 | | Book | | HagendorfPleystein Province: the Center of Pegmatites in an Ensialic Orogen Modern Approaches in Solid Earth...Pegmatites in an Ensialic Orogen Harald G. Dill Gottfried-Wilhelm-Leibniz University Hannover, Germany Responsible...rocks and minerals (German: Steinpfalz = Stony Palatinate). To cooperate with him meant to have a friend...did not postpone my questions. I did not receive an answer from him, he provided me with a solution....much biased by science with too little sense of mine for beauty) will keep his memory and work, alive |  | | Journal (issue) | | Franks, B.Sc., Ph.D., F.G.A. South Yorkshire & District Branch: J. I. Platts, F.G.A. Examiners: A. J....D.Gem.G. Im Sierling 2, 6581 Hettenrodt, West Germany. INTRODUCTION During the last few years, the...flux feather revealed in the Chatham product showing an appearance almost similar to the partly healed liquid...x ). FIG. 11. Distributed flux feathers showing an indistinct appearance in the Chatham product, (lightfield...). 16. Short, stubby plate-like prisms seen in an Inamori-grown orange sapphire, (reflected light, |  | | Journal (article/letter/editorial) | | attending members. A banquet is being planned and an all out effort is being made by the Convention Committee...were found right on the campus of the University, in an underlying strata of the Newark Series where many...studies, while teaching at the University and was an official member of the staff for 49 years following...across the road from the Davidson residence, provided an ideal place for this entertainment. To see the home...Vice-president, Mrs. Peg Nielsen Recording Sec-Treas., Mrs. Wilma Kopp Corr. Secretary, Mrs. Edith Watts Regular meetings |  | | Journal (issue) | | Hanni4 1. Marbacher Str. 22b, D-85238 Petershausen, Germany 2. National Gemstone Testing Center, Beijing 100034...Mineralogie, Ruhr-Universitat, D-44780, Bochum, Germany 4. SSEF Swiss Gemmological Institute, CH-4001 Basel...rim not observable in small concentrations due to an overlap of VKa with TiK~ Six-rayed star with thin...c4,f) or or zoned yellowish-white in an inner part and yellow in an outer part of the sample (e). Sizes...fluorescence analysis reveals an average composition of that part of the ruby in an area exposed to the X-ray |  | | Journal (issue) | | Peretti 2 1. Taubenweg 16, D-85238 Petershausen, Germany 2. GRS Gemresearch Swisslab AG, Lucerne, Switzerland...and Peretti, 1999). Three samples were grown with an inclination of the seed plate at 40° to the c-axis...sapphire reveals six a {1120} prism faces and has an absorption spectrum comparable to the spectrum of...of yellow synthetic sapphire {Figure 4) revealed an absorption Figure 3: Boundaries of variable orientation...of sapphire J. Gemm., 2000, 27,1,1-7 Thailand, an additional weak Cr3* absorption band can also be |  | | Journal (article/letter/editorial) | | subsidence along the Otjiwarongo Rift Zone produced an oceanic basin with thinned continental crust. In...folds. The Swakop Terrane was metamorphosed to upper amphibolite-facies conditions with anatexis in the...accretionary prism (de Kock, 1989; 1992; Hoffmann, 1990) or an accretionary complex (Kukla and Stanistreet, 1990)...Gritstone, containing abundant sillimanite porphyroblasts, normally occurs at the upper part of these upward-fining...Lievenberg Domes (Figure 3). The Kawakeup Formation, an orangered, fine- to medium- and very evenly grained |  | | Journal (article/letter/editorial) | | Late Proterozoic Adelaidean sediments, however, have an average model age of 1.9 Ga and initial tNd values...Late Proterozoic and Cambrian sequences. They have an average model age of 1.85 Ma but much higher KZO/Na...geological history principally involving recycling. An alternative view, maintained by many workers (e.g...sedimentary sequences subsequently deformed during an erogenic event involving metamorphism and magmatism...alternatively simply record crustal reworking is an important first order step in constraining current |  | | Journal (issue) | | Mines and Localities BE A PROSPECTOR VISIT OUR MINE-KEEP WHAT YOU FIND DOOR PRIZES HOURLY DEALERS...J. Alexander Speer Minerals from the Old Sulphur Mine, Louisa County, Virginia Richard S. Mitchell and...Displays and Collections in Virginia RichardS. Mitchell An Introduction to VPI’s Museum of Geological Sciences...Classified Advertisements VIRGINIA! The Rutherford Mine, Amelia Court House and certainly Mineral, Virginia...stones which rival obsidian. In using the mineral as an ornament, however, one should be aware that it is |  | | Journal (issue) | | Lieber Heidelberg, W. Germany Olaf Medenbach Ruhr Universitat Bochum Bochum, W. Germany Eric Offermann Arlesheim...and paragenesis of the Little Three mine pegmatites, Ramona district, San Diego County, California .....................100 by W. E. Wilson Notes from Germany .................................................e ssa rtin e d ik e , L ittle T h ree m in e , S an D ieg o C o u n ty , C alifo rn ia. Los A n g e le...is the execution of the square root of a number. An increasing number of people have no idea how to do |  | | Report (issue) | | mines and prospects___________________ 60 Addie tin mine._________________________________ 60 Ajax claim...