 | | Journal (issue) | | collector, and Shields Flynn, geologist and long time East Coast dealer, bore fruit with tremendous success...historic pieces from assorted localities in the USA. Pieces selected from the American Philosophical...Tourmaline Queen mine in Pala and its big blue cap matrix pieces. (Continues on page 3 Opal Claudeen Chisholm...Chisholm & Bill Shelton laeliason@msn.com The Name. Opal, at least the word itself, is attributed to several...necessarily was used to refer to the gem we know today as opal. The first use in English is attributed to Philemon |  | | Book (volume) | | concerned, Ohio is unique in but a single gemstone, an exceptionally high quality, colorful flint that is...chert, translucent chalcedony, jasp-agate and common opal, rivaling in beauty the Arizona agatized wood. This...ASHTABULA COUNTY CONNEAUT, area pits, quarries, rd. cuts, etc.⎯cone-in-cone Calcite. CLERMONT COUNTY MILFORD...CLINTON COUNTY WILMINGTON, area of Todd’s Ford, a mineral deposit⎯Hematite. COSHOCTON COUNTY AREA, townships...Rock Hounds in the Untied States townships of Franklin, Keene, Mill Creek and Tuscarawas, as hard dark |  | | Book (volume) | | 7,242’ this peak is the highest point in America east of the Rocky Mts. Cambrian rocks are exposed as...Plains, wells drilled deep into this unit provide an inexhaustible supply of cold artesian, Rocky Mountain...single Spodumene crystal from the Etta Mine near Keystone on the east side of the Mount Rushmore National...beds, excavations, etc.Selenite roses. BRULE COUNTY AREA: in the Oacoma zone of the Pierre Fm. On Elm...gray Barite rosette up to 5 or 6 inches. CAMPBELL COUNTY MOUND CITY, W to the Missouri R., regional hillsides |  | | Journal (article/letter/editorial) | | Potter-Cramer Mine Figure 1. Potter-Cramer mine vertical shaft. Mike Sawicki photo. Reproduced with... Maricopa County, Arizona Figure 2. View facing southeast, showing the Potter-Cramer mine from the adjacent...fluorescent mineral wickenburgite. Also found at the mine are several other rare minerals, including phoenicochroite...and vauquelinite. I have owned the Potter-Cramer mine since 2002 and have recently mined some of the finest...Potter-Cramer mine is located along the northern flank of the Belmont Mountains, Maricopa County, Arizona |  | | Book (volume) | | concerned, Ohio is unique in but a single gemstone, an exceptionally high quality, colorful flint that is...chert, translucent chalcedony, jasp-agate and common opal, rivaling in beauty the Arizona agatized wood. This...ASHTABULA COUNTY CONNEAUT, area pits, quarries, rd. cuts, etc.⎯cone-in-cone Calcite. CLERMONT COUNTY MILFORD...CLINTON COUNTY WILMINGTON, area of Todd’s Ford, a mineral deposit⎯Hematite. COSHOCTON COUNTY AREA, townships...Rock Hounds in the Untied States townships of Franklin, Keene, Mill Creek and Tuscarawas, as hard dark |  | | Journal (issue) | | the U.S.A. 05 0 74470 02033 2 UNM’s HARDING MINE Exploring Plentiful Pegmatite 2 ROCKNGEM.COM ...With WorldWide Popularity 20 NEW MEXICO’S HARDING MINE The Must-See Pegmatite of the West Steve Voynick...LOCATION Y Covington Same Great Product 520 E. Franklin Rd. Meridian, ID 83642 www.covington-engineering...received a shipment of High Grade Welo opal from Ethiopia-posting new opal parcels daily. Please call or order...TOURMALINE with ALBITE and QUARTZ Himalaya Mine, San Diego County, CA Watercolor by Frederick C. Wilda© |  | | Journal (issue) | | Feature Articles 490 Green-Luminescing Hyalite Opal from Zacatecas, Mexico By Emmanuel Fritsch, Peter...colour appearance of this rough and cut hyalite opal from Zacatecas, Mexico, is due to its green daylight-induced...Laguna Beach, California, USA. Photo by Orasa Weldon. 