 | | Journal (article/letter/editorial) | | pose a unique challenge for resource modelling and mine planning due to the extreme lateral variability...ore unit within a lateritic bauxite deposit in Australia. Cross-validation was used to assess the performance... Comparison of the estimates against the actual mine floor indicates that the inclusion of ancillary...ground-penetrating radar, laterite, bauxite, ironstone, Weipa. INTRODUCTION Due to high-drilling costs, exploration...WA 6433, Australia. 2 School of Mechanical and Mining Engineering, The University of Queensland, Frank |  | | Journal (article/letter/editorial) | | Genesis of pisoliths and of the Weipa Bauxite deposit, northern Australia G. TAYLOR1* AND R. A. EGGLETON2...EGGLETON2 1 2 University of Canberra, ACT 2617, Australia. Cooperative Research Centre for Landscape Environments...Sciences, Australian National University, ACT 0200, Australia. Consideration of the Late Cretaceous and Cenozoic...the Cretaceous rocks. This continued until the Weipa Plateau was isolated by river capture and incision...inset into the weathered Cretaceous rocks. The Weipa bauxite deposit has similarities to other northern |  | | Journal (article/letter/editorial) | | (S3āS16) Landscapes and regolith of Weipa, northern Australia G. TAYLOR1*, R. A. EGGLETON2, L. D. FOSTER2...MORGAN3 1 University of Canberra, ACT 2617, Australia. Cooperative Research Centre for Landscape Environments...University, ACT 0200, Australia. 3 48 Rinora Street, Corinda, Qld 4075, Australia. 2 Since its discovery...discovery during the 1950s the Weipa bauxite has been considered to be the product of in situ weathering of...research and outlines the geological setting of the Weipa Bauxite, and provides some evidence for alternative |  | | Journal (article/letter/editorial) | | National University, GPO Box 4, Canberra, ACT 260 1, Australia 2C.S.I.R.0., Division of Exploration Geoscience...Geoscience, P.O. Box 136, North Ryde, NSW 2 113. Australia (Received May 3, 1988; accepted in revisedform March...of gibbsite from the mid-Tertiary Weipa bauxite in north Queensland indicates equilibrium with waters...composition of other surftcial minerals such as kaolinite (LAWRENCEand TAYLOR, 197 1, 1972) and goethite...minerals that contain no interlayer water, such as kaolinite, LAWRENCE (1970) concluded that gibbsite is likely |  | | Journal (article/letter/editorial) | | University of Western Australia, Nedlands, Western Australia, 6907, Australia Graham S. Walkerb) CSIRO...Minerals, P.O. Box 90 Bentley, Western Australia, 6102, Australia (Received 18 July 1997; accepted 9 September...Minerals, P.O. Box 90 Bentley, Western Australia, 6102, Australia. * Author to whom all correspondence...lateritic bauxites from Weipa, Northern Queensland and Darling Range, Western Australia. 0885-7156/98/13(3)/136/8/$6...operations on the Darling Range in Western Australia by Alcoa of Australia Limited. The term bauxite has been |  | | Journal (article/letter/editorial) | | Springer-Verlag 1971 Genesis of the Weipa Bauxite Deposits, N. E. Australia P. L . C . GRUBB Institute of Mining...both in vertical profile and bulk sized samples at Weipa are similar in broad outline, but show significant...lithological relationships of the Weipa bauxite. Die Bauxite yon Weipa sind sowohl im senkrechten Profil... wie auch die lithologische Verwandtschaft der Weipa-Bauxite erkl~ren. Introduction For several reasons...situated at Weipa on the western flank of the Cape Y o r k Peninsula, northern Queensland. The region |  | | Journal (article/letter/editorial) | | THE MINERALOGY OF THE BAUXITE DEPOSITS NEAR WEIPA, QUEENSLAND F. C. LoucuNANANDP. Bavrrss, UnhersityoJNew...