in the region, including Henkries, Steinkopf, Bulletrap, Nababeep, Okiep, Carolousberg, Concordia, Springbok and Kleinzee. The steel and asbestos pipes have an average age of about 38 years, and most of the distribution pipes are currently in need of urgent repair and replacement as a result of frequent breakages and leakages.
  • Sugilite in Manganese Silicate Rocks from the Hoskins Mine and Woods Mine, New South Wales, Australia

    Sugilite in Manganese Silicate Rocks from the Hoskins Mine and Woods Mine, New South Wales, Australia

    Sugilite in manganese silicate rocks from the Hoskins mine and Woods mine, New South Wales, Australia Y. KAWACHI Geology Department, University of Otago, P.O.Box 56, Dunedin, New Zealand P. M. ASHLEY Department of Geology and Geophysics, University of New England, Armidale, NSW 2351, Australia D. VINCE 1A Ramsay Street, Essendon, Victoria 3040, Australia AND M. GOODWIN P.O.Bo• 314, Lightning Ridge, NSW 2834, Australia Abstract Sugilite relatively rich in manganese has been found at two new localities, the Hoskins and Woods mines in New South Wales, Australia. The occurrences are in manganese-rich silicate rocks of middle to upper greenschist facies (Hoskins mine) and hornblende hornfels facies (Woods mine). Coexisting minerals are members of the namansilite-aegirine and pectolite-serandite series, Mn-rich alkali amphiboles, alkali feldspar, braunite, rhodonite, tephroite, albite, microcline, norrishite, witherite, manganoan calcite, quartz, and several unidentified minerals. Woods mine sugilite is colour-zoned with pale mauve cores and colourless rims, whereas Hoskins mine sugilite is only weakly colour-zoned and pink to mauve. Within single samples, the chemical compositions of sugilite from both localities show wide ranges in A1 contents and less variable ranges of Fe and Mn, similar to trends in sugilite from other localities. The refractive indices and cell dimensions tend to show systematic increases progressing from Al-rich to Fe- Mn-rich. The formation of the sugilite is controlled by the high alkali (especially Li) and manganese contents of the country rock, reflected in the occurrences of coexisting high alkali- and manganese- bearing minerals, and by high fo2 conditions. KEYWORDS: sugilite, manganese silicate rocks, milarite group, New South Wales, Australia Introduction Na2K(Fe 3 +,Mn 3 +,Al)2Li3Sit2030.
  • Ncta Map 2017 V4 Print 11.49 MB

    Ncta Map 2017 V4 Print 11.49 MB

    here. Encounter martial eagles puffed out against the morning excellent opportunities for river rafting and the best wilderness fly- Stargazers, history boffins and soul searchers will all feel welcome Experience the Northern Cape Northern Cape Routes chill, wildebeest snorting plumes of vapour into the freezing air fishing in South Africa, while the entire Richtersveld is a mountain here. Go succulent sleuthing with a botanical guide or hike the TOURISM INFORMATION We invite you to explore one of our spectacular route and the deep bass rumble of a black- maned lion proclaiming its biker’s dream. Soak up the culture and spend a day following Springbok Klipkoppie for a dose of Anglo-Boer War history, explore NORTHERN CAPE TOURISM AUTHORITY Discover the heart of the Northern Cape as you travel experiences or even enjoy a combination of two or more as territory from a high dune. the footsteps of a traditional goat herder and learn about life of the countless shipwrecks along the coast line or visit Namastat, 15 Villiers Street, Kimberley CBD, 8301 Tel: +27 (0) 53 833 1434 · Fax +27 (0) 53 831 2937 along its many routes and discover a myriad of uniquely di- you travel through our province. the nomads. In the villages, the locals will entertain guests with a traditional matjies-hut village. Just get out there and clear your Traveling in the Kalahari is perfect for the adventure-loving family Email: [email protected] verse experiences. Each of the five regions offers interest- storytelling and traditional Nama step dancing upon request. mind! and adrenaline seekers.
  • Download the Scanned

    Download the Scanned

    JOURNAL MINERALOGICAL SOCIETY OF AMERICA 193 Boyle, Blank, Biernbaum, Clay, Frankenfield, Gordon, Oldach, Knabe, and Trudell. At Branchville, albite crystals, beryl, margarodite, spodumene, and cyrnatolite were obtained; at East Hampton, golden beryl; at White Rocks, masses of pink and greenish tourmaline; at Strickland's quarry' green tourmaline, albite, beryl, and spoctumene. Ihe report was illustrated with lantern slides of photographs taken on the trip, and exhibits of specimens. Mr. George Vaux, Jr. described a trip to Franklin, N. J. with Mr. Gordon, where some exceptionally 6ne specimens were obtained, including the following minerals: apatite, copper, rhodonite, datolite, willemite, glaucochroite, Ieuco- phoenicite, hancockite, wernerite, franklinite, and arsenopyrite. Seuurr, G. Goroon, SecretarY, BOOK REVIEW A LIST OF NEW CRYSTAL FORMS OF MINERALS. Hnnstnr P Wurrrocr. Bur,retrn ol Tnr: Auenlcau Museunr ol NATURAT-Ifrsronv, Vor. xrvr, Ant. II, pp.89-278,1[ewYorh,1922. In July 1910, the author published. in The Sthool of Mines Quarterl,L (Vol. 31, No. 4 and VoI. 32, No. 1) a list of new crystal forms which had been recorded in the literature since the appearance of Goldschmidt's Index der Krystallformen der Mineralien (1336_91). The present bulletin includes the former data and extends the compilation to 1920, thus furnishing crystallographers with a most useful reference work covering a period of thirty years (1890-1920). References prior to 1890 being available in Goldschmidt's "Index." Where a new orientation of a species has been proposed and accepted, forms previously cited have been transposed to correspond with the new axial elements In such cases the elements used are given at the head of the species.