 | | Journal (article/letter/editorial) | | Geosciences, University of Sydney, Sydney, NSW 2006, Australia a r t i c l e i n f o Article history: Received...opal mined in Australia is sedimentary opal-A (Smallwood et al., 2008) with Australia supplying over...Ma 20oS Quilpie Mintabie Lightning Ridge Coober Pedy Great Artesian Basin S Australia 50 30oS...Ma when an epicontinental sea flooded central Australia (Frakes et al., 1987; Campbell and Haig, 1999)...Tertiary regolith (Thiry et al., 2006). In Winton and Quilpie (Fig. 1) the opal occurs within the late Albian |  | | Catalog/List | | l½ 11 2/6d., AMBLYGONITE Coolgardie, Western Australia. Massive white cleavable. lxl 1/-, lx2 2/6d.,...15/-. Variety: CHIASTOLITE Mount Howden, South Australia. Lar�e rough xls exhibiting cross or pattern growth..., 4 11 6/-. ANGLESITE Broken Hill, N.S.W., Australia. Glassy white to grey xline to xled. lxl 2/6d... 2x3 25/-. ATACAMITE Ravensthorpe, Western Australia. Green, nodular, radiating xline. lxl 3/-, lx2...sections. ½" to 111 2/- each. Londonderry, Western Australia. Pale green glassy xline. Pure. Fine specimens |  | | Catalog/List | | dealers label. (Hingsten Down fl5 qreen masses Australia) in f4 lxlins crystals cover1ng about 7mm high...6x5mm fibrous coating an lx2ins Queersland, Australia) crystals overall crystal Mexico) covering colour...piece of Boulder Opal. side af 2x2ins matrix. (Quilpie, New South 67 FOSSIL WOOD attractive brown cross...differnt shaes af brown. 4x2 ins cut and palished.( Australia) :ElO 68 COBALTIAN CALCITE (Tyne Bottom Mine...mm) in cavity on lxlins Agder, Norway) f.8 89 GOETHITE thin botryoidal Wales Mine, callington 90 BLIXITE |  | | Journal (issue) | | fields of Lightning Ridge, Koroit, Yowah, and Quilpie. REGULAR FEATURES 428 Lab Notes Graphite inclusions...Janse Benjamin Rondeau Tokyo, Japan Perth, Australia Nantes, France Timothy Adams E. Alan Jobbins...Artesian Basin: Lightning Ridge, Koroit, Yowah, and Quilpie. Their field report documents mining activity and...figure 4C, some yellowish foreign mineral (possibly goethite, dolomite, or a limonitic mineral) and a tiny...found in marble from Chillagoe, in northern Queensland, Australia (Lopez and Frost, 2015), showing major bands |  | | Catalog/List | | Eucrite-mmict Jundee Stations, Wiluna district, Western Australia (26° 27’S, 120° 22’E Fall: October 1960 Named...Tabletop Mt. Brockman Station Pilbara Western Australia This impressive Tiger’s Eye tabletop would be...darker colors are accented by bursts of yellow Goethite and serpentine bands of chatoyant Tiger’s Eye...exceptionally large areas of dark green Riebeckite and Goethite. The back has been coated with a thin layer of...Eye Slab Mt. Brockman Station Pilbara Western Australia Here is an aesthetically pleasing natural slab |  | | Report (issue) | | Spheres: Opal Formation in Australia BY JACK TOWNSEND 70 22 Queensland Opal 75 White Cliffs in New...ELIZABETH T. SMITH 44 The Opal Fields of South Australia BY ANDREW CODY 100 Synthetic, Color Enhanced... 8 Opal became the state gemstone of South Australia in 1985 and was officially recognized as the national...two of which pictured opal, were released in Australia on April 5, 1995. The pictured stamp and card...and after the bonanza finds of precious opal in Australia. A New Era for Opal Australian opal was first |  | | Journal (issue) | | Keller Letters FEATURE ARTICLES 4 16 p. 11 Queensland Boulder Opal Richard W . Wise Update on Diffusion-Treated...Abstracts Suggestions for Authors ABOUT THE COVER: Australia is the world leader in opal production. Some of...state of Queensland. The article by Richard Wise in this issue provides on overview of Queensland boulder...illustrated here-shown on a classic opal-bearing Queensland boulder-all have some of the ironstone matrix...attract new interest in the 1960s und 1970s. Queensland boulder opal is found associated with the Winton |  | | Catalog/List | | Territory, Australia — (24° 34’S, 133° 10’E) Found: 1931 The Henbury Meteorite from Australia is a popular...Meteorite Slice Ordinary chondrite, LL6 Queensland, Australia Found: 1975 A rare example of a Meteorite...its discovery, Naryilco was found in 1975 in Australia. It is classiied as an Ordinary Chondrite. Overall...hearty slice, shaped loosely like the continent of Australia, ofers unique duality as the primary side is etched...Bid: $500 72020 Boulder Opals Quilpie, Quilpie Shire Queensland Australia This ofering consists of three |  | | Journal (issue) | | mention you saw it in GEMS AND MINERALS. from AUSTRALIA CUT OPAL SPECIALS NO. 1 - Mixed Opals Three different...opals: white solid with fire, black triplet and Queensland boulder opal solid. All ready for immediate mounting...opal from Andamooka and Goober Pedy in South Australia. Mixed sizes and Mookalte . ... ...... . .......LTD. 120-122 Commercial Rd.