532 Conferences Sinkankas Opal Symposium|AGA Las Vegas|Mallorca...Edward Boehm, RareSource, Chattanooga, Tennessee, USA; Alan T. Collins, King’s College London; John L....Emmett, Crystal Chemistry, Brush Prairie, Washington, USA; Emmanuel Fritsch, University of Nantes, France; |  | | Journal (issue) | | ANOTHER CHALLENGE SMLS BARBECUE 2021 CONONISH GOLD MINE ZOOM LINKS DATES FOR YOUR DIARY MINERAL QUIZ 3 –...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...retired Professor of Physics and Astronomy at Franklin and Marshall College in Lancaster, Pennsylvania |  | | 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...ee pon * : c= : an vi 5 = fii? i a j — » ya y _— ’* : i mine in. q)! Y eit iia...loan of photographs of Tampa Bay silicified coral. An outstanding compilation of Mexican gemstone information |  | | 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 | | • • • • ': . ·• Ranson1 , Jay E . Gems an d minerals of Arnerica 549 . 075 RAiJSO rti SAUSALITO...information address Harper & Row, Publishers, Inc., 10 East 53rd Street, New York, N.Y. 10022. Published simultaneously...Gemstones and Minerals; Volcanic Flows; Values in an Outcrop 4. Preparation for Field Collecting 52...Petrified Wood 131 Characteristics of Agates; Opal, Queen of the Gems; Petrified Wood; Commonly Occurring...Iowa Kansas Kentucky Louisiana Maine Maryland Massachusetts Michigan Minnesota Mississippi Missouri Montana |  | | 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 |  | | Book | | recognized as an authority in the lapidary field. Beginning with a description of agate, he proceeds to an interesting...ties and forms of quartz gems other than agate, opal and its varieties, and petrified wood a great favorite...tell abot1t otl1er Cttiartz varieties st1ch as the opal, jasper, ancl petrified wood; a11d to give l1in1...received, and one al,vays fears that the na111e of an in1portant aclviser may be left out. Ho,vever, in...12 were also const1lted. Nlany other sot1rces in an extensive library on the st1bject were const1lted |  | | Journal (article/letter/editorial) | | minerals Article Silicification of Wood: An Overview George E. Mustoe Geology Department, Western Washington...Washington University, Bellingham, WA 98225, USA; mustoeg@wwu.edu Abstract: For many decades, wood silicification...generalization. Keywords: silicification; fossil wood; opal-A; opal-CT; chalcedony; quartz 1. Introduction Citation:...Citation: Mustoe, G.E. Silicification of Wood: An Overview. Minerals 2023, 13, 206. https://doi.org/ 10...Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and |  | | Report (issue) | | KINO Assistant Geologist 1894 Atlanta, Ga. The Franklin Printing and Publishing Co. Geo. W. Harrison...many features have in been elaborated; other words, an attempt has been made to harmonize scientific accuracy...A. Burdick, Manager of the Laurel Creek Corundum Mine, Pine Mountain, Rabun Co., Ga., Mr. Corn of Visage...to the blossoms of the organic stones are found, an evaporation obviously countries. It burnt tropics...Aristotle and his pupil, Theophrastus, the latter writing an excelsixth century lent treatise Roman B. indicate | | | Book | | THE BOOK OF yJ An>> aT -v • J[. Illustrated. $9.