 | | Catalog/List | | 5:00 PM CT by appointment only. Lots are sold at an approximate rate of 65 lots per hour, but it is not...a stunning array of “gem” dinosaur bone featuring an unparalleled assortment of colors - each specimen...mammoths and mastodons, and even one from a dinosaur! • An “aquarium” of fossil fish is presented, including...Devonian, Silica Shale Formation Sylvania, Ohio, USA This is an almost pristine specimen of the classic Ohio...Asaphus expansus burrowing into an exposed edge of the stone, while an extremely rare and intricately |  | | Journal (issue) | | PRICES ARE BASED AT $180.00 per ounce, we will make an adjustment of price on day order is shipped. Prices...rockhounds. Elsewhere in this issue, you will find an article about some of the many uses for this versatile..................... 16 A Method for Using Tecopa Opal by F.W. Seasholtz ................................less than 14"x27". The standard Genie comes with an 80 and 220 grit 6"x1~ Galaxy metal-bond diamond grinding...Studio City. Ca. Pl!Ny. .. a tTIIPt I 1 ..... , c..an San Glbriel. Ca. City, Nev. 6 - Martin's Postal |  | | Journal (issue) | | metal-bond wheels are held on a heavy steel ring by an extremely hard. heat-treated nickel alloy plating...should be 25mm or more. If you want your stone to have an appearance like those pictured here, the sphere should...reverse the polishing instrutions. CROWN 1. Start with an 80 index gear. Cut the table to 50 percent of the...to produce all shapes of cabochons. Startin1 with an efficient diamond trim uw, then chan1es in seconds...After inquiring around, I was finally able to locate an art metal supplier who handles sheet pewter. I'll |  | | Journal (issue) | | historic pieces from assorted localities in the USA. Pieces selected from the American Philosophical...represented, with Arizona leading the tally with seven colorful (!) localities, with Bisbee at the front of...(Continues on page 3 Opal Claudeen Chisholm & Bill Shelton laeliason@msn.com The Name. Opal, at least the word...necessarily was used to refer to the gem we know today as opal. The first use in English is attributed to Philemon...■ Opale French ■ Opal English History. One source indicates several very early opal discoveries including |  | | Journal (issue) | | meetings. We also plan to run some field trips, so keep an eye on this space and our website. Our Sussex Mineral...almost pure aragonite suspended on a lattice of opal! ( Lab Girl (2016) by Hope Jahren.). ………………………………………………...join us. In March we found an additional advantage, as Zoom allowed us to hear an excellent talk delivered...elements was a micro of acicular needles of kaersutite, an amphibole, NaCa2(Mg4Ti)Si6Al23(OH) . To account for...the core. This leads to several changes, including an increase in luminosity and size. In a few billion |  | | Journal (issue) | | ISSUE 10 • OCTOBER 2020 FASCINATING FACTS ABOUT OPAL CLAIM TO COPPER FAME Butte’s Mining Legacy DYNAMIC...Printed in the U.S.A. 10 0 74470 02033 2 WIN AN OPAL PRIZE PACK! Details on page 6… 2 ROCKNGEM.COM...By Steve Voynick 28 10 FASCINATING FACTS ABOUT OPAL By John L. Carver and Bill Halepeska 62 REGULAR...specimen of opal from the prolific USA locality of Butte, Oregon, reveals a carving-grade opal as it is...rockngem.com FIELD NOTES our staff EDITORIAL EYE ON OPAL IN OCTOBER BOB JONES Senior Consulting Editor ANTOINETTE |  | | Book | | or the irregular bounding surface of an embedded grain or of an aggregate, or any mineral change that... as evidenced by the undistorted preservation of an original texture or structure, whether this be the...George Amadeus Carl Friedrich Naumann (1797e1873), an important pioneer European mineralogist and crystallographer...wholly different composition may grow in the body of an old mineral or mineral aggregate. Bates, R.L., Jackson...Frondel of Harvard University in 1935. It was based on an extensive study of pseudomorphs in the collections |  | | Book (edition) | | SIMON & SCHUSTER'S GUIDE TO ROCKS AND MINERALS An easy-to-use field guide, with over 1,000 spectacular...minerals, because regardless of whether they form by an organic or inorganic process, they are man made....coniferous trees; opal, an amorphous variety of hydrated silica; and limonite, an amorphous hydrated...long. However, it will be quite different from, say, an orthoclase crystal, whatever the latter's size. The...cube. , , parallel to one or two axes (i.e., with an infinite intersection) will have the corresponding |  | Gaines, Richard V., Skinner, H. Catherine W., Foord, Eugene E., Mason, Brian, Rosenzweig, Abraham, King, Vandall T. (1997) Dana's New Mineralogy (8th ed.) Wiley-Interscience. p.1872 | Book (edition) | | role in naming the