• Pnhnn MELBOURNE. AUSTRALIA 3181 Cables: 'Ml111111' Melbaame ,.ane: 51-2021...AIRMAIL $27.00 SPECIAL AUSTRALIAN ROUGH GEMS CUT QUEENSLAND BOULDER OPAL 1 Ounce ROUGH COOBER PEDY OPAL |  | | Book | | 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...129 The Diamond Deposits of Argvle, Western Australia Index 141 FOREWORD Each gem deposit-whether...surlace waters, focusing on the opal deposits of Australia. Part II of this book is devoted to those gem... Egypt and the new find at Argyle in Western Australia are used as examples. It is worth noting that | | | Book | | 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...129 The Diamond Deposits of Argvle, Western Australia Index 141 FOREWORD Each gem deposit-whether...surlace waters, focusing on the opal deposits of Australia. Part II of this book is devoted to those gem... Egypt and the new find at Argyle in Western Australia are used as examples. It is worth noting that |  | | Journal (issue) | | the composition FeOOH, which occurs in nature as goethite or lepidocrocite. Whereas the former usually crystallizes...so that the analysed needles must therefore be goethite. These fibres described previously, are intercalated...to be haematite Furthermore, red-brown discs of goethite fibres in radial arrangement were observed in...quantities of iron were used up in the formation of goethite and haematite inclusions, the growth-chamber of...originate from Sri Lanka, Thailand, Tanzania and Australia and ISSN: 0022-1252 XVIII (7) 607 (1983) •a |  | | Catalog/List | | Pocket Knife Iron - IIIAB Northern Territory, Australia - (24° 34’S, 133° 10’E) The meteorite used to...5,000 years ago in the Northern Territory of Australia. This knife’s material has come full circle as...Selenite Pernatty Lagoon, Mt. Gunson, South Australia, Australia Wide blades of Selenite, stained green by...71 Ct. Coober Pedy, Central North, South Australia, Australia Connoisseurs of gem Opal are particularly...part of Mars, transplanted into the outback of Australia: Coober Pedy. Coober Pedy comes to us from the |  | | Journal (issue) | | the Moonta and Wallaroo mining districts, South Australia ................................................University of Wollongong Wollongong, N.S.W. 2500 Australia Thomas G. Vallance Department of Geology University...University of Sydney Sydney, N.S.W. 2006 Australia INTRODUCTION Australia, the island continent with a land...minerals and mines in their plans to establish Australia as a new colony in the late 18th century. The...explorer, had reconnoitered the east coast of Australia in 1770 and taken possession of the country in |  | | Journal (issue) | | Conference, Abstracts, Sydney, Geological Society of Australia, pp. 409–411. Nakashima S., Matsunami H., Yoshida...later in the United States (Linde, Regency), Australia (Biron), and Russia (Pough, 1965; Flanigen et...Birkner, Biron Corp., Balcatta, Australia; Dr. G. Brown, Brisbane, Australia; W. Galia, Bergisch Gladbach...sapphire-rich alluvial deposits of New South Wales, Australia. However, recognition of the coexistence of these...additional deposits there. Gem corundum from Australia and Southeast Asia. Dr. F. Lynn Sutherland, of |  | | Catalog/List | | DANNEMORITE Magnesium, iron, manganese silicate. Australia New South Wales, Broken Hill. Pale brown radiating...compact mass; very choice study material . . . Australia New South Wales, Broken Hill. Drusy white crystals...bright blue chrysocolla with malachite . . Australia W. Australia, Ravensthorpe. Green crystalline nodular...Titanium uranium calcium oxide. ABSITE Australia S. Australia, Crackers Well. Pure, olive-brown massive...50 13 BUSTA MITE Calcium manganese silicate. Australia New South Wales, Broken Hill. Coarse red cleavages |  | | Book | | anhydrite c. Partial exchange of constituents; e.g., goethite after pyrite, galena after pyromorphite d. Total...crystal. Thus a crystal of pyrite may be changed to goethite. If the change is more or less complete, a pseudomorph...pyrite crystal has been change to goethite, an epimorph of goethite has been formed on the pyrite. If...that SO4 2 resulted in feroxyhyte and then to goethite, perchlorate (with Cl- as an impurity) to lepidocrocite...also described ready alteration of feroxyhyte to goethite. Because both