 | | Journal (article/letter/editorial) | | CORDIERITE IN PEGMATITE NEAR MICANITE, COLORADO E. Wtu. Herwucn, UniversityoJ Michigan,Ann Arbor, Mi...Mi.chigan. ABsrRAcr The Climax pegmatite of the Micanite district in Colorado contains unusually large...garnet, zoisite, and tourmaline. Data on 50 other occurrences of pegmatitic and vein cordierite are summarized...is discussed. IurnooucttoN The Micanite pegmatite district iies acrossthe Park-Fremont County line in...recognizedcordieritein the Climax deposit. The pegmatite was studied by the writer in 1946 and 1949, at |  | | Book | | located near Pleystein our “scientific field camp”. I could not imagine to see him without a judo mat close...Berthold was superb and gained the highest honors. I got in contact with him, sharing the same passion...daily routine, he did not postpone my questions. I did not receive an answer from him, he provided me...to send me the scale bar for each photograph. So I left his legacy as it stands. Those images (if some...shared by Germany, the Czech Republic, Poland and Austria, has been focused on these industrial minerals |  | | Journal (issue) | | by K. L. Triscori & T. /. Campbell The Urucum pegmatite, Minas Gerais, Brazil...........................of the “rockhound”? And how might he be defined? I would say that the average rockhound is a dabbler...must assume that not every rockhound subscribes. I wouldn’t be surprised if the total U.S. rockhound...reverse it. A better question would be: is it too late? I suspect that in trying to revive rockhounding, we’d...sciences today? And (2) where do we go from here? I think the number of people who begin with a general |  | | Journal (issue) | | TR1 2DA Italy Renato & Adriana Pagano P.O. Box 37 I-20092 Cinisello Balsamo MI Japan Bon Earth Sciences...Show (also in Southern California). Personally I think I would prefer “The L.A. Show” as simple, short...every year we sell out of some of the old ones. When I first became editor, and exhorted people in this column...of fine elbaite, morganite, kunzite, and other pegmatite minerals in North America since their discovery...the major gem-producing and specimen-producing pegmatite regions in the world. Specimens from mines such |  | | Report (issue) | | Antero: The Peak of Colorado Beryl Collecting Mark I. Jacobson Page 14 Crystal Structure of Beryl and...William "Skip" Simmons and Alexander Falster, pegmatite specialists from the University of New Orleans...pegmatites. Most ore beryl occurs in massive pegmatite zones where crystals may reach considerable size...can be found adjacent to the core margin of the pegmatite and in Suggested Chromophores for Beryl Color-generating...diameter; Ohigashi, Japan; and in Dronning Maud Land, Antarctica, where meter long blue green crystals |  | | Book | | '···••::::•• .:·-·.... :::- ,• ._:~-~~t;~~~ f• I" .• !_._.,.• ' 1~~{}..'. •h'· .:, .? t:. ,u...~•::,fj'"' .: .-.:_'.: \ . I •'·· ., .• 11 • I ,111";\t:~~ne1 •i f l JJ 1atYON RALPH Moore's...-~~1---------- 1960-2015 by Thom.as P. Moore Volume II I-Z Published by the Mineralogical Record, Inc., Tucson...while supplies last, at www.MineralogicalRecord.com I IIMORIITE-(Y) EUROPE FRANCE Trimouns quarry, Luzenac...dolomite, and rarely as doubly terminated crystals to I cm floating in vugs of crystalline talc. Easily the |  | | Report (issue) | | Triassic deposits 31 Mineral localities 38 District of Columbia Mavtrl a Tirl IWlCfci JT XClilUl...XClilUl Q ~ __ ___ « - - : _ ___ .