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| 2014 Figure 2. Split pair of boulder opal from Quilpie, Queensland. Specimen is 4.5 × 3.5 cm. Museum Victoria...MINERALS Figure 3. Opal pseudomorph after gastropod from Coober Pedy, South Australia. Specimen is 1.5...photo. Figure 4. Example of superb precious black opal from Lightning Ridge, New South Wales. D. Barnes...South Wales Mineral Resources, photo. Australian Opal Resources Outback Spectral Fire Downloaded by [UQ...Gem Resources Australia Pty. Ltd. PO Box 300 Ourimbah, New South Wales 2258 Australia specover@bigpond |
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| Pty. Ltd. 26 Harries Road, Coorparoo, Qld. 4151 Australia © Copyright Len Cram 1994 © Photography and text...Opals, , tiful Lightning Ridge, Beautiful Queensland Opals, and Beautiful Opals of the Desert “ISBN...Black Opal. Contents Introduction 5 Opal History 7 Australian Opals 13 Australian Opal Geology...What is Opal? On the Trail 15 17 19 Let’s Go Hunting For Opal! 23 New South Wales Opal Fields Lightning...South Australian Opal Fields Coober Pedy Mintabie Andamooka 41 53 57 59 Queensland Opal Fields 61 |
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| coronet of agate and topaz, Bert Scheps, F.G.A.A. for opal and carnelian jewellery, Harry Pearce for the clock...Miss G. Cook, The Australian Gemmologist and Queensland Mining Journal. Other kind folk helped us with...Printing Co Ltd, Tokyo. National Library of Australia Cataloguing in Publication data Perry, Nance Australian...colourbook series). ISBN 0 589 07012 6. I. Gems - Australia - Identification. I. Perry, Ron.joint author....Gemstones in Alphabetical Order Origin of Coiour - Opal 11 14 - 101 50 Tests for Identification 106 |
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| nature which was later to include our beautiful opal. Though Len never finished his formal education...Ridge, I spent quite a lot of time with Len in his opal research laboratory. I quickly learned that he was...amorphous silica science, that scientists from Australia and around the world continue to make contact...especially the many complex forms of the Queensland Boulder Opal. He has been £nvolved in every aspect of...pictorial. Gan Bruce Beautiful Australian Opals opal possesses a fascination no other gemstone has. Everything |
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| Australian Museum, North Terrace, Adelaide, SA 5000, Australia; Neville.Curtis@flinders.edu.au College of Science... Flinders University, Bedford Park, SA 5042, Australia Correspondence: Jason.Gascooke@flinders.edu.au...was undertaken to characterise opal-AG, opalAN (hyalite), opal-CT and opal-C, focussing on the Si-O fingerprint...spectroscopy shows that the three major IR bands of opal are split into transverse optical (TO) and longitudinal...non-destructive delineation of play of colour opals into opal-AG or opal-CT gems. We find that there are no special |
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| 133 An isotopic study of surficial alunite in Australia 2. Potassium-argon MICHAEL I. BIRD, ALLAN geochronology...MCDOUGALL University, Canberra, A.C.T. 2601 (Australia) (Received June 28,1989; revised and accepted...(Isot. Geosci. Sect.), 80: 133-145. alunite in Australia, 2. Potassium- The potential for dating weathering...weathering and diagenetic events in Australia by the K/Ar dating of alunite-group minerals is assessed....Western Australia. Dates from alunite in the South Australian opal fields indicate precious opal formation |
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| ' • t IN COLO~ · AUSTRALIAN OPALS IN COLOUR Opal can be fairly stated to be Australia's national...reader through all the Australian opal fields, describes the types of opal 111ining, the lives of the miners...Andamooka, and on the Queensland opal fields. It also covers the scientific nature of opal and describes how...superb colour plates it display Australian opals and opal jewellery in al I their beauty: gives glin1pses...lapidary working of these precious getns. Every proud opal owner will want this book and all who read the book |
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| Aitkens • .' ... INTRODUCTION' * "' • ■ ' •• The opal, long in disfavor "because it was considered "unlucky...years. For variety and beauty of color the precious opal:*is without a peer. These colors do not come from...DESCRIPTION AND PROPERTIES Unlike mos"t gem stones, the opal is not crystalline. .It is a solidi fied jelly consisting...together with a certain amount of water. In precious opal the water content ranges from 6 to 10 per cent....compounds, as. well-as bitumens, are present. • • Opal is somewhat soft, the hardness ranging from 5-J- |
