 | | Journal (issue) | | 515 Narragansett Park Drive, Pawtucket, RI 02861 USA • 1/8 HP / 22,000 rpm motor • Foot control and handpiece...68 30 26 38 Green Daylight-Fluorescing Hyalite Opal materials by Terri Haag 62 44 Trends: Pearls by...project by Eva M. Sherman Screamin’ Green Fluorescent Opal NEW! 54 Wire Wrapped Carnelian Pendant ® p....Sherman’s Three Stone Ring, page 50. PHOTOS: JIM LAWSON April 2017 3 MY TURN from the editor ® Your...EDITORIAL DIRECTOR Merle White 4 APRIL 22 IS EARTH DAY, an annual celebration of our planet since 1970, the |  | | Book | | • • • • ': . ·• Ranson1 , Jay E . Gems an d minerals of Arnerica 549 . 075 RAiJSO rti SAUSALITO...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...York North Carolina North Dakota Ohio Oklahoma Oregon Pennsylvania Rhode Island South Carolina South...Family Gemstones The Various Names and Forms of Agate Opal and Its Varieties Recommendations for Use of Polishing |  | | Book (volume) | | NORTInHIwo AME A Volumes John Sinkankas _ GEMSTONES OF NORTH AMERICA In Two Volumes ® Volume I Gemstones, of...of all the mineral treasures to be found in North America, are perhaps the most fascinating—and the...worthy of the name. Some, like the emeralds of North Carolina, the colorful and fabulous tourmalines and...review of deposits, a helpful geographical index, and an exceptionally complete listing of books and arucles...above all, easily read and understood, GEMSTONES OF NORTH AMERICA, Volumes I and II, will be welcomed as a |  | | 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 (article/letter/editorial) | | Copyright © 2002 Elsevier Science Ltd Printed in the USA. All rights reserved 0016-7037/02 $22.00 ⫹ .00 Pergamon...oozes. The reactivity decrease correlates well with an increase in the integrated peak intensity ratios...inorganic coatings enhance the reactivity by at least an order of magnitude. Atomic Al/Si ratios of 0.03 to...Ocean sediment trap material support the so-called opal paradox—that is, high BSi accumulation rates in...been based on batch experiments (e.g., Hurd, 1973; Lawson et al., 1978; Kamatani and Riley, 1979; Kamatani |  | Gehlen, M., Beck, L., Calas, G., Flank, A.-M., Van Bennekom, A.J., Van Beusekom, J.E.E. (2002) Unraveling the atomic structure of biogenic silica: evidence of the structural association of Al and Si in diatom frustules. Geochimica et Cosmochimica Acta, 66 (9) 1601-1609 doi:10.1016/s0016-7037(01)00877-8 | Journal (article/letter/editorial) | | Copyright © 2002 Elsevier Science Ltd Printed in the USA. All rights reserved 0016-7037/02 $22.00 ⫹ .00 Pergamon...consequences for the use of sedimentary biogenic silica as an indicator of past environmental conditions. Copyright...Copyright © 2002 Elsevier Science Ltd assemblages (Lawson et al., 1978) or diatom cultures (Kamatani et al...1% (Van Bennekom et al., 1989, 1991), compared to an average diatom Al/Si ratio of 1/1000 (Martin and...⬍0.1 ⫻ 10–3 Sample origin Wadden Sea tidal flat North Sea surface waters 8 ⫻ 10–3 8.30 ⫻ 10–3 ⬍1 ⫻ 10–3 |  | | Journal (issue) | | Vice-Chairman: P. W. T. Riley, F.G.A. Treasurer: F. E. Lawson Clarke, F.G.A. Elected Fellows: T. Bevis-SDlith...S. Tolansky, D.Sc., F.R.S. Instructors: R. K. Mitchell, F.G.A., Mrs. V. Hinton, F.G.A. Curator: R. Webster...check Dr. G. F. Claringbull kindly obtained for me an X-ray powder photograph from traces scraped from...do occur as intimate mixtures; and to obtain even an approximate estimate of the proportions in which...Robert Webster (!) carried out density measurements on an extensive range of green and pink jade-like grossulars |  | | Book (edition) | | Insects 20. Bond the West Indies (America north of Mexico) Mexican Birds— R.T. Peterson 21. Birds'...Birding by Ear: Eastern and Central Walton et? Lawson Advanced Birding Kaufman Medicinal Plants Foster...Birding by Ear: Western Walton &) Lawson Freshwater Fishes (N. America north of Mexico) Page &) Burr 37....45. 46. 47. 