feroxyhyte and ferrihydrite are |  | | Journal (issue) | | purple-pink diamond, Argyle diamond m i n e , Western Australia; (19) 5.05-ct D-color, internally flawless diamond...from Brazil, sapphires from Southeast Asia and Australia, emeralds from Colombia and Zambia, and pegmatite...colorless diamonds emerged from new mines in Australia and Africa, joining traditional suppliers to more...sapphires during the 1980s: Australia and East Africa. Although both Queensland and New South Wales have...1980s hue. While some of the blue material from Australia is of good color and clarity, much of the remainder-which |  | | Catalog/List | | the carbonate of Zinc, surrounding a ‘Limonite/Goethite’ core. Small traces of Copper give the Smithsonite...visit HA.com/6068 49041 GOLD NUGGET Western Australia Gold has been used as currency for over 4000 years...ARBORMORPHIC GOLD NUGGET Kalgoorlie, Western Australia This delightful nugget immediately calls to mind...49043 FINE GOLD NUGGET Mount Margaret, Western Australia Of all the metals in the entire world, Gold has... 49045 SUPERB GOLD ‘BOULDER’ Coen, Northern Australia This gorgeous specimen is a thick, heavy mass |  | | Book (edition) | | Gemmological Association of Australia Fellow of the Gemmological Association of Australia Australian Director...mineral fragment of Zircon discovered in Western Australia is the oldest known object on earth. This is pretty...Andalusite CAMBODIA Blue Sapphire Ratanakiri Zircon AUSTRALIA Black Opal Blue Sapphire Chrysoprase Fancy Sapphire...State of New South Wales. Only discovered in Australia in 1849, today around 95 percent of the world’s...aplenty for its Opals, being compared to those from Australia. With less than one-tenth of a percent of the |  | | Journal (issue) | | Janse Benjamin Rondeau Tokyo, Japan Perth, Australia Nantes, France Timothy Adams E. Alan Jobbins...Jacob Nathan Renfro J.C. (Hanco) Zwaan Sydney, Australia Carlsbad, California Leiden, The Netherlands...fields in Australia (Abduriyim et al., 2012); from the Lava Plains area of northeast Australia, related...New England sapphire fields, New South Wales, Australia. Australian Journal of Earth Sciences, Vol. 59...basalt fields: a comparative study of Barrington, Australia, and West Pailin, Cambodia, gemfields. Journal |  | | Journal (issue) | | 259-1529. MARCH-APRIL 29-1-ROCKHAMPTON, QUEENSLAND, AUSTRALIA: Show, "Australian National Gemshow": Rockhampton...rough , fossils, (817) 419· 7069 USA, 61755949612 Australia. Email: _salopals @aol.com _ _ __ GF02 Opaholfcs...the op al capital of the world, Coober Pody, Australia. Stay In our underground opal cutlers Bod and... Lambina, Minlable, Lighlnlng Ridge, Opallon, Quilpie & Mexican opal rough and cut stones sold with excellent......... $38.00 carat. GOLDEN DENTRITIC AGATE, Australia. Satin smooth golden agate interlaced with black |  | | Journal (issue) | | AUSTRALIAN OPAL MINES Box 345, P/0 Magill, South Australia 5072 For All Your Opal Needs. Full cash refund...you answered Australia, you 'd also be correct. The gold-mining experiences of Australia and the United...subsequent gold-mining busts and booms in both Australia and the United States are eerily similar. And...of New South Wales, Australia. This was not the first discovery of gold in Australia. Prospectors had found...of the unusual societal conditions in colonial Australia at that time, these earlier discoveries proved |  | | Book | | l l ). AUSTRALIAand PACIFICISLANDS EUROPE AUSTRALIA GREECE Portland Harbor Trust quarry, Cape Grant...and pumpellyite (Ottens, 2003). AUSTRALIA and PACIFIC ISLANDS AUSTRALIA Broken Hill, New South Wales....Ottens (2008b). AUSTRALIAand PACIFICISLANDS AUSTRALIA Broken Hill, New South Wales. Now much better...overgrown on goethite, hemarite, jarosite and clay minerals (Pekov and Lykova, 2014). AUSTRALIA and PACIFIC...PACIFIC ISLANDS AUSTRALIA Broken Bill, New South Wales. Iodargyrite, simple silver iodide, was once common |  | | Book (volume) | | LTD. DURBAN : 33/35 Beach Grove AUSTRALIA: BUTTERWORTH & CO. (AUSTRALIA) SYDNEY : 6/8 O’Connell Street...diamonds from other localities, excepting perhaps Australia, but this hardness may be due more to the variation...and R. N. Brackett in 1889, but they found 18 AUSTRALIA no diamonds and from certain geological formations...economic importance. . Diamond AUSTRALIA was first found in Australia at Sutter's Bar on the Macquarie...Mudgee. At the Bingara-Tingha district near the Queensland border an important diamond field was discovered |
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