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| Geoscience Journal of the Geological Society of Australia Publication details, including instructions for...tandfonline.com/loi/taje20 Towards a predictive model for opal exploration using a spatio-temporal data mining...Geosciences , The University of Sydney , NSW , 2006 , Australia Published online: 30 Apr 2013. To cite this article:...D. Müller (2013) Towards a predictive model for opal exploration using a spatio-temporal data mining...Geoscience Journal of the Geological Society of Australia, 60:2, 217-229, DOI: 10.1080/08120099.2012.754793 |
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| revise) © 1976, 1985, 1992 Reader’s Digest (Australia) Pty Limited © 1992 Reader’s Digest (New Zealand)...& Geophysics. Published by Reader’s Digest (Australia) Pty Limited 26-32 Waterloo Street, Surry Hills...identification Prospecting for gold Gemstone areas of Australia The collector's gear Polishing and cutting Fossicking...are exceptions to these two categories— precious opal, turquoise and jade are regarded as true gem minerals...minerals are widely distributed over the surface of Australia, but some areas, because of different geological |
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| for all the family. Australia is renowned for the world's finest Opal. But opal is not the only gemstone...masterpiece in itself. 1 OPALS "And lo! the beautiful opal That rare and wondrous gem Where the Moon and Sun...Wilcox In the first century A.O. Pliny wrote of the Opal, ". . . For in them you shall see the living fire...gems. Queen Victoria so loved the Australian Opal and made Opal popular by presenting one to each of her...mysterious "life", the Opal has been subjected to superstition and myth . Opal was said to ward off diseases |
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| : '. . ' ~ L . ..... Australia is renowned for the world's finest Opal. But opal is not the . ,. . . ...masterpiece in itself. 1 OPALS "And lo! the beautiful opal That rare and wondrous gem Where the Moon and...Wilcox in the first century A.D. Pliny wrote of the Opal, "... For in them you shall see the living fire...gems. Queen Victoria so loved the Australian Opal and made Opal popular by presenting one to each of her...mysterious "life", the Opal has been subjected to superstition and myth . Opal was said to ward off diseases |
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| Letters FEATURE ARTICLES 4 16 p. 11 Queensland Boulder Opal Richard W . Wise Update on Diffusion-Treated...Suggestions for Authors ABOUT THE COVER: Australia is the world leader in opal production. Some of the most attractive...state of Queensland. The article by Richard Wise in this issue provides on overview of Queensland boulder...boulder opal, with specific information from an active operation, the Cragg mine. The oplrls illustrated here-shown...here-shown on a classic opal-bearing Queensland boulder-all have some of the ironstone matrix as a backing |
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| Contents 4 Map: Notable Opal Localities 50 BY BRUCE PAUL GABER 6 The Opal Enigma: Science, History...and Pins Afire: Play of Color in Opal BY MAX WEIBEL Sparkling Opal in Ancient Bones: Precious Relics...vibrant with opal pattern and color. In this extreme close-up of a Lightning Ridge black opal, the field...approximately 3 mm wide. Opal courtesy Jenni Brammall BY ALEX RITCHIE 52 An Opal Glossary of Terms BY...BY SI AND ANN FRAZIER BY PETER HUBER 64 Opal from Mexico: Unsurpassed Fire BY JURGEN SCHUTZ 18 Perfect |
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| Geoscience Journal of the Geological Society of Australia Publication details, including instructions for...com/loi/taje20 Remarks on the age of precious opal in central Australia: reply to comment by Bruce Dickson P....The University of Sydney, – Sydney, 2006, NSW, Australia Published online: 17 Feb 2014. To cite this article:...(2013) Remarks on the age of precious opal in central Australia: reply to comment by Bruce Dickson, Australian...Geoscience Journal of the Geological Society of Australia, 60:8, 835-838, DOI: 10.1080/08120099.2013.870229 |
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| many excellent illustrations. T H E OPAL FORMATIONS OF AUSTRALIA. By ROBEKTM. M±CDONALD. BETWEEN latitudes...extending from longitude 145"30 ° across the Queensland and South Australian boundaries into the heart...the ground. To the mineralogist the Warrego in Queensland and the Darling in New South Wales mark the eastern...while the chain of salt lakes in central South Australia defines the utmost limits of his investigations...across the fertile downs of Central and Southern Queensland, taking in on the south the vast alluvial plains |
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| Affiliated Associations: GeDlDlological Association of Australia Canadian GelnDlological Association Rhodesian...11 N o . 2 A P R I L 1968 MINERAL MINING IN QUEENSLAND By VICTOR G. C. NORWOOD T H E warning, crudely...of investigating geological reports of sapphire, opal, a n d agate discoveries in areas previously considered...long been suspected that extensive sapphire a n d opal fields remain to be discovered in arid regions of...insulators, etc., has been opened in Cairns, North Queensland. 31 I h a d been guaranteed 5s. per p o u n |