plants and animals, also showed an interest in classifying the minerals. His natural...synonymy was improved and extended. The work became an international classic for over 50 years, due to the...Lhoest: Liege, Belgium. John C. Lucking: Phoenix, Arizona. Emil Makovicky, Inst. of Mineralogy, Univ. of...Wallace: Dept. of Geosciences, University of Arizona, Tuscon, Arizona. John S. White: Stewartstown, Pennsylvania...Wendell E. Wilson: The Mineralogical Record, Tuscon, Arizona. Barry Yampol: Oyster Bay, Long Island, New York |  | | Journal (issue) | | scintillating colors of Australian opal come to us through the courtesy of the Opal Spectrum company. For details...Our Cover feature. And, for a fascinating look at opal mining , plus more pictures, turn to page 8. AND...TX 78745 4 - JANUARY 1977 HOW TO CUT BRAZILIAN OPAL lapidary techniques for a new material by W.L Maison...and Barbara Thomas 32 TIPS ON BUYING AND CUTTING OPAL Advice from the professionals 34 ART NOUVEAU Easy-to-do...Gunther FEATURES 8 COO BER PEDY TODAY A visit to the opal mines by Lee Cross 15 INTERNAL STRUCTURES AND |  | | Book | | your own tumbling and grinding machineto cutting an emerald !The extensive reference section describes...mineral-collector and the experienced lapidary for whom itwill be an invaluable work of reference. FOKRieterehee 543...Left: Magnificent hexagonal crystals of chaiybite, an iron carbonate. The triangular 'growth shadows' that...are visible represent the form of the crystals at an earlier stage in th eir de veiopm en t This book...things, such as the wings of butterflies, can show an incomparable purity and brightness. In this connection |  | | Catalog/List | | Saturday, June 7, 2008, by 5:00 PM CT Lots are sold at an approximate rate of 70 lots per hour, but it is not...inches, while the other is 34 x 20¾ x 7. They have an aggregate weight of 208.56 pounds (94.8 kgs.). Estimate:...top of a mound of rich purple Amethyst crystals is an unusual hollow tube of Amethyst that is 2 inches...excellent condition. A rare and fine specimen from an under-represented locality; it has a custom labeled...hue than any other localities. This fine example is an open amethyst cluster with “diamond bright” deep | | | Book | | your own tumbling and grinding machine to cutting an emerald! The extensive reference section describes...a... “he experienced lapidary for whom it will be an invaluable work of reference. LIBRARY CHICAGO PUBLIC...eft: Magnificent hexagonal crystals of chalybite, an iron This book has several purposes: to introduce...are visible represent the form of the crystals at an earlier stage in their development fashioned gems;...things, such as the wings of butterflies, can show an incomparable purity and brightness. In this connection |  | | Journal (issue) | | Depending upon yield - 30 to 50% from our rough opal - and your market, profits should not be less than...cutting opal for profit, and WISH TO START YOUR OWN BUSINESS ask for our leaflet on how to cut opal more...2242, NORTH PARRANATTA 2151 , AUSTRALIA SEND ROUGH OPAL TO THE VALUE OF ------------------------------ $...accuracy, tenth-degree angle specifications and getting an even girdle line are covered by Thomas J. Ricks ...faceted stone by Rich ard D. Austin THE WISHING WELL An intriguing and challenging project for faceters by |  | | Book (volume) | | review of deposits, a helpful geographical index, and an exceptionally complete listing of books and arucles...America has developed into a major exporter rather than an importer. A VAN NOSTRAND REINHOLD BOOK . Digitized...AMERICA In Iwo Volumes Volume | JOHN SINKANKAS [aN] VAN New NOSTRAND York Cincinnati REINHOLD Toronto...neat erie ra 8 ‘y - ml 3 ee pon * : c= : an vi 5 = fii? i a j — » ya y _— ’* : ...amethyst deposit in Arizona by Dr. F. W. Galbraith of the University of Arizona. Robert O. Vernon of |  | | Book | | 142 144 146 150 152 154 Gold and power Opal Halley’s Comet opal Moonstone Shimmering colour Sunstone Labradorite...would soon be joining him in Paradise. Sometimes, an entire industry could arise from a gemstone’s associations...celebrities – all want to be photographed wearing an exquisite piece by one of the great names in modern...was given to Queen Mary of England in the 1550s, as an engagement present. It was later owned by Margaret...considered minerals. Certain substances, including opal and glass, resemble minerals in appearance, Mineral |  | | Book (edition) | | great changes of emphasis in mineral collecting and an unforeseen growth in the number of collectors. Mineral...Africa, and Asia have become significant sources. An increasing recognition of investment values in fine...carefully preserved to arrive on a dealer's shelf in an unblemished state. Would that the old-time miners...common can't-be-bothered attitude can be replaced by an enlightened recognition of the operators' public...History, the Arizona Mining and Mineral Museum, the Arizona Bureau of Mines, the Arizona Sonora Desert |  | | Journal (issue) | | ............................................. 