Fall 1997 Gems & Gemology
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English-Spanish (Dictionnaire)
English−spanish (dictionnaire) English−spanish Dictionary éditions eBooksFrance www.ebooksfrance.com English−spanish Dictionary 1 English−spanish (dictionnaire) Adapted from : http://www.freedict.com/dictionary/index. -
Mineral Processing
Mineral Processing Foundations of theory and practice of minerallurgy 1st English edition JAN DRZYMALA, C. Eng., Ph.D., D.Sc. Member of the Polish Mineral Processing Society Wroclaw University of Technology 2007 Translation: J. Drzymala, A. Swatek Reviewer: A. Luszczkiewicz Published as supplied by the author ©Copyright by Jan Drzymala, Wroclaw 2007 Computer typesetting: Danuta Szyszka Cover design: Danuta Szyszka Cover photo: Sebastian Bożek Oficyna Wydawnicza Politechniki Wrocławskiej Wybrzeze Wyspianskiego 27 50-370 Wroclaw Any part of this publication can be used in any form by any means provided that the usage is acknowledged by the citation: Drzymala, J., Mineral Processing, Foundations of theory and practice of minerallurgy, Oficyna Wydawnicza PWr., 2007, www.ig.pwr.wroc.pl/minproc ISBN 978-83-7493-362-9 Contents Introduction ....................................................................................................................9 Part I Introduction to mineral processing .....................................................................13 1. From the Big Bang to mineral processing................................................................14 1.1. The formation of matter ...................................................................................14 1.2. Elementary particles.........................................................................................16 1.3. Molecules .........................................................................................................18 1.4. Solids................................................................................................................19 -
Crystal Structure of Bage [Ge3 O9] and Its Relation to Benitoite
------------- ., JOURNAL OF RESEARCH of the National Bureau of Standards - A. Physics and Chemistry Vol. 70A, No.5, September-October 1966 Crystal Structure of BaGe [ Ge3 0 9 Jand Its Relation to Benitoite I I C. Robbins, A. Perloff, and S. Block ~ ( Institute for Materials Research, National Bureau of Standards, Washington, D.C. 20234 I (May 23, 1966) BaGe[Ge30gl is trigonal, space group P3, with lattice constants a= 11.61, c=4.74 A, and Z =3. The structure was established by three·dimensional Patterson and electron density syntheses. Three·dimensional least·squares refinement resulted in a final R value of 6.8 percent (observed data only). The previously proposed structural relationship of this compound with benitoite, BaTiSbOg, has been confirmed. The structure can be considered as composed of Ge30g rings, in which the Ge is tetrahedrally coordinated, linked through octahedrally coordinated Ge atoms to form a three·dimen· sional Ge·O network. All Ge polyhedra are linked by corner sharing. The Ba ions occupy positions in channels of the network. Key Words: Barium tetragermanate, structure, benitoite, crystal, x·ray. 1. Introduction Robbins and Levin [lJ. Their data plus the space group information are: The synthesis of three germanates of formula type MeGe4 0g (Me = Sr, Pb, Ba) was reported by Robbins a=lL61 A w= L797±0.003 and Levin [lJ .1 A comparison of indexed powder c=4.74A E= 1.783 ± 0.003 patterns suggested that the compounds were isostruc S.G.=P3 p (obs) = 5.1 gcm - 3 turaL This was later confirmed by Eulenberger, Z =3 p (calc) = 5.12 gcm- 3 Wittman, and Nowotny [2]. -