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| this is the place 49 A BRIEF LOOK AT AUSTRALIA'S OPAL MINING HISTORY The story of ambitious men who tamed...day. It came up from South Australia and I Jive in Townsville, Queensland. DIDN 'T HAVE A CLUE HOW IT...F.I. New World Shipwrecks Goldflelds of South Australia The Echunga Goldfields Video-Weekend Prospecting...book are still included. FOR THE BEST DEALS IN AUSTRALIA, JUST RING OR CALL IN **********************...anywhere in Australia. Visit our well stocked shop situated in the best nugget fields in Australia. Advice |
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| Faunas of Australia JOHN LONG The Western Australian Museum, Francis S1., Perth, Western Australia 6000 ABSTRACT-...ABSTRACT- Australia has a scant but significant record of dinosaurs which includes a prosauropod, two...have been dug up from other countries except Australia. The land downunder does have its own dinosaurs...we are finding more dinosaurs from Australia each year. Australia is in the middle of a palaeontological...few really large dinosaurs have been found in Australia many recent finds of small dinosaurs, and their |
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| Black Opal. [Frontispiece. Opal: The Gem of the Never Never By T. C. WOLLASTON Author... II. The Main Types Opal Opal III. Opal, IV. How — — a of Gem Opal Geological Part II. ... — — 16 — ... 33 Journey— the — The ... Opal — — Nature — in Getting Trancelike to 45...the — Home— Country Never Never Leases V. Opal Drought Last 11 ... ... Innamincka Stage...Stage The IV. OF Windorah Another 6 THE OPAL I. to ... Theories and THE the its Survey ON |
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| T H E STORY OF OPAL By G. FREDERICK SHEPHERD Technical Assistant In Geology - (1932) Museum of Science...Science and Industry, Chicago, Illinois Opal An Evil Omen? It is most deplorable that the mind of the...the mag nificent and ever-changing beauty of the opal to be maligned with puny super stition. Many objects...misunderstanding, ungrounded re port, or superstition, and the opal is one of them — with little, if any, reason for...for the spread of its ill-fated powers. The opal has not always been thought of as being unlucky, and it |
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| dollar run at Coobcr Pedy and saw his opal. As a result he became an opal miner for a holiday and, in 1965...Pcdy. This was the beginning of his love a�air with opal. For the next three years, until his return to medical...at Collarcnebri in December 1967, he searched for opal. Dr Kalokerinos became obsessed with the problems...which formerly surrounded precious opal. The author's love for opal is described with a lyricism rare...is the first serious study of Australian precious opal and describes for the first time some simple but |
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| Article 29 Si Solid-State NMR Analysis of Opal-AG, Opal-AN and Opal-CT: Single Pulse Spectroscopy and Spin-Lattice...A. 29 Si Solid-State NMR Analysis of Opal-AG, Opal-AN and Opal-CT: Single Pulse Spectroscopy and Spin-Lattice...Australian Museum, North Terrace, Adelaide, SA 5000, Australia; neville.curtis@flinders.edu.au College of Science...University, Sturt Rd, Bedford Park, SA 5042, Australia; jason.gascooke@flinders.edu.au (J.R.G.); allan...University, Sturt Rd, Bedford Park, SA 5042, Australia Department of Geology, School of Physical Sciences |
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| mmigration Ol ice. Opal Mines, Wbite Cllifs, New South Wales. Oourte8JI Special Opal Nuinber Granite and...1Iuseum. B y 1rilli<1m F. Foshag The Geology of Opal. By, Oilb rrt Hart.. . . . . . . . . . . . . . ...Quest of the Opal. B!I If. T. Strnng.. . ....................... . . ('(}Jor Play in Opal. B.11, Il. E... . . . . . . . . . . . . . . . . . . . . . 'fbe Opal. JJy E11,qe11e Jr. B1"11k..................... ...Nature, Oc·cune11ce anll U se. By ,John Jfe11111.sr Opal from the Columhin Plateau Basnlt F lows of ,vashington |
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| Mineral Collections in Australia A Supplement To The Mineralogical Record, September–October 2020 ... Mineral Collections in Australia Organized by Robert Sielecki Designed by Wendell Wilson with Photography...September–October, 2020 Mineral Collections in Australia A Supplement to The Mineralogical Record September–October...Corporation mine, Broken Hill, New South Wales, Australia. Collection of the Australian Museum; ex Albert...Top row from left: • 6 cm, Kalgoorlie, Western Australia; Lee Spencer collection, John Chapman photo. • |
Queensland, Australia