(maximum depth 19 feet), weipa (36 feet) and Pera Head (42 feet) and bore cones from Weipa and Pera Head were...yielded similar results. The channel samplesat Weipa and Pera Head extended to sealevel' MrNonar,ocv...the dehydroxylation of gibbsite, boehmite and kaolinite. It is estimated 2Q9 2to F. C LOUGHNAN AND... F-rc. 1. Geological sketch map of the Weipa Area, Queensland. o* l ā¬ c e F i:Fsiiā¬pFl'eā¬ .= I o |  | | Journal (article/letter/editorial) | | No.2, 181-191, 1999. SURFACE LAYER TYPES OF KAOLINITE: A HIGH-RESOLUTION TRANSMISSION ELECTRON MICROSCOPE...Australian National University, Canberra, ACT 0200, Australia Abstract-High-resolution transmission electron...types of surface layers may exist in natural kaolinite crystals. Type 1 has the expected 7-A surface...beidellite-like) layer as the surface layer on one side of a kaolinite particle (i.e., the layer sequence is TOTOTO ...adjacent 7-A layer is not expandable. Type 3 kaolinite has one or several IO-A collapsed smectite-like |  | | Journal (article/letter/editorial) | | Victoria 3168 , Australia Abstract-"Fe Mossbauer spectra of a cleaned Weipa, Australia, kaolin showed...probably of secondary origin. Key Words-Iron, Kaolinite, Mossbauer effect, Paramagnetism, Structural substitution...ofthe iron mineralogy of the Weipa bauxite (Cape York Peninsula, Australia) and the clays underlying it...arising from paramagnetic structural iron in the Weipa and other commercial kaolins. We believe this to...WITH KAOLIN The partial substitution of AI in kaolinite by Fe has been the subject of numerous studies |  | | Journal (article/letter/editorial) | | Physics, Monash University Clayton, Victoria 3168, Australia Abstract- 57 Fe Mossbauer spectra have been used...cleaning processes on the iron mineralogy of a Weipa, Australia, kaolin. A magnetically separated fraction...to be more efficient at removing Fe from the kaolinite surface than dithionite bleach. The Mossbauer...paper industry. Application of these techniques to Weipa kaolins is currently under investigation by Comalco...and surface Fe in a kaolin from Weipa, Cape York Peninsula, Australia. In this paper the effects on the |  | | Journal (article/letter/editorial) | | TOHDITE (5A1 2 0 3'H2 0) IN BAUXITES FROM NORTHERN AUSTRALIA Key Words-Akdalaite, Bauxite, Pisoliths, Poorly...variable minor quartz (Si0 2 ) , hematite (Fe20), kaolinite (Al 2 Si 2 0s(OH)4) and anatase (Ti0 2 ). Diaspore...some bauxitic pisoliths at Weipa, Cape York Peninsular, in northern Australia. using a Siemens DSOl X-ray...EXPERIMENTAL METHODS The bulk ofpisoliths from Weipa are somewhat porous and soft enough to powder from...pisolith. Phase Gibbsite Boehmite Quartz Hematite Kaolinite Anatase PDM Total Wei&ht % excluding PDM 31 |  | | Journal (article/letter/editorial) | | Clay Minerals, Vol. 41, No. 6, 707-717, 1993. KAOLINITE" N M F INTERCALATES PHILIPPA J. R. UWlNS, 1 IAN...Microanalysis, The University of Queensland St. Lucia QLD 4072, Australia 2 Research School of Chemistry...2601, Australia Abstract--Bulk and size-fractionated kaolinites from seven localities in Australia as well...been determined using XRD. Intercalate yields of kaolinite : NMF are consistently low for bulk samples that...yield of kaolinite : NMF intercalate. Key Words:--Defect distribution, Intercalates, Kaolinite, N-methyl |  | | Journal (article/letter/editorial) | | Chemistry, Queensland University of Technology, 2 George Street, GPO Box 2434, Brisbane Queensland 4001, Australia...Australia Abstract-Kaolinites with varying degrees of defect structures have been studied by both mid-infrared...2750-cm-1 region. This region coincides with the kaolinite-deuterated hydroxyl stretching region, SummatIOn...corresponding to the 4 IR active and the 1 Raman active kaolinite hydroxyl