Charlesite, a New Mineral of the Ettringite Group, from Franklin, New Jersey
American Mineralogist, Volume 68, pages 1033-1037,1983 Charlesite, a new mineral of the ettringite group, from Franklin, New Jersey PBre J. DuxN Department of Mineral Sciences SmithsonianInstitution, Washington,D. C. 20560 DoNero R. Peecon Department of GeologicalSciences University of Michigan, Ann Arbor, Michigan 48109 PBrnn B. LBavBNs Departmentof Geology Universityof Delaware, Newark, Delaware l97ll eNo JonN L. Beuu Franklin Mineral Museum Franklin. New Jersey 07416 Abstract Charlesite,ideally C4(AI,Si)z(SO4)2(B(OH)4)(OH,O)r2.26H2Ois a member of the ettrin- gite group from Franklin, New Jersey, and is the Al analogueof sturmanite. Chemical analysisyielded CaO27.3, Al2O3 5.1, SiO2 3.1, SO3 12.8,B2o33.2, H2O 48.6, sum : 100.1 percent.-Charlesiteis hexagonal,probable spacegroup P3lc, with a = ll.16(l), c = 21.21(2)4. The strongest lines in the X-ray powder difraction pattern (d, IlIo, hkl) are: 9.70,100, 100;5.58, 80, 110;3.855,80, ll4;2.749,70,304;2.538,70,126;2.193,70,2261 404. Charlesite occurs as simple hexagonal crystals tabular on {0001} and has a perfect {10T0}cleavage. The densityis 1.77glcm3 (obs.) and 1.79glcms (calc.). Optically, charlesite is uniaxial( -) with a : | .492(3)and e : 1.475(3).It occurswith clinohedrite,ganophyllite, xonotlite, prehnite, roeblingite and other minerals in severalparageneses at Franklin, New Jersey. Charlesite is named in honor of the late Professor Charles Palache. Introduction were approved, prior to publication, by the Commission Minerals and Mineral Names. I. M. A. The An ettringite-like mineral was first described from on New specimenwas divided into three portions. -
List of New Mineral Names: with an Index of Authors
415 A (fifth) list of new mineral names: with an index of authors. 1 By L. J. S~v.scs~, M.A., F.G.S. Assistant in the ~Iineral Department of the,Brltish Museum. [Communicated June 7, 1910.] Aglaurito. R. Handmann, 1907. Zeita. Min. Geol. Stuttgart, col. i, p. 78. Orthoc]ase-felspar with a fine blue reflection forming a constituent of quartz-porphyry (Aglauritporphyr) from Teplitz, Bohemia. Named from ~,Xavpo~ ---- ~Xa&, bright. Alaito. K. A. ~Yenadkevi~, 1909. BuU. Acad. Sci. Saint-P6tersbourg, ser. 6, col. iii, p. 185 (A~am~s). Hydrate~l vanadic oxide, V205. H~O, forming blood=red, mossy growths with silky lustre. Founi] with turanite (q. v.) in thct neighbourhood of the Alai Mountains, Russian Central Asia. Alamosite. C. Palaehe and H. E. Merwin, 1909. Amer. Journ. Sci., ser. 4, col. xxvii, p. 899; Zeits. Kryst. Min., col. xlvi, p. 518. Lead recta-silicate, PbSiOs, occurring as snow-white, radially fibrous masses. Crystals are monoclinic, though apparently not isom0rphous with wol]astonite. From Alamos, Sonora, Mexico. Prepared artificially by S. Hilpert and P. Weiller, Ber. Deutsch. Chem. Ges., 1909, col. xlii, p. 2969. Aloisiite. L. Colomba, 1908. Rend. B. Accad. Lincei, Roma, set. 5, col. xvii, sere. 2, p. 233. A hydrated sub-silicate of calcium, ferrous iron, magnesium, sodium, and hydrogen, (R pp, R',), SiO,, occurring in an amorphous condition, intimately mixed with oalcinm carbonate, in a palagonite-tuff at Fort Portal, Uganda. Named in honour of H.R.H. Prince Luigi Amedeo of Savoy, Duke of Abruzzi. Aloisius or Aloysius is a Latin form of Luigi or I~ewis. -
Birthstone Pamphlet Or Brochure Project