___________60 Aladin mica mine by J. W. Adams____________ 60 Ann mica mine by T. A. Steven_________________...Steven_________________ 61 Antler mica mine.._-___--__--__-___-_-_-___-___ 64 Apex claim.___-__________-_-----_---_--_-____64...No. 2 claims.___________________ 65 Ballard mica mine._____________________________ 65 Beecher Lode by...____________ 83 Burt mica mine by J. W. Adams______-----______ 84 Buster Dike mica mine by J. J. Norton_ _________ |  | | Journal (issue) | | iewelry worn by ladies from the royal and wealthy upper classes of Europe and America at the turn of the...Bangkok, Thailand Karl Schn~etzer Petersluusen, Germany James E. Shigley Santa Monica, CA SUBSCRIPTIONS...Bloomington, IL; Josef Bogacz, Idar-Oberstein, Germany; Rudiger M. Boslzovic, Armidale, NSW, Australia;...Spain; Benito Giacintucci, Florence, Italy; Wilma van der Giessen,Voorburg, Netherlands; Louis J. Ginsberg...Montreal, Que., Canada; Martin Lepold, Mainz, Germany; Dorothy Lewis, Richboro, PA; Gloria Lillie, Singleton |  | | Journal (issue) | | Ueber Heidelberg, W. Germany Olaf Medenbach Ruhr Universitat Bochum Bochum, W. Germany Eric Offermann Arlesheim...Moore Phosphate minerals from the Leveaniemi iron mine, Svappavaara, Sweden .............................Hollabaugh Laueite from Hagendorf-Siid andthe Palermo mine ................. 363 by L. C. Pitman New data...SILVER, heav y w ires o n m atrix, 7.5 cm tall, from an u n k n o w n locality in Mexico. C ollection of...are M ineraiogical M useum ; p h o to by H aro ld an d Erica Van Pelt (see p. 322). Copyright 1989 © by |  | | Journal (issue) | | originate from the Weligama gem gravels in the Matara district. Back in Holland, Korevaar contacted the Dutch...stones individually varied from 3-329 to 3-350, with an average of 3-338 It should be noticed that the smallest...1-43 carats. Although ethylene dibromide was used as an immersion liquid, together with a very accurate hydrostatic...almandine garnet from Umba, Tanzania, as well as in an almandine garnet from Sri Lanka (Zwaan, 1967). He...for the trade, and gems (i.e. stones) followed as an ancillary study. So when our x-ray generating set |  | Collins, Donley S., Cobban, Robert R., Foord, Eugene E., Murphy, Jack A. (1989) Bibliography for update and revision of U.S.G.S. Bulletin 1114, Minerals of Colorado -- a 100 year record, by Edwin B. Eckel, Part A - Paper copy --Bibliography data file disks. Open-File Report Vol. 1989 (89-206) US Geological Survey doi:10.3133/ofr89206a | Report (issue) | | Thalenite in the White Cloud pegmatite, South Platte district, Jefferson County, Colorado [abs.]: Canadian Mineralogist...and ore deposits of North Star Mountain and Ling mine, Summit and Park Counties, Colorado: M.S. thesis... Alexander, D. H. , 1974, Petrography and origin of an orbicular lamprophyre dike, Fremont County, Colorado:..., v. 19, no. 113, p. 390393. Alien, M. S., 1982, An evaluation of stream sediment and heavy mineral concentrate...recommendation for the exploration of an uranium occurrence in the Iron mine, Russell Gulch, Gilpin County, |  | | Journal (issue) | | Lieber Heidelberg, W. Germany Olaf Medenbach Ruhr Universitat Bochum Bochum, W. Germany Eric Offermann Arlesheim...293-295 of this issue. Photo by H arold and Erica V an Pelt. Copyright 1986© by the Mineralogical Record...Better to be a full-fledged mineral collector than an amateur anything, so the reasoning seems to go. Mineral...collecting involves (at its fullest development) an ency clopedic knowledge of mineral localities worldwide...crystallography are valuable to have, along with an eye for esthetics. Modern professional mineralogists |  | | Report (issue) | | L COVER Left: Betafite crystals, Silver Crater Mine, Cardiff. Specimen measures 6 cm by 4 cm by 3 cm...occurrence Davis Hill occurrence Princess sodalite mine Vardy quarry Golding-Keene quarry Egan Chute occurrences...corundum occurrence Childs Mine Rankin Mine Bessemer (Mayo) Mine Ruby (Jewell Ruby) Mine Bancroft to Maynooth...McCormack Mine Watson Mine Cairns Mine Plunkett Mine MacDonald Mine Woodcox Mine Genesee No. 2 Mine · Thompson...Thompson Mine Hickey Mine Selby Hill sunstone occurrence National Graphite Mine McKenzie Lake Mine Bancroft |  | | Report (issue) | | ......... Creasus mine ........................................ 77 Red Jacket mine ............................. 