stretching frequencies, Combination bands...hand. For example IES is suitable for studying kaolinite dehydroxylation and thermal changes in kaolinites |  | | Journal (article/letter/editorial) | | Clay Minerals, Vol. 41, No. 5, 613~523, [993. KAOLINITE PARTICLE SIZES IN THE <2 pM RANGE USING LASER...Microanalysis, The University of Queensland St. Lucia QLD 4072 Australia Al~tract--The Clay Minerals Society... and crystallinity vary considerablyfor each kaolinite. Replicate analyses of separated size fractions...Jackson (1947) is reproducible for different kaolinite types and that the calculated size ranges are...technique for clay particle sizing. Key Words--Kaolinite, Laser scattering, Particle size. INTRODUCTION |  | | Journal (article/letter/editorial) | | Fontainebleau, France; bRio Tinto Alcan, Brisbane, Australia ABSTRACT ARTICLE HISTORY The precise prediction...of the bauxitisation process (or conversion of kaolinite to the bauxite minerals, i.e. gibbsite, boehmite)...variability of the bauxite footwall contact at Weipa, Australia: (1) regional, (2) local and (3) detailed...assessment; ferricrete; conditional simulation Weipa. In the ļ¬rst step, top elevation samples (main variable)...simulation to determine the optimum drillhole spacing at Weipa, and they concluded that the distribution of Al2 |  | | Journal (article/letter/editorial) | | including the non-consolidated pisolitic bauxite (Weipa) and the intensely lithified types (Gove, Sangaredi...typically produce 1ā15 Mt of bauxite a year over a mine life of 20ā40 years (Bardossy and Aleva, 1990)....2005ā2013 at the mining operations and projects in Australia, Africa, South America, and the Middle East and...from nonconsolidated pisolitic mineralisation (Weipa) to intensely lithified bauxite beds (Gove, Sangaredi)... WA 6010, Australia Centre for Exploration Targeting, The University of Western Australia, 35 Stirling |  | | Journal (article/letter/editorial) | | National University, GPO Box 4, Canberra, ACT 260 1, Australia (ReceivedJune 20, 1988; acceptedin revisedformSeptember20... with the exception of samples from northern Australia (north of approximately 20āS), which have anomalously...low values because meteoric waters in northern Australia are largely derived from monsoonal min. The high...the isotopic composition of meteoric waters in Australia since the mid-Tertiary. Pre-mid Tertiary clays...periods, perhaps early or mid Mesozoic, when Australia was at high latitude and the Australian climate |  | | Journal (article/letter/editorial) | | A CHEMICAL MODEL FOR THE ORIGIN GIBBSITE FROM KAOLINITE ]970 OF LBoNeno Rosnnr G.nnoNnn,Department...construct theoretical solubility diagrams for quartz, kaolinite, and gibbsite at room temperature and pressure...precipitate as a resuit of the dissolution of kaolinite unless quartz is absent from the system, the pH...solubility diagrams lor qtartz, gibbsite, and kaolinite which have been calculated on the basisof thermodynamic...gibbsiteshould not form as a result of the dissolution of kaolinite unless qlrartz is absent, the pH of the infiltrating |  | | Journal (article/letter/editorial) | | Low Iron Bauxite,NortheasternCapeYork, Queensland, Australia A. II. WIIiTE Abstract Several small depositsof...remote northeast tip of Cape York Peninsula, Queensland, Australia. The low iron bauxite occurs in the low...leaching iron oxides posits on Cape York are the Weipa depositsthat from bauxite has .been noted in Ghana...hasdescribed the removalof iron in clays per annum. The Weipa bauxites,on the west coast in peatswampsin Hawaii...grade, containingan averageof 55.0 bauxitefoundin Australia. Not only are depositsof percent Al2Oa and 7.0 |  | | Report (issue) | | 14 1. 2. 3. 4. 