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| 480 La Trobe Street Melbourne, Victoria 3000, Australia Nelson Canada 1120 Birchmount Road Scarborough...Formed from Surface Water: 19 The Opals of Australia PART II Gemstones of Igneous-Hydrothermal Origin...Peridot Deposits 9. Diamond Pipes: 129 The Diamond Deposits of Argvle, Western Australia Index 141 FOREWORD...surlace waters, focusing on the opal deposits of Australia. Part II of this book is devoted to those gem...environment two very special gemstones, peridot and diamond, are produced. These rare glimpses of the earth's |
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| 480 La Trobe Street Melbourne, Victoria 3000, Australia Nelson Canada 1120 Birchmount Road Scarborough...Formed from Surface Water: 19 The Opals of Australia PART II Gemstones of Igneous-Hydrothermal Origin...Peridot Deposits 9. Diamond Pipes: 129 The Diamond Deposits of Argvle, Western Australia Index 141 FOREWORD...surlace waters, focusing on the opal deposits of Australia. Part II of this book is devoted to those gem...environment two very special gemstones, peridot and diamond, are produced. These rare glimpses of the earth's |
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| maps produced by the Geological Survey of Western Australia are available from: Information Centre Department...Department of Mines and Petroleum 100 Plain Street East Perth WA 6004 Phone: (08) 9222 3459 Fax: (08) 9222...Bulletin 25 GEMSTONES OF WESTERN AUSTRALIA Gemstones of Western Australia second edition While systematically...authoritative, the second edition of Gemstones of Western Australia is written not only for the professional geologist...et al. The second edition of Gemstones of Western Australia is an updated version published in response |
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| Stocklmayer GEOLOGICAL SURVEY OF WESTERN AUSTRALIA Gemstones of Western Australia FRONTISPIECE Euhedral black... MINERAL RESOURCES BULLETIN 25 GEMSTONES OF WESTERN AUSTRALIA by J Michael Fetherston, Susan M Stocklmayer...Stocklmayer Perth 2013 GEOLOGICAL SURVEY OF WESTERN AUSTRALIA MINISTER FOR MINES AND PETROLEUM Hon. Norman...EXECUTIVE DIRECTOR, GEOLOGICAL SURVEY OF WESTERN AUSTRALIA Rick Rogerson REFERENCE The recommended reference...VC 2013, Gemstones of Western Australia: Geological Survey of Western Australia, Mineral Resources Bulletin |
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| Emeritus Professor of Geology University of Western Australia in recognition of his pioneering studies of...stem from the recognition of diamond-bearing lamproites in Western Australia and the reclassification of...of several anomalous diamond-bearing kimberlites as lamproites. Consequently lamproites, previously of...igneous petrology, have become prime targets for diamond exploration on a worldwide basis. Contemporaneously...for geologists concerned with exploration for diamond, and petrologists and geochemists interested in |
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| Top 6 7 1 Top Bottom Bottom 3 4 5 1 DIAMOND DEPOSITS Origin, Exploration, and History of Discovery...SME diamond_title2 9/3/02 9:29 AM Page 1 DIAMOND DEPOSITS Origin, Exploration, and History of Discovery...CHAPTER 1 HISTORY OF DIAMOND DISCOVERIES 1 Introduction 3 History of Diamond Discoveries References...References 29 CHAPTER 2 DIAMOND MORPHOLOGY 3 3 33 General Properties and Internal Structure Crystal Habit...Habit 37 Varieties of Diamond 38 Dissolution Phenomena 44 References 46 CHAPTER 3 AGE AND ORIGIN OF DIAMONDS: |
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| “graining” in green-yellow diamond • Irradiated blue diamond • Large type IIa diamond from Arkansas, USA •...purplish pink Montana sapphire • Largest CVD-grown diamond submitted to GIA laboratory • Unusual absorption...• Inclusions in Kenyan rubies from the John Saul mine • Lazurite in Mogok ruby • Snowflakes in Mong Hsu... 534 Diamonds from the Deep Determination of diamond ages offers a look at continent evolution over...Karl Schmetzer San Diego, California Canberra, Australia Petershausen, Germany Edward W. Boehm A.J.A |
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| temporary color change • Unusually large novelty-cut diamond • Small synthetic diamonds • Diaspore “vein” in...Africa • Opal triplet resembling an eye • Green orthoclase feldspar from Vietnam • New discoveries of painite...sapphire imitation • Barium-rich glass sold as diamond rough • “Color-change” glass update • Conference...Akamatsu Tokyo, Japan A. J. A. (Bram) Janse Perth, Australia George Rossman Pasadena, California Alan T....Akamatsu Tokyo, Japan A. J. A. (Bram) Janse Perth, Australia George Rossman Pasadena, California Alan T. |