__ - -»-i- - 38 _ __ - - ________________ m~m~m~ m~ m~ «M »...Generalized cross section of a typical complex pegmatite of the Washington, D.C. area. Figure 5. Rhythmically...Maryland. <_ Titanite crystal (1.3 x 0.8 cm) in pegmatite from the Frost quarry, Woodstock, Maryland. Figure...quarry, near Ilchester, Maryland. Figure 36. Schorl crystals in Setters Formation quartzite at a small |  | Zhang, A. C., Wang, R. C., Jiang, S. Y., Hu, H., Zhang, H. (2008) CHEMICAL AND TEXTURAL FEATURES OF TOURMALINE FROM THE SPODUMENE-SUBTYPE KOKTOKAY No. 3 PEGMATITE, ALTAI, NORTHWESTERN CHINA: A RECORD OF MAGMATIC TO HYDROTHERMAL EVOLUTION. The Canadian Mineralogist, 46 (1) 41-58 doi:10.3749/canmin.46.1.41 | Journal (article/letter/editorial) | | TOURMALINE FROM THE SPODUMENE-SUBTYPE KOKTOKAY No. 3 PEGMATITE, ALTAI, NORTHWESTERN CHINA: A RECORD OF MAGMATIC...Koktokay No. 3 pegmatite, Altai, northwestern China, is a spodumene-subtype granitic pegmatite. In this study...altered country-rock, the contact zone, and the pegmatite. The tourmaline in the altered country-rock, Ca-...and Fe-rich dravite and in interstitial foitite–schorl solid solution. Tourmaline from the altered country-rock...between the country rock (metagabbro) and the pegmatite-forming melt or fluids derived from it. The chemical |  | | Book | | -::__ ::...,.;_! ... ~i~ ;..~: .: ! ;,;. . . -·,;;:;. --,:;-... ·"'l"- i~i~ ; ·::.. -; ,".,...illustrated with the most exceptional photographs. I would like to invite fellow Namibians and visitors...isactually blessedwith superb and scenicgeology. I do hope that this book can entice many peopleto visit...thecollectionof the Bergakademie. The the elementgermanium. I mentionthis mineralogyprofessorat the time, Kolbeck...Schneider was kind enough to sponsorthis book and I would like to take this opportunity to thank him for |  | | Journal (article/letter/editorial) | | ItO Gmchmica IT,Cmmochrmca Acta Vol. 53, pp. 91 I-916 Copyright 0 1989 Pergamon Press pk. Printed in...composition of the predominant boron host mineral in pegmatite, tourmaline, may be indicative of the range of...pegmatitic vein, a simple (unzoned) pegmatite pod, and two zoned lithium-pegmatite pods (see Appendix). The pod...vague process, or pneumatolysis. Today such occurrences are attributed to an evaporitic association for...the range of boron isotopic composition for occurrences of boron enrichment in metasediments where the |  | | Journal (issue) | | Mine, Cleveland (seearticle in this issue). David I. Green specimen and photo. SOUTH CROFTY MINE -------------...special issue, Minerals of the Peak District, jointly with the Peak District Mines Historical Sociecv, che...Cornwall and Devon, the Lake District, the Caldbeck Fells and the Peak District. Richard Bevins' ~1ineralog)...described in uch detail. MINERALCONFERENCE INERALOGY I 1 THE FIELD-1995 is the title of a one days mposium...Sarurday the 18th ~larch ac Oxford 'niver icy. The aim i co bring rogether peakers on a wide range of topics |  | | Journal (article/letter/editorial) | | GEOCHEMISTRY OF PHOSPHATES AND SILICATES IN THE SAPUCAIA PEGMATITE, MINAS GERAIS, BRAZIL: GENETIC IMPLICATIONS Maxime...Grand-Duché de Luxembourg Abstract The Sapucaia pegmatite is located in the well-known Eastern Brazilian...Minas Gerais, Brazil. Detailed mapping of the pegmatite body revealed five zones, showing distinct mineral...Phosphate masses found in the pegmatite contains two different assemblages: assemblage I is formed under oxidizing...alteration. In association I, three main transformation stages are observed: (i) the progressive oxidation |  | | Journal (article/letter/editorial) | | THE ELBAITE SUBTYPE OF RARE-ELEMENT GRANITIC PEGMATITE T. SCOTT ERCIT§ Canadian Museum of Nature, P.O...the elbaite subtype of rare-element granitic pegmatite has been encountered within the O’Grady batholith...granite and felsitic satellite dykes. On the whole, pegmatite bodies show a mildly NYF-type geochemical and...(elbaite-bearing). The melts parental to the pegmatite bodies were more voluminous, more alkaline, less...than is the norm for melts parental to LCT-type pegmatite. Differentiation of these melts sequentially produced |  | | Report (issue) | | PAPER 229 and prospects examz"ned in each district, some z"llustrated by maps .and structure sections...