5. Asbestos ore Lead ore-Balmat Mine, N. Y. Chromite-chromium ore, Wash. Zinc ore-Friedensville.......................................... B121 Australia ....................................... 121 Fiji...................... 25. Bauxite districts in Australia ................................................Summary of estimates of bauxite resources in Australia ................................................major world bauxite resources are in Africa, Australia, South America, and the Caribbean region; significant |  | | Book | | John Wiley & Sons Australia, Ltd, 33 Park Road, Milton, Queensland 4064, Australia John Wiley & Sons...and that the majority of our work has been in Australia. We had the view that perhaps our experience being...traditional Northern Hemisphere ideas and concepts. In Australia our geological and geomorphological science has...challenged as research has led to new understandings. Australia, while not unique, is a continent that experienced...book may show and hope that the work sourced in Australia will serve to open othersā minds as they pursue |  | | Journal (article/letter/editorial) | | http://www.tandfonline.com/loi/taje20 Dickiteā and kaoliniteābearing sandstones and conglomerates in Illawarra...Loughnan & F. I. Roberts (1986) Dickiteā and kaoliniteābearing sandstones and conglomerates in Illawarra...Earth Sciences (1986) 33, 325-332 Dickite- and kaolinite-bearing sandstones and conglomerates in Illawarra...Geology, University of NSW, Kensington, NSW 2033, Australia. The recent discovery of dickite, intimately associated...associated with ordered and disordered kaolinite, in quartzose sandstones and conglomerates of the Illawarra |  | | Report (issue) | | ............................................. 6 Mine ..................................................(FeO(OH)), hematite (Fe2O3), the clay mineral kaolinite, and a minor amount of anatase (TiO2). The formation...example of a lateritic bauxite deposit is Weipa in Queensland, Australia (fig. 1, point 1; Anand and others...Major world bauxite resources occur in Africa, Australia, South America, and the Caribbean (fig. 1). Guinea...(Mosier, 1986b). The Adoom mine in the Weipa bauxite deposit of Queensland, Australia, reports an estimated |  | | Journal (article/letter/editorial) | | from 31 samples,representativeof deposits of kaolinite (weathered and hydrothermal), flint clay, halloysite...Fithian Shale (18.5 pg), from halloysiteat the Dragon mine (2.83 pg), and from the PennsylvanianDrywood Underclay...The Croweburg Underclay contains the minerals kaolinite, illite, smectite, quartz, and alunite in decreasingamount...in the underclay. Halloysite,as from the Dragon mine, is commonly formed in a sulfuric acid environment...distilled-water blank) except in the bauxite from Weipa, Australia. Because borosilicate glassware was used to |  | Bird, Michael I., Longstaffe, Frederick J., Fyfe, William S., Tazaki, Kazue, Chivas, Allan R. (1994) Oxygen-isotope fractionation in gibbsite: Synthesis experiments versus natural samples. Geochimica et Cosmochimica Acta, 58 (23) 5267-5277 doi:10.1016/0016-7037(94)90310-7 | Journal (article/letter/editorial) | | Australian National University, Canberra, A.C.T. 0200, Australia āDepartment of Earth Sciences, University of Western...to obtain the 6 ā0 value of both gibbsite and kaolinite. These data, plus previously published results...comparison with the 6ā*0 value of associated kaolinite, and (2) by comparison with the 6 ā0 value of...signature by inheritance during the desilication of kaolinite, or from exchange with oxygen-bearing anions such...information on bauxite formation. southwestern Australia (BALL and GILKES, 1985 ), as well as from the |
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