48. Backyard Bird Song Walton &? Lawson Western Trees Petrides Ecology of Western Forests...Poisonous Plants Foster More Birding by Ear Walton &) Lawson Geology Roberts &) Hodsdon eO Caras 549 POU |  | Gallinari, M, Ragueneau, O, Corrin, L, DeMaster, D.J, Tréguer, P (2002) The importance of water column processes on the dissolution properties of biogenic silica in deep-sea sediments I. Solubility. Geochimica et Cosmochimica Acta, 66 (15) 2701-2717 doi:10.1016/s0016-7037(02)00874-8 | Journal (article/letter/editorial) | | Copyright © 2002 Elsevier Science Ltd Printed in the USA. All rights reserved 0016-7037/02 $22.00 ⫹ .00 Pergamon...to study the thermodynamics of biogenic silica (opal) dissolution in deep-sea sediments. They were applied...concentrations (Casympt; 200 to 900 mol/L) and biogenic opal content (BSi; 0.5 to 80%). Performing these experiments...interference on the dissolution properties of the opal, both in situ and in flow-through experiments. In...matrix, it is important to determine the appropriate opal solubility to be used in early diagenetic models |  | | Report (issue) | | .. ... .. . 5. North-Western District, by J. V. Stephens, B.Eng., B.Sc. ... 6. North-Eastern District...District, by G. H. Mitchell, D.Sc., Ph.D., . .. ... ... ... D.I.C., F.R.S., F.R.S.E. 2. North Lowland District...there may be an interval of more than ·thirty years before it is possible to undertake an effective revision...of the M esozoic and sub-Mesozoic rocks, beneath an area of low gravity anomaly revealed by geophysical...essential to collect all the information upon which an assessment can be made of reserves for current and |  | | Report (volume) | | ........................ Axinitefrom San Diego County..... .............. .. .....__ Occurrence.................................. Axinite from Amador County ......................................... Crystallography...CONTENTS. Page. Albite from lawsonite schist, Marin County, Cal. ........ Association ................. ............ Orbicular gabbro from Pala, San Diego County, Cal......................... The refractive index...................... 72 72 Purpurite from North Carolina........................................ 72 |  | | 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 |  | | Report (issue) | | Arkansas 23rd 1987 24th 1988 Greenville. South Carolina 25th 1989 Portland. Oregon o nh Aurora. Illinois...products testing Edwin H. Bemzen Ill, Ore Sorters (North America), Inc . ........ .. . ............ .......consisted of technical sessions, a local field trip. and an optional three-day trip. All of the papers presented...hospitality room to test the efficacy of that sys tem. An optional field trip took 45 participants to mdusmal...markets. The estimated total value o f nonfue l mine ral productio n in Oregon in 1988 was $169 million |  | | Journal (issue) | | originated from the same crystal. 90 Play-of-Color Opal from Wegel Tena, Wollo Province, Ethiopia Benjamin...Gaillou Describes a major new source of high-quality opal with a mostly white bodycolor. Carat Points NOTES...Turquoise Gagan Choudhary 114 New Occurrence of Fire Opal from Bemia, Madagascar Martina Simoni, Franca Caucia...as a speaker or a poster presenter, please submit an abstract no later than January 10, 2011. Guidelines...time. The original ancestor of the Hope diamond was an approximately 115 ct stone (the Tavernier Blue) that |  | | Journal (issue) | | 1988 issue of Gems & Gemology contained an article titled “An Economic Review of the Past Decade in Diamonds...with all G&G articles, especially those that lead an issue, we demand a significant contribution to the... lower-quality diamonds from Australia’s Argyle mine, coupled with the exponential expansion of India’s...article looks at the many developments that have had an impact on the world diamond industry since the 1980s...information about diamonds, and celebrities made them an even more important element of high fashion (figure |  | 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...XV xvi Introduction international members and an affirmative response of at least two-thirds of those...Once accepted, the information must be published in an appropriate journal within two years or the CNMMN...work is a pragmatic, functional one. “‘A mineral is an element or chemical compound that is normally crystalline |  | | Journal (issue) | | Gubelin Laboratory's Christopher Smith, involves an identification technique that may seem esoteric to...Tucson lectures on the magnetism test, I suspended an elastic band from the thread, and the band acted...they are dust-like. When such inclusions are large, an unset synthetic diamond may jump 6 mm or more off...pp. 228-255 and 2-30, respectively]. Dr. Janse did an excellent job of condensing the most important historical...made in South Africa. For those G d G readers with an avid interest in the early years of South Africa's |  | | Report (issue) | | southern Utah, and eventually of the districts farther north, including the Deep Creek, Fish Springs, Dugway........ . ........................ _.. _. . "103 North~south folds and overthrust faults ... _..... _......................................... . Region north of Ogden, by G. F. Loughlin ........ _........ _...districts-Continued. Wasatch Range-Continued. Region north of Ogden-Continued. Box Elder, Willard, and Weber...Howell mine ........................ ~ ..................... ,.............. . 268 Barry-Coxe mine .... |  | | Book (edition) | | 1887 as the Manual of Mineralogy and Petrography. An edition number was given to some, but not all, reprintings...Dana's Manual of Mineralogy, has each been given an edition number as follows: 13, 1912 and 14, 1929...Sons, Inc. PREFACE Mineralogy education courses an integral part of the undergraduate is geologists...mineralogy. Chapter 12 is an introduction to petrology, and Chapter 13 gives the student an introduction to the...respectively, will generally not play a large role in an introductory mineralogy sequence. These subjects |  | | Book (edition) | | 1887 as the Manual of Mineralogy and Petrography. An edition number was given to some, but not all, reprintings...revision, as Dana’s Manual of Mineralogy, has been given an edition number as follows: Ze 73, 1912, and 14,...Crystal Chemistry,” can be viewed either as an introduction to or an overview of that subject, depending on...in this chapter more advanced and too detailed for an undergraduate mineralogy course. How- e ever, |...7, “Analytical Methods in Mineral Science,” gives an introduction to the most commonly used analytical |  | | Journal (issue) | | laboratory-grown diamond • Unusual laser drill holes in an HPHT-grown diamond • Hydrothermal synthetic ruby...collector gems • Loren Feldman custom knives • Black Opal Direct social media success • Yellow Sri Lankan...Lankan sapphire jewelry • Gray “spinel sisters” • An opal dealer’s battle with COVID-19 • True Blue Opals and...reaction to the pandemic • Mercury Free Mining • Opal treated with sugar/heat • Gianmaria Buccellati Foundation...from China’s Sichuan Province • Unusual repair of an emerald • Yellowish green enstatite • Star topaz |  | | Book (edition) | | 1887 as the Manual of Mineralogy and Petrography. An edition number was given to some, but not all, reprintings...revision, as Dana’s Manual ofMineralogy, has been given an edition number as follows: 73, 1912 and 14, 1929...America IO 9B 7 © 5 4) 32 PREFACE Mineralogy is an integral part of the undergraduate education of geologists...mineralogy. Chapter 14 is an introduction to petrology, and Chapter 15 gives the student an introduction to the...the 20th edition. The present edition incorporates an almost completely new chapter on “Crystal Chemistry’ |  | | Book (edition) | | ineralo0000klei I MANUAL OF MINERALOGY Cover An obi ique, computer-generated view of the structure...1887 as the Manual of Mineralogy and Petrography. An ed ition nurnber was given to son1e1 but not all... as Dana 's Manual of Mineralogy, has been given an edition number as follows: 73, 1912, and 74, 1929...the same as that published in 1993. Mineralogy is an integral part of the undergraduate educatio n of...mineralogy. Chapter 14 is an introduction to petrology, and Chapter 15 gives the student an introduciton to the |  | | Book | | Truran, Jr. and A. Heger University of Chicago, IL, USA 1.01.1 INTRODUCTION 1.01.2 ABUNDANCES AND NUCLEOSYNTHESIS...oxygen, and silicon burning to proceed. Collapse of an iron core devoid of further nuclear energy then gives...binary systems, mass transfer can take place from an evolving companion onto a compact object. This naturally...Wallerstein et al. (1997), and Woosley et al. (2002). An overview of galactic chemical evolution is presented...in the Sun. Allende Prieto et al. (2001) derived an accurate oxygen abundance for the Sun of log 1ðOÞ |  | | Journal (volume) | | (Croatia) (Hungary) (Slovakia) (Greece) (Hungary) (USA) (Hungary) (Egypt) (Austria) (Romania) (Hungary)...(Hungary) (Hungary) (Hungary) (Croatia) (UK) (Slovakia) (USA) (Austria) (Romania) (Slovakia) (China) (Germany)...(Germany) (Poland) (Italy) (Czech Republic) (Romania/USA) (Germany) (Hungary) (Russia) (Czech Republic) (Japan)............................319 EM61 Mineralogy of mine wastes and contaminated soil......................perovskite research (session dedicated to Roger H. Mitchell) ............................................ |
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