17 An lndlan Style Necklace of Wood and TurquolH by James... Silver Prices Su~IICI To Dally CM111. No. 102 An ideal cement for all kinds of jewelry making and...CA. Host. Gam and Mlnaral Soc:laty of San Mateo County, H.B. Murnan, P.O. Box 53, NAS Moffett Field, CA...32ll34mm: w/ 14kt ball, 112.00. 21. • Add • , . .,... An"'"'-Y necklace. A 15" 14kt chain w/5 pearls. Add...Nephrite Jade Necklace I Bracelet Mt. Consists of an 8mm jade necklace. 18", knotted w/ gold plate clasp |  | | Book | | and have made virtually no use of fluorescence as an aid to identification. In this book, the fluorescent...each color—enable the user to turn his UV lamp on an unknown mineral, note its glowing fluorescence, and...contribution to science. A special acknowledgment to an ultra-violet pioneer THOMAS S. WARREN of San Gabriel...take with them into rough country. Pioneering in an uncharted field, he worked out circuitry, designed...State Division of Mines. Arthur L. Flagg of the Arizona State Department of Mineral Resources offered the | | | Book | | and have made virtually no use of fluorescence as an aid to identifi- cation. In this book, the fluorescent...each color—enable the user to turn his UV lamp on an unknown mineral, note its glowing fluorescence, ...probing deeper A special acknowledgment THOMAS to an ultra-violet pioneer S. WARREN of San Gabriel,...take with them into rough country. Pioneering in an uncharted field, he worked out circuitry, designed...Murata, and Alice Weeks. Arthur L. Flagg of the Arizona State fornia State Division of Mines. Department |  | | Book | | For all thei.r skiUs and expertise - wor1h more th,an gold were the.y. We also must ac.knowle.dg-e, f,o...one's favourite specimens for this publication. Not an easy task. As the current chairman of SMLS I hope...overseas field trips; to Europe, Siberia, Namibia, the USA & Canada and the Faroe Islands. Practical courses...hydraulic shaft in the Smallcleugh Mine and we bought an inflatable dinghy so we could land on Sgurr nam Boe...something from each field trip. Thus I have accumulated an eclectic collection of rocks, minerals and fossils |  | | Book | | many Silunan materials. Several and steel in Ordovic,an s,o engmeenng. Carnbnan 570 aspects of these sciences...occurrence and the qualities to note when making an identification. Many of lhc technical lt'rms used...""""'"''• ""' «,,=,.;,;,-..,~ .. ;,, cei,tsurn,r,an,es tho """'~ ~""'"' ~ - - ol ~,· _.., ,,.,•...Asterisl<5 - - - - - + - - - denoie the most ll!ll)O<\an! d,S1m9u,sh,,,g fec:ures of rn,oe,a~ bamples ""'...major chemical componen ts? The Earth consists of an extremely di:nse core, a fairly dense mantle and |  | | Journal (issue) | | several things : 1) Tweak the curiosity which is an essential part of the makeup of every hobby craftworker...of product, as in dental inlays and crowns. It i'> an old process. Those who viewed the recent Tutankhamen...(12-18): $2.50 Under 12 free when accompanied by an adult SHOW HOURS August 7th 10 a.m. to 9:30 p.m...who display at Los Portales GalJery in Carefree, Arizona and in Rancho Bernardo, California at Bernardo...the other works. These artists work directly with an acetylene torch. None of the pieces shown were cast; |  | | Book | | 142 144 146 150 152 154 Gold and power Opal Halley’s Comet opal Moonstone Shimmering color Sunstone Labradorite...not a story. A story has a beginning, a middle, and an end. This book is a map, a codex, a tool to help...ventromedial prefrontal cortex (vmPFC), that both assigns an object its worth, and determines the depth of your...actually evolved to look for colors, and to have an extreme emotional response to them. And even more...the story of stones with a beginning, a middle, and an end, because it has no beginning, and it has no end |  | | Book (edition) | | publica1ions) 'Third edi1ion'-Forcword. Rev. ed. of: An index of mim:ral species & varie1ics arranged chemically/...of Minemls was published and it soon proved to be an important and standard reference work for mineralogists... The number of known species is now around 3500- an increase of some 600 in the last ten years - and...Embrey obtained an on-line version of the second edition and its appendices by editing an optically-character-read...Pennsylvania, USA. Introduction This volume is the third edition (retitled) of M. H. Hey"s An Index of Mineral |
|
Bisbee, Cochise County, Arizona, USA