81 Geologic history of the Hopewell district Clara D., Mary E . Steele. Grand Mogul. Little...cleavage in the Hopewell district . . . . . . 67 6. Lineation in the Hopewell district ......................the Hopewell district .................... 78 8. Mine and sample map of the Croesus mine . . . . . . ...Geologic map of the central part of the Bromide district . 90 11. Geologic map of the Cleveland Gulch area |  | | Report (issue) | | granite and pegmatite in granite, Short Tom Smith mine, Rockingham County, N. C______ ____ ____________________...contacts between pegmatite and granite, E. R. Self mine, Gaston County, N. C____________________ 6. Sinuous...wall, Knight mine, Rockingham County, N. C- ~ -7. Sharp hanging-wall contact, Knight mine ______ _______________...layered sill of granite underlain by schist, Hawkins mine, Stokes County, N. C _ _ _ _ _ _ __ _ _ __ _ _ _...______ 23. Pegmatite lens in a fault zone, Monteiro mine, Goochland County, V,a_ _ _ _ _ _ _ _ _ _ _ _ _ |  | | Journal (issue) | | 1350°C in an oxidizing atmosphere for seven hours (see 'Myanmar and its gems - an update' p.3) Upper photo...0022-1252 J. Gemm., 1994/24,1 2 STUDENT STARTER SET AN IDEAL STARTER SET FOR ALL STUDENTS OF GEMMOLOGY ...plus VAT, postage and packing GAGTL members receive an additional 10% discount on the Special Introductory...(Please quote your membership number when placing an order) Gemmological Instruments Limited • FIRST... J. Gemm., 1994, 24, 1 3 Myanmar* and its gems - an update Robert C. Kammerling1, Kenneth Scarratt2, |  | | Journal (issue) | | sitat Gutenberg-Universität Mainz, Mainz, Germany Germany ABSTRACT: ABSTRACT: Two Two new new types...channels in in marble, marble, and and (2) (2) an an occurrence occurrence ofof aa primary primary hessonite...quartzite, pelitic gneiss, khondalite (a garnet-sillimanite schistose rock) and metamorphic rocks of igneous...VC units, which consist mainly of granulite to upper amphibolite grade metamorphic rocks derived from...morphological feature of the OkkampitiyaMaligawila area is an erosional remnant which occurs in the form of a |  | | 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...printer, typographer, and publisher knows full well, an error-free reference work is as rare as feathers...sensitive, understanding editor and a willing publisher, an author is really something of a disembodied spirit...contributor to this book is my long-suffering wife Wilma, Dutch artist and novelist, who kept me well supplied |  | | Journal (article/letter/editorial) | | T. McKenny Hughes, ~LA., F.R,.S., F.G.S.) 3. ' On an Altered Siliceous Sinter from Builth (Brecknockshire)...Vicarage, Reading; and Luke Williams, Esq., Mount Reid Mine, Mount Reid (Tasmania), were elected Fellows o~...such a height as to produce, with the e;Lp of snow, an almost ])erfect~ reproduction of a mushroom. Their...and it gave evidence on the upper surface of being an aged specimen, an inference which was supported...specimen had been found near the surface beneath an ancient building at Keswick, and that there was no |  | | Journal (issue) | | Keller FEATURE ARTICLES __________________ 166 An Era of Sweeping Change in Diamond and Colored Stone...moving products from mine to consumer. The main cover image was taken at the AnahÌ mine in Bolivia, a major...pink diamond from Argyle, courtesy of Rio Tinto; (4) an 11.16 ct sapphire from Madagascar, GIA Collection...akeller@gia.edu GEMS & GEMOLOGY FALL 2010 165 AN ERA OF SWEEPING CHANGE IN DIAMOND AND COLORED STONE...industry also witnessed significant changes. It saw an evolution in the way gems are mined and the manner |  | | Journal (issue) | | Ueber Heidelberg, W. Germany Olaf Medenbach Ruhr Universitat Bochum Bochum, W. Germany Eric Offermann Ariesheim...Sabelli & G. Brizzi Osarizawaite from the Silver Hill mine, Arizona ........................ 311 by C. S. Stolberg...tungsten mine, central Kazakhstan, U.S.S.R. The specimen was collected in 1982. The Aktschatau mine is among...of Golden State Mint, Mira Loma, Cali- RED CLOUD MINE SITE, YU M A COUNTY. ARIZONA WULFENITE, Red Ckud...Carl has recently turned his efforts to producing an excellent series of signed and numbered, hand-colored |  | | Book (edition) | | W. E. Ford (1932) A textbook of mineralogy, with an extended treatise on crystallography and physical...W. F. Hunt, and L. S. Ramsdell (1951) Mineralogy, an P. F. E. . . . introduction to the study of...Hawkins. Paul Ramdohr (1948) Klockmann's Lehrbuch der Mineralogie, neu herausgegeben von Paul Ramdohr,...Winchell (1951) Elements of optical mineralogy: An of minerals. 1. introduction to microscopic petrography;...directed are: of determinative min- eralogy, with an introduction on blowpipe analysis, 16th ed. L. Fleener |
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