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| + 4, Mineral Fe # — of Australia and™ Papua New Guinea ...O02unse Geology of the Mineral Deposits of Australia and Papua New Guinea The COVER PHOTOGRAPH shows...the remnant ovoid Pleistocene Luise Volcano on the east coast of Lihir Island, New Ireland Province, Papua...Economic Geology of Australia Guinea — 1. Metals 6.* Economic Geology of Australia Guinea — 2. Coal 7...Economic Geology of Australia Guinea — 3. Petroleum 8.* Economic Geology of Australia Guinea — 4. Industrial |
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| stones): (1) 2 5 . 4 3 ~ 1aquamarine, Santa Maria mine, Brazil; (2) 20.10-ct peridot, Burma; (3) 21.09-ct...Kenya; (5) 16.28-ct rubellit8 tourmaline, Queen Mine, Pala, California; (6) 15.18-ct tourmaline, Paraiba...Kashmir, India; (1516.14-ct fancy intense yellow diamond; (16) 6.38-ct ruby, Burma; (17) 3.08ct tourmaline...85-ct fancy purple-pink diamond, Argyle diamond m i n e , Western Australia; (19) 5.05-ct D-color, internally...internally flawless diamond. Stones 1, 2, and 5 are courtesy of William F. Larson; 3 and 11 are courtesy |
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| dirty-brown colour and sometimes fractured. In the North-Western region, corundum is Introduction found in Tertiary...NorthKenya and Tanzania, in addition to the many western region of Kenya. This is in the Turkana unusual...the location of the star sapphires in the North-western region of Kenya. The mining area, dashed area in...others include amethyst, citrine, aquamarine, diamond, sodalite and ruby). Actually it is the transfer...south of Campo Formoso, covers an area at the western border of the north-south extending mountains of |
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| tourmaline crystals from William Larson’s Stuart Mine in the Pala Mountains, California (USA). Next to...and medicine The beauty of the phenomenon gems Diamond: king of gemstones Corundum: the colorful palette...however, be attributable to Above: The octahedral diamond crystal sits on an ultramafic garnet-lherzolite...quartz from the hydrothermal deposits of the Muzo Mine, Colombia. Collection: Mineralogical Institute of...Hawaii), sapphires in Australia, Cambodia, Thailand, and Vietnam 14 Glowing red Diamond-bearing volcanic pipes |
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| formation. 223 Blue Sapphires from the Baw Mar Mine in Mogok Hpone-Phyo Kan-Nyunt, Stefanos Karampelas...Notes Black diamond with unusual color origin • Silicon in natural type IIa and type IaB diamond • Stellate...in vivid pink morganite • Spinel submitted as diamond • Large synthetic moissanite with silicon carbide...Abduriyim Tokyo, Japan A.J.A. (Bram) Janse Perth, Australia George R. Rossman Pasadena, California Shigeru...of the geology of diamonds. The cover image, of diamond crystal in kimberlite matrix, was chosen to highlight |
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| MONOGRAPH 17 of Somepats oe ilar ce| + in Australia mail iii DOOO38J0754 oA., eet OF ROME prhge...IMPORTANT MINERAL DEPOSITS IN AUSTRALIA Cover Picture—The Argyle Diamond mine Photo by courtesy of Ashton...DISCOVERY OF SOME IMPORTANT MINERAL DEPOSITS IN AUSTRALIA Editors K. R. GLASSON J. H. RATTIGAN INCORPORATED...House, 191 Royal Parade, Parkville, Victoria, Australia 3052 1990 © Copyright By THE AUSTRALASIAN ...any of its publications | National Library of Australia Card No. ISBN 6 949106 57 7 Typeset by Abb-typesetting |
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| from Brazil has an iridescent chatoyancy Grey orthoclase moonstone from Sri Lanka has a unique combination...strong cat's-eye caused by an albite-oligoclase orthoclase perthite. Four-rayed star tourmaline (bicolour...scraped from the girdle; the results indicate orthoclase feldspar, which confirms its identity as a moonstone...values, the feldspar could be orthoclase, perthite (albite - oligoclase orthoclase intergrowths) or peristerite...the stones to be perthite with more albite than orthoclase. abundant 'trichites', most of which are oriented |
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| Geological-mineralogical system of searching for diamond deposits...1 A kimberlitic lamprophyre and associated...Pakistan.4 Reasons of variations of individual diamond crystals and petrogenetic blocking of rocks in...experimental study on growth and resorption of diamond in kimberlite melt.8 Melting experiments on the....28 Experimental study of fluid conditions of diamond growth...................31 Comprehensive study...source material.32 Composition of garnets with diamond inclusions from Krasnopresnenskaya kimberlite pipe |
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| TR ClI- 27 THE ALLUVIAL DIAMOND DEPOSITS OF THE LOWER VAAL RIVER BETWEEN BARKLY WEST AND THE VAAL-HARTS...Grahamstown DECEMBER 1990 ABSTRACT The between diamond deposits along the Vaal River, alluvial Barkly...at most of these mineral s are locally derived. Diamond grade variations within the Younger Gravels are...Alluvial the tectonic the by channel width and diamond exploration setting, the palaeo- stability...South Africa in Johannesburg for providing the diamond production data. All my friends of the K.Sc. course |
