 | | 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...CUYAHOGA COUNTY CHAGRIN FALLS (on Geauga Co. line), area quarries⎯oilstone. DELAWARE COUNTY DELAWARE |  | | 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...CUYAHOGA COUNTY CHAGRIN FALLS (on Geauga Co. line), area quarries⎯oilstone. DELAWARE COUNTY DELAWARE |  | | Book (volume) | | Plains state varies from nearly level farmland to hill ridges, increasing steadily in elev. From 1,000’...Plains, wells drilled deep into this unit provide an inexhaustible supply of cold artesian, Rocky Mountain...instance, a single Spodumene crystal from the Etta Mine near Keystone on the east side of the Mount Rushmore...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 (issue) | | Scaynes Hill WEST SUSSEX RH17 7NH 01444 831252 nick.hawes25@gmail.com Catherine Foley 53 Carter Drive...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 |  | | Journal (article/letter/editorial) | | 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... and Allan Pring 2,4 South Australian Museum, North Terrace, Adelaide, SA 5000, Australia; neville.curtis@flinders...spectroscopy offers an additional method of characterisation of opal-A and opal-CT through spin-lattice...spin-lattice (T1 ) relaxometry. Opal T1 relaxation is characterised by stretched exponential (Weibull) function |  | | 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 |  | | Journal (article/letter/editorial) | | W1T 3JH, UK Australian Journal of Earth Sciences: An International Geoscience Journal of the Geological...tandfonline.com/loi/taje20 Towards a predictive model for opal exploration using a spatio-temporal data mining...D. Müller (2013) Towards a predictive model for opal exploration using a spatio-temporal data mining...mining approach, Australian Journal of Earth Sciences: An International Geoscience Journal of the Geological...1080/08120099.2012.754793 Towards a predictive model for opal exploration using a spatio-temporal data mining |  | | 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) | | Winter Branch Chairmen: Midlands - G.M. Green, North West - 1. Knight, Scottish - B. Jackson Examiners:...of euclase have been recorded from New Zealand, USA (Sharp, 1961), Europe, Guyana, Sri Lanka (Deen, 1984)...crystals were sold in the 1930s to collections in the USA (Pough, 1991; see also Dirlam et al., 1992; McKie...pegmatite was mined for microlite and tantalite and was an important source of gem beryl, producing both aquamarine...Uganda, euclase was recorded in the Namapherere tin mine, Ankole. Beryl is a common minor constituent in |  | | Journal (issue) | | an cA e!magazine {or c6rCinerologist, Geologist and eollector . . . . Vol. 12 No. . . . . •... . . . . . . . . . . . . . . . 304 B,rth of the Opal lpc,em l by Be tty Browne, R. T . . . . . . . ....MINERALS -- El\1ERALD Ston~ Pcrnt. AlcxJnd1: r Co North c.,rolin,, r,J;itural ~I zc Wcr~ht 9 ounces 1-...traveling in seven motor cars to Oreana, Pershing County, Nevada, to visit and inspect the Tungsten and...several others. In addition to visiting the Tungsten mine in Oreana Canyon and inspecting the rare Dumortierite |  | | 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 |  | | Journal (article/letter/editorial) | | 91125, USA z U.S. Geological Survey, 345 Middlefield Road, Menlo Park, California 94025, USA Abstract...to 3,300ppm (H/Si), and decrease smoothly by up to an order of magnitude with distance away from the seed...Science Division, P.O. Box 808, Livermore, CA 94550, USA Peak location Species Vibration nm cm 1 1,420...Stretch (~ 3,500 cm-1) + an unspecified lattice mode at ~ 500 cm - 1 in opal (Langer and F16rke 1974)...obtain an understanding of the actual sites that hydrogen occupies in synthetic quartz. Opal (Langer |  | | 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...Mrs. Peg Norton. President 11945 Magnolia Blvd.• North Hollywood. CA 91607 CONTENTS: Lee Holllnshead..................... 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 |  | | Book (edition) | | Saontn-tirs. LONDON: TL’inJNEK & 0 0., LUDGATK HILL ,885. ( AF r?A‘As j 'Batltmtpnir I.AllAMYN)... 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 |  | | 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...ADDRESS: P.O . BOX 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 |  | | Journal (article/letter/editorial) | | Measurement of Crystalline Silica" held in Cambridge. MA, USA, 20-21 August 1992. Although the' proceedings of...in this issue of Powder Diffraction. This paper is an example of review papers which are appropriate for...followup article in preparation on the cristobalite/opal controversy which will review the recent silica...silicon dioxide, SiO2, most commonly quartz, which is an ubiquitous mineral in nature. The main technique...impossible to synthesize without the presence of an alkali. Its structure is composed of tetrahedra linked |  | | 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 | | 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...significance for us all” a time, the economy of Whitby in North Yorkshire – the principal, local source of jet –...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 |  | | Book | | Martin Okrusch Hartwig E. Frimmel Mineralogy An Introduction to Minerals, Rocks, and Mineral Deposits...com/series/15201 Martin Okrusch Hartwig E. Frimmel Mineralogy An Introduction to Minerals, Rocks, and Mineral Deposits...Azurite crystals, partly replaced by malachite, Tsumeb mine, Namibia; width of view ca. 3 cm; collection H.E...comprehensiveness. Many subjects are dealt with to an extent that goes beyond what is typically expected...stage the idea was born to write the next edition for an English-speaking readership. This resulted on the |  | | Book (edition) | | Insects 20. Bond the West Indies (America north of Mexico) Mexican Birds— R.T. Peterson 21. Birds'...Walton &) Lawson Freshwater Fishes (N. America north of Mexico) Page &) Burr 37. Ecology of Eastern...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 |  | | Book (volume) | | Barnet and Monroe, Fig. 4, Section in Newbury and North Haverhill, Fig. 5, Section in Bradford and Piermont...and Charlestown, . Fig. 14, Folded clayey layers, North Charlestown, Fig. Fig. Fig. Fig. Fig. 15, Section...south side, . 25, Section of akame, Bennington, north side, 107 g. 26, Section of modified drift under...Dover, . g. 46, Section in kame south-east of Pine Hill cemetery, Dover, . 47, Section in sand near Wheelwright...LIST Part IV. Page. View of Moat Mountains and North Conway, ‘ ParT Figs. 1-6, Improvement patent, |  | | Journal (issue) | | Branch Chairmen: Midlands – P Phillips, North East – M Houghton, North West – D M Brady, Scottish – B Jackson...opportunity to visit a pearl farm belonging to North Bali Pearls in Penyabangan, which is part of PT...presence or absence of a bead. Figure 2 provides an overview, illustrating sectioned cultured pearls...Figure 1: The pearl farm in North Bali, an aquacultural business with an ultra-modern approach to oyster...host animals for the cultured pearls. Both halves of an oyster’s shell have a layer of soft skin. This tissue |  | | 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 | | dieses erfolgreiche Lehrbuch weiter zu betreuen und an den aktuellen Wissensstand anzupassen. Mit den 2005...textlich erweitert und gewinnen durch neue Abbildungen an Informationsgehalt. Neu hinzu gekommen sind ein Abschnitt...konstruktiv und vertrauensvoll. Hierfür herzlichen Dank an Merlett Behncke-Braunbeck, Martina Mechler, Dr. Chris...allgemeinen, anorganischen und physikalischen Chemie an vielen Stellen sehr nützlich. Im einleitenden Teil...Minerale in übersichtlicher Form und in Anlehnung an die Systematik von H. Strunz. Teil II ist der Petrologie |  | | 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 |
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