^5 ISBN 0-8019-0964-3 OF VERMONT ENT OF LIBRARIES...as an authority in the lapidary field. Beginning with a description of agate, he proceeds to an interesting...varieties, with favorite location of quartz agate, opal wood — collectors. The petrified gems throughout... tell about other quartz varieties such as the opal, and petrified wood; and to give him the most complete...received, and one always fears that the name of an important adviser may be left out. However, in the |  | | Journal (issue) | | MINERALS ALLANITE (EPIDOTE GROUP) / @ Amherst County - Black pitchy allanite is found in a small pegmatitemass...used because of their radioactivity. Campbell County - Andalusitecrystals,somevery large,have been reported...attractive cabochons can be cut. BERYL Amelia County - Clear gem quality beryl fragments measuring 0...di~nensionhave been found at the Abner Pinchbeck mine 0.5 miles east of Amelia (Dietrich, 1970). Small bluish-green...Powhutcan County - Clear beryl crystals (goshenite) occur at the Herbb # 2 pegmatite mine north of Flat |  | | Journal (issue) | | sciences , NO . 4 - JUNE , 1898 . CONTENTS AsbestUS , OPAL FIELDS OF AUSTRALIA , HALITE FACT AND FANCY , GEORGE...and form of all known species and varieties , with an up - to - date supplement . A Metallic Classification...found in Delaware County, Pa. The radiating variety can be found in John Smedley's mine near the Black Horse...and Rockdale. Some excellent specimens come from East Nottingham, Chester Co., many of them measuring...are hard and rigid, which if broken across presents an irregular structure resembling wood, hence it is |  | | Journal (issue) | | SEPTEMBER 2020 38 PENNSYLVANIA’S PEQUEA SILVER MINE 10 Agate Origins and Formation Natural Treasures... so I only walked out where he suggested, to get an idea of what’s there. I walked out maybe 75 yards...We’ve t io a n r o p r o C Covington Y 520 E. Franklin Rd. Y ID 83642 Meridian, www.covington-engineering...83642 Show Room Now Open! M-F 7:30-4:00 MST NEW OPAL SHIPMENT IN FROM ETHIOPIA THIS MAY BE THE BRIGHTEST...COLORFUL AA & AAA GRADE OPAL. PLEASE SEE OUR WEBSITE FOR NEW LISTINGS OF THIS OPAL THE VILLAGE SMITHY OPALS |  | | Journal (issue) | | Zimbabwe | Chromiumbearing Translucent Green Common Opal | Blue Sapphires Reportedly from Azad Kashmir |...Silica Glass Sold as RockCrystal Balls | An Unusual Pink Synthetic Opal | Quench-Fractured Bicoloured Synthetic...courtesy of The Walters Art Museum 119 172 Hyalite Opal from Erongo, Namibia, Showing Green Daylight Fluorescence...University, Cambridge, Massachusetts, USA Edward Boehm RareSource, Chattanooga, Tennessee, USA Maggie Campbell...Emmett Crystal Chemistry, Brush Prairie, Washington, USA Emmanuel Fritsch University of Nantes, France Alan |  | | 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 |  | | Book (edition) | | hi the reno- rations }iavf‘ luM^n introduced, an im- been adopted, tlie talde for the and tln^ chapter... 1 . SiLDLVTLS. SILICA. TAGB Quartz 2 dd Opal 23 b * 2 Ceil oral . SILICATES. Remarks 212... MINERALOGY. Minerals. Minerals nT(‘, llio plants an...portant for (h(‘ imdal they (‘ontain. gentn-ally in an impure state from ili(‘ |)i'^"s<,!uee of oilier minerThe...lerals ^ iaUb.dtlon of if) L'he))i\r(d Proptriles of Mine nth ; (4) J lescrqjtions of Sj/6; cles j (o) JJeientiUiutloii |  | | 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 |  | | Journal (article/letter/editorial) | | • An unique mineral suite in a syenite pegmatite at Virikkollen, Sandefjord, Larvik Plutonic Complex...Norway is reported from here, besides the find of an aspedamite-like mineral (UK-H). In this paper we...LPC covers today an area about 50 km x 20 km in the southern part of the Vestfold County, between the Langesundsfjord...Langesundsfjord in the west and T0nsberg in the east. Petersen (1978) studied the internal structures...activity shifted from east to west (Fig. 1). U-Pb dating on zircons and baddeleyites gave an age of 297.3 +/- |  | | 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...up-to-date information should write to Mr. Karl Case, 275 East 18th Street, #70, Costa Mesa, California 92627. |
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