Birthstone Pamphlet or Brochure Project Task: You are a jewelry store owner who is having a tough time in this economy. If you don’t make a certain amount of sales this month it will be hard to pay the rent on your store and you will probably go out of business. To save your store, you looked toward your favorite stone for good luck. This stone has never failed you, ever, and gosh darn it, it won’t start now! This stone is your birthstone. You decide on a new marketing technique to save your store. This marketing technique is focused around your birthstone. Marketing technique: You decided to create an attractive pamphlet or brochure about your birthstone. What should your pamphlet or brochure include? 1. Identify your birthstone 2. Does your birthstone have a special meaning? 3. Is there a history behind your birthstone? 4. Does your birthstone have any mystical or mythical properties? (ex. Will it bring you strength, immortality, love, etc…) 5. How does the stone form? 6. What is the stone’s chemical composition? 7. Where is it most commonly found? 8. Is your birthstone a mineral? If so, what are its common properties? (streak, luster, hardness, etc) 9. If it is not a mineral, can you explain why? Samson’s Shoppe © Below is a list of birthstones according to the months of the year. January: garnet February: amethyst March: aquamarine April: diamond May: emerald June: pearl July: ruby August: peridot September: sapphire October: opal November: topaz December: turquoise Planning Guide: Part 1: A good website to use is: http://www.americangemsociety.org/birthstones 1. -
Mobile Earrings,See the Leading 2019 Emmy Award Jewelry Trends
302 Design Spotlight: Mobile Earrings Have you peeked inside this month’s Elle, Marie Claire, or Harper’s Bazaar magazines? You may have seen one of our fave looks from the Utility Collection, these fun and flexible mobile earrings. Modern Movement From brunch with the girls to a night out on the town, a cocktail dinner, or a weekend spent at home, the mobile earrings are versatile enough to be worn anywhere and for anything. Your customers can wear this playful and luxurious style as a solitary statement piece or wear it paired with a complementary #NeckMess. With a single whip of their head, they’ll steal a second glance from everyone around. Behind the Design Collaboration is at the heart of 302 Fine Jewelry. Our in- house fashion experts and design team frequently meet up to discuss new and existing designs, and this is how the mobile earrings were brought to life. Our jewelry team identified a need within theUtility Collection for a head-turning, movable style. After weeks of browsing, picking, and crafting a prototype from Stuller’s wide assortment of jewelry findings, the 302 design team got to work creating the fully functional earrings. Now this design has proven itself a standout style both inside and outside of Stuller. Grab your pair today in one of five metal qualities (silver, platinum, and 14-karat white, rose, and yellow gold) to have them ready for your fashion-savvy customers. Want to know more about 302 Fine Jewelry? Read our previous entry to discover three reasons to become a 302 partner, or start shopping the collections on our website. -
Little Luxuries That Inspire Sharing