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| basalt fields: a comparative study of Barrington, Australia, and West Pailin, Cambodia, gemfields F.L. Sutherland1...Geodiversity Research Group, Australian Museum, Sydney, Australia 2. Giibelin Gemmological Laboratory, Lucerne,...Caterham, Surrey, U.K. ABSTRACT: Barrington, Australia, and West Pailin, Cambodia, basalt fields yield... Barrington (Australia), Pailin (Cambodia) Introduction Fast Australia and South East Asia exploit rich...industries (Mumme, 1988; Hughes, 1990, 1997). East Australia produces sapphire and rare ruby (Coldham, 1985; |
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| French Blue and the Hope Gray-to-Blue-to-Violet Argyle Diamonds VOLUME 45 NO. 1 Hackmanite THE QUARTERLY...recently discovered lead cast of the French Blue diamond reveals important details about this fabled gem...Gray-to-Blue-to-Violet Hydrogen-Rich Diamonds from The Argyle Mine, Australia Carolyn H. van der Bogert, Christopher...McClure Famed for its pink and “champagne” diamonds, Argyle is the only known source of the rare type IaB hydrogen-rich...assemblages in diamond etch channels • Clarity grading radiation stains • Rare mixed type (Ia/IIb) diamond with |
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| The author in the shaft of the Consorsio Emerald Mine, La Pita Complex, Boyaca, Colombia. Photo: Ron Ringsrud...... 7 The Middle Ages: Sh ifting Values ... 9 Diamond: the Invincible ... 9 Chapter 2 Preciousness Redefined:...Pattni took me under their wing on my first trip to East Africa. The late great Campbell Bridges, who took...and hosted my wife and me on our second trip to East Africa. Thanks to David Stanley Epstein author of...preciousness may have originated in the ancient East and worked its way slowly westward. In the ancient |
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| VOLUME XLII WINTER 2006 Impact of Graining on Diamond Clarity Grading . . . “Chocolate Pearls”. . . Leopard...large Fancy white diamond with whitish banding • Prolonged change of color in a pink diamond • Strand of natural...News International Diamond trading in Sierra Leone • Jewelry repair damages a diamond • Green augelite...United Kingdom A. J. A. (Bram) Janse Perth, Australia Thomas M. Moses New York, New York SUBSCRIPTIONS...on the first formal grading of the famed Hope diamond. Born in Colorado Springs, Colorado, Bob Crowningshield |
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| locality of origin. pg. 116 120 The Cullinan Diamond Centennial: A History and Gemological Analysis...previously undocumented details about the largest gem diamond ever found, as well as two of the famous diamonds...Rhodonite from Broken Hill, New South Wales, Australia Paul W. Millsteed Presents a technique for faceting...radiation stains • Diamond with intense graining • Coated pink diamonds • Diamond with unusual etch channel...channel • Diamond with sapphire inclusions • Imitation Melo “pearls” • Moonstone imitations 169 Gem |
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| USA 107 Barry Street, Carlton Victoria 3053, Australia DISTRIBUTORS USA and Canada Blackwell Scientific...Palo Alto California 94303 Australia Blackwell Scientific Publications (Australia) Pty Ltd 107 Barry Street...NIELSEN,T. F. D. Tertiary alkaline magmatism in East Greenland: a review 489 DOWNES, H. Tertiary and...some of the classic alkaline provinces, such as East Africa, southern Greenland and the Kola Peninsula...knowledge of the tectonic and volcanic evolution of the East African Rift. An obituary and appreciation of his |
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| FEATURES 130 Gem Trade Lab Notes • “Banded” twinned diamond crystal • Diamonds with unusual inclusions • Feldspar...cut • Canadian diamonds • PDAC conference • A diamond table with trigons • “Burmite” • Cat’s-eye amethyst...pyrochlore inclusions • Vortex (Yogo Gulch) sapphire mine update • “Canary” tourmaline from Malawi • Bismuth-bearing...• “Jurassic Bugs” amber imitation • Assembled diamond imitations from Brazil • Enamel-backed quartz as...Zabargad, cubic zirconia, and the detection of diamond simulants—are just as solid and useful as they |
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| manganese also has dozens of nonmetallic uses. The diamond is both a gem and an industrial mineral. Then there...come not merely from one district but from a single mine. Thus the physical properties of many rocks and...their point of use. At the other is the industrial diamond, with a unit value such that its occurrence in...eclipsing the mineral magnesite in some areas; the trona mine rather than the Solvay plant is now the main source...Mexico to Canada, South Africa to Jordan, and Australia to Sri Lanka. Industrial Minerals also sponsors |