little luxuries that inspire sharing FOR THE BRIDE All handmade in 14k gold vermeil, rhodium & 18k gold plated sterling, 14k gold fill and a variety of semiprecious stones, freshwater pearls and Swarovski crystals, we’ve designed the perfect pieces for your big day. Easily wearable everyday after, they’ll stand the test of time to become precious heirlooms in the years to come. semiprecious birthstone ring $53 #repin from pinterest via bianca bijoux pastel hoops $326 signature wrap hoops $96 birthstone threads $86 riata short earring $84 matching ring $77 belle necklace $60 belle earrings $60 pave CZ posts $53-$82 pretty posts $48-$74 peacock chandeliers $216 sofia coppola / sony pictures tresor Earrings $72 spiral hoops $120 mini peacocks $113 freshwater pearl posts $34 tresor Earrings $82 sunburst earrings $98 tresor necklace $163 tresor earrings $86 single birthstone necklace $58 22” coco necklace $158 pearl sunburst bracelet $154 2 CONTACT US: P 800.231.1878 E [email protected] W vivandingrid.com @ vivandingrid viv&ingrid weddings @vivandingrid FOR THE BRIDESMAIDS / SHOP BY COLOR With a wide range of colors in our semiprecious stones, Swarovski crystals and freshwater pearls, our collection of bridesmaid and flower girl jewelry has the perfect piece for everyone in your wedding party. pink bijoux ring $77 bijoux pastel hoops $178 birthstone wrap hoops $120 birthstone threads $101 birthstone necklace $58 birthstone rings rose vermeil $41-$53 pretty posts $74 freshwater pearls $34 cz posts $19 confetti posts $19 pearl -
Download the Scanned
American Mineralogist, Volume 77, pages 670475, 1992 NEW MINERAL NAMES* JonN L. J,Annson CANMET, 555 Booth Street,Ottawa, Ontario KIA OGl' Canada Abswurmbachite* rutile, hollandite, and manganoan cuprian clinochlore. The new name is for Irmgard Abs-Wurmbach, in recog- T. Reinecke,E. Tillmanns, H.-J. Bernhardt (1991)Abs- her contribution to the crystal chemistry, sta- wurmbachite, Cu'?*Mnl*[O8/SiOo],a new mineral of nition of physical properties ofbraunite. Type the braunite group: Natural occurrence,synthesis, and bility relations, and crystal structure.Neues Jahrb. Mineral. Abh., 163,ll7- material is in the Smithsonian Institution, Washington, r43. DC, and in the Institut fiir Mineralogie, Ruhr-Universitlit Bochum, Germany. J.L.J. The new mineral and cuprian braunit€ occur in brown- ish red piemontite-sursassitequartzites at Mount Ochi, near Karystos, Evvia, Greece, and in similar quartzites on the Vasilikon mountains near Apikia, Andros Island, Barstowite* Greece.An electron microprobe analysis (Andros mate- C.J. Stanley,G.C. Jones,A.D. Hart (1991) Barstowite, gave SiO, 9.8, TiO, rial; one of six for both localities) 3PbClr'PbCOr'HrO, a new mineral from BoundsClifl 0.61,Al,O3 0.60, Fe'O, 3.0,MnrO. 71.3,MgO 0.04,CuO St. Endellion,Cornwall. Mineral. Mag., 55, l2l-125. 12.5, sum 97.85 wto/o,corresponding to (CuStrMn3tu- Electron microprobe and CHN analysis gavePb75.47, Mgoo,)", oo(Mn3jrFe|jrAlo orTif.[nCuStr)", nrSi' o, for eight (calc.)6.03, sum 101.46wto/o, cations,ideally CuMnuSiO'r, the Cu analogueof braunite. Cl 18.67,C l.Iz,H 0.18,O to Pb.orClrrrCr.or- The range of Cu2* substitution for Mn2' is 0-42 molo/oin which for 17 atoms corresponds The min- cuprian braunite and 52-93 molo/oin abswurmbachite. -
Transfers Young, Stephanie Lynne, Chalfont St
The Journal of Gemmology2010 / Volume 32 / Nos. 1–4 The Gemmological Association of Great Britain The Journal of Gemmology / 2009 / Volume 31 / No. 5–8 The Gemmological Association of Great Britain 27 Greville Street, London EC1N 8TN T: +44 (0)20 7404 3334 F: +44 (0)20 7404 8843 E: [email protected] W: www.gem-a.com Registered Charity No. 1109555 Registered office: Palladium House, 1–4 Argyll Street, London W1F 7LD President: Prof. A. H. Rankin Vice-Presidents: N. W. Deeks, R. A. Howie, E. A. Jobbins, M. J. O'Donoghue Honorary Fellows: R. A. Howie Honorary Life Members: H. Bank, D. J. Callaghan, T. M. J. Davidson, J. S. Harris, E. A. Jobbins, J. I. Koivula, M. J. O'Donoghue, C. M. Ou Yang, E. Stern, I. Thomson, V. P. Watson, C. H. Winter Chief Executive Officer: J. M. Ogden Council: J. Riley – Chairman, A. T. Collins, S. Collins, B. Jackson, C. J. E. Oldershaw, L. Palmer, R. M. Slater Members’ Audit Committee: A. J. Allnutt, P. Dwyer-Hickey, J. Greatwood, G. M. Green, J. Kalischer Branch Chairmen: Midlands – P. Phillips, North East – M. Houghton, North West – J. Riley, Scottish – B. Jackson, South East – V. Wetten, South West – R. M. Slater The Journal of Gemmology Editor: Dr R. R. Harding Assistant Editor: M. J. O’Donoghue Associate Editors: Dr A. J. Allnutt (Chislehurst), Dr C. E. S. Arps (Leiden), G. Bosshart (Horgen), Prof. A. T. Collins (London), J. Finlayson (Stoke on Trent), Dr J. W. Harris (Glasgow), Prof. R. A. Howie (Derbyshire), E. A. Jobbins (Caterham), Dr J. -
General Index
CAL – CAL GENERAL INDEX CACOXENITE United States Prospect quarry (rhombs to 3 cm) 25:189– Not verified from pegmatites; most id as strunzite Arizona 190p 4:119, 4:121 Campbell shaft, Bisbee 24:428n Unanderra quarry 19:393c Australia California Willy Wally Gully (spherulitic) 19:401 Queensland Golden Rule mine, Tuolumne County 18:63 Queensland Mt. Isa mine 19:479 Stanislaus mine, Calaveras County 13:396h Mt. Isa mine (some scepter) 19:479 South Australia Colorado South Australia Moonta mines 19:(412) Cresson mine, Teller County (1 cm crystals; Beltana mine: smithsonite after 22:454p; Brazil some poss. melonite after) 16:234–236d,c white rhombs to 1 cm 22:452 Minas Gerais Cripple Creek, Teller County 13:395–396p,d, Wallaroo mines 19:413 Conselheiro Pena (id as acicular beraunite) 13:399 Tasmania 24:385n San Juan Mountains 10:358n Renison mine 19:384 Ireland Oregon Victoria Ft. Lismeenagh, Shenagolden, County Limer- Last Chance mine, Baker County 13:398n Flinders area 19:456 ick 20:396 Wisconsin Hunter River valley, north of Sydney (“glen- Spain Rib Mountain, Marathon County (5 mm laths donite,” poss. after ikaite) 19:368p,h Horcajo mines, Ciudad Real (rosettes; crystals in quartz) 12:95 Jindevick quarry, Warregul (oriented on cal- to 1 cm) 25:22p, 25:25 CALCIO-ANCYLITE-(Ce), -(Nd) cite) 19:199, 19:200p Kennon Head, Phillip Island 19:456 Sweden Canada Phelans Bluff, Phillip Island 19:456 Leveäniemi iron mine, Norrbotten 20:345p, Québec 20:346, 22:(48) Phillip Island 19:456 Mt. St-Hilaire (calcio-ancylite-(Ce)) 21:295– Austria United States -
Reflective Index Reference Chart
REFLECTIVE INDEX REFERENCE CHART FOR PRESIDIUM DUO TESTER (PDT) Reflective Index Refractive Reflective Index Refractive Reflective Index Refractive Gemstone on PDT/PRM Index Gemstone on PDT/PRM Index Gemstone on PDT/PRM Index Fluorite 16 - 18 1.434 - 1.434 Emerald 26 - 29 1.580 - 1.580 Corundum 34 - 43 1.762 - 1.770 Opal 17 - 19 1.450 - 1.450 Verdite 26 - 29 1.580 - 1.580 Idocrase 35 - 39 1.713 - 1.718 ? Glass 17 - 54 1.440 - 1.900 Brazilianite 27 - 32 1.602 - 1.621 Spinel 36 - 39 1.718 - 1.718 How does your Presidium tester Plastic 18 - 38 1.460 - 1.700 Rhodochrosite 27 - 48 1.597 - 1.817 TL Grossularite Garnet 36 - 40 1.720 - 1.720 Sodalite 19 - 21 1.483 - 1.483 Actinolite 28 - 33 1.614 - 1.642 Kyanite 36 - 41 1.716 - 1.731 work to get R.I. values? Lapis-lazuli 20 - 23 1.500 - 1.500 Nephrite 28 - 33 1.606 - 1.632 Rhodonite 37 - 41 1.730 - 1.740 Reflective indices developed by Presidium can Moldavite 20 - 23 1.500 - 1.500 Turquoise 28 - 34 1.610 - 1.650 TP Grossularite Garnet (Hessonite) 37 - 41 1.740 - 1.740 be matched in this table to the corresponding Obsidian 20 - 23 1.500 - 1.500 Topaz (Blue, White) 29 - 32 1.619 - 1.627 Chrysoberyl (Alexandrite) 38 - 42 1.746 - 1.755 common Refractive Index values to get the Calcite 20 - 35 1.486 - 1.658 Danburite 29 - 33 1.630 - 1.636 Pyrope Garnet 38 - 42 1.746 - 1.746 R.I value of the gemstone.