______________________ _ Latah County (A von mica district) ______________ _ Location and accessibility ___________________...prospects in Idaho-Continued Latah County (A von mica district)-Continued Fitzgerald property ___________________..._________________________ _ East pegmatite ________________________ _ Central pegmatite _____________________ _..._______________ _ Albite-quartz pegmatite ____________ _ Quartz-albite-muscovite-beryl pegmatite ____________________ |  | Siegel, Karin, Wagner, Thomas, Trumbull, Robert B., Jonsson, Erik, Matalin, Gabriella, Wälle, Markus, Heinrich, Christoph A. (2016) Stable isotope (B, H, O) and mineral-chemistry constraints on the magmatic to hydrothermal evolution of the Varuträsk rare-element pegmatite (Northern Sweden) Chemical Geology, 421. 1-16 doi:10.1016/j.chemgeo.2015.11.025 | Journal (article/letter/editorial) | | hydrothermal evolution of the Varuträsk rare-element pegmatite (Northern Sweden) Karin Siegel a, Thomas Wagner...Clausiusstrasse 25, 8092 Zurich, Switzerland b a r t i c l e i n f o Article history: Received 8 August 2015...online 25 November 2015 Keywords: Rare-element pegmatite Boron isotopes Tourmaline SIMS Fluid exsolution...evolution of the Varuträsk rare-element pegmatite (Skellefte District, Northern Sweden) has been investigated...and intermediate zones and a quartz core. The pegmatite displays considerable rare-element enrichment |  | | Journal (issue) | | ELBAITE crystal, 7.3 cm, from the Alto Ligonha district, Mozambique. American M useum of Natural History...Mineralogical Record i£ ‘g ? In this issue we present our first article on mineral occurrences in Mozambique...considerable coverage to Africa, including major occurrences in Egypt, Malawi, Madagascar, Morocco, Namibia...MADAGASCAR The Anjanabonoina pegmatite, 20:191-200 MALAWI Zomba district, 25:29-35, 38 MOROCCO Bou-Azzer...10:116-118 The Onganja mining district, 27:85-97 The Otavi Mountain Land, 28:109-130, 157 SOUTH AFRICA |  | | Journal (article/letter/editorial) | | 50, TANUARY FEBRUARY, 1965 THE CHIEF LITHIUM PEGMATITE, DEVILS HOLE, FREMONT COUNTY, COLORADO1 E. Wu...north of the well-known Devils Hote (lingneim) pegmatite (Hanley et aI.,1950).The depositlies approximatelr...Gulch, about I mile west of the junction betweenAnterope and E a s t G u l c h e s{ F i g . 1 ) . and...found in this area as early as 1956. The Chief pegmatite was exploredfor lithium and berl,llium in the...Arbor, Michigan. PEGMATITE CILIEF LITIIIUM 97 tooo Ft l CH]EF PEGMATITE I I \,, /" To Texos |  | | Journal (issue) | | VOLUME X X I SPRING 1985 The quarterly journal of the Gemological Institute of America SPRING 1985...Colombia Peler C. Keller, Iohn I. Koivula, and Gonzalo Ipra r 26 I . NOTES * AND NEW TECHNIQUES ... 40 Interesting Red Tourmaline from Zambia Iohn I. Koivula and C. W. Fryer REGULAR FEATURES 43 49...in the world-Minos Gerais, Brazil; the other with (I new locality for red tourmaline-Zcrmbia. The pendanr... Contributing Editor and Editor, G e m News John I. Koivula PRODUCTION STAFF Art Director Susan Kingsbury |  | | Journal (article/letter/editorial) | | trace-element data on quartz from the Borborema Pegmatite Province, northeast Brazil H. BEURLEN1,*, A. MÜLLER2...of the rare-element class from the Borborema Pegmatite Province in northeast Brazil were analysed for...degree of magma fractionation and analyses of pegmatite quartz cores can be used for exploration purposes...2002). In comparison, studies of the chemistry of pegmatite quartz are relatively rare (e.g. Schrön et al...fractures and weathered surfaces, and studies of pegmatite-quartz chemistry have become more frequent (e |  | | Journal (article/letter/editorial) | | associated with tin ore (Tables 1, 2) in granite, pegmatite, greisen, skarn, and hydrothermal rocks (Bortnikov...structure, the intermediate members of the schorl–schorl-elbaite– dravite–Ca-dravite–elbaite series were...are widespread in tin ore from the Kavalerovo district, Primorsky krai, where they pertain to the preore...OCCURRENCE Tin deposits of the Komsomolsk ore district, or OMS, which are frequently considered to be...Festival’ny tin deposits of the Komsomolsk ore district were studied in the most detail. Data on tourmalines |  | Shearer, C.K., Papike, J.J., Simon, S.B., Laul, J.C., Christian, R.P. (1984) Pegmatite/wallrock interactions, Black Hills, South Dakota: Progressive boron metasomatism adjacent to the Tip Top pegmatite. Geochimica et Cosmochimica Acta, 48 (12) 2563-2579 doi:10.1016/0016-7037(84)90306-5 | Journal (article/letter/editorial) | | 2563-2579 8 Pagamon Pta Ltd. 1984. Printed in USA Pegmatite/wallrock interactions, Black Hills, South Dakota:...Progressive boron metaso~tism adjacent to the Tip Top pegmatite C. K. SHEARER, J. J. PAPIKE, S. B. SIMON Institute...country rock and fluids derived fmm the Tip Top pegmatite has resulted in a series of boron enriched assemblages... Between unaltered quartz-mica schist to the pegmatite contact is a succession of four mineral assemblages:...follows: Q-B-K: T-Q: Dravite.bj sChorl.23Elbaite.os Buergerite,m Dravite.2, Schorl,n Elba&e.,, Buergeri& Observed |  | | Journal (article/letter/editorial) | | from the Scheibengraben beryl-columbite granitic pegmatite, Maršíkov, Czech Republic MILAN NOVÁK1,*, PETR...beryl-columbite pegmatite at Scheibengraben, Maršíkov, Northern Moravia, Czech Republic. The pegmatite consists...(facilitated by low contents of B, P and Li in the pegmatite melt) very likely maximized such an extensive...differential solubilities of columbite and tantalite in pegmatite melt. The apparent reversal of Nb-Ta and Fe-Mn...and Fe-Mn fractionation paths, beryl-columbite pegmatite, fluorine, Maršíkov, Czech Republic. Introduction |  | Baijot, Maxime, Hatert, Frédéric, Dal Bo, Fabrice, Philippo, Simon (2014) Mineralogy and petrography of phosphate mineral association from the Jocão pegmatite, Minas Gerais, Brazil. The Canadian Mineralogist, 52 (2) 373-397 doi:10.3749/canmin.52.2.373 | Journal (article/letter/editorial) | | PHOSPHATE MINERAL ASSOCIATIONS FROM THE JOCÃO PEGMATITE, MINAS GERAIS, BRAZIL Maxime BAIJOT, Frédéric...Grand-Duché de Luxembourg Abstract The Jocão pegmatite (or Cigana) is located in the well-known Eastern...masses were collected from the dumps of the pegmatite: association I is composed of dendritic triphylite, forming...intergrowths between garnet and triphylite of association I is also discussed. In the three associations, these...and secondary species are produced. In association I, the first hydrothermal alteration event was a weakly |  | | Journal (issue) | | from left: Fluorite, 6.7 cm, from the Weisseck, Austria. Collected by Reinhold Bacher; Reinhold Bacher...corner of the Fairfax quarry in Centreville, Virginia. I visited the quarry the next weekend. Nothing showed...from the wall. “A week or so later I loosened a large piece of what I thought was thaumasite from the base...inches on an edge and 6 inches in maximum dimension. I have since cleaned off the thaumasite to expose the...were removed from the mine, in addition to many lower-quality specimens. Harry J. Olson, a local mineral |  | | Journal (article/letter/editorial) | | big or small, which has helped us attain our goal—I dedicate this to all of you. Without your continued...Pocket (2006) ......................129 Black Pocket-I (2006) ................................129 Black Pocket-II...qualifies as one of the world’s greatest tourmaline occurrences. Discovered in the early 1940s, it has been intermittently...ground. ▲ ▲ It was a fateful day in early 2000 when I was shown a photo— mind you, just a 4 3 6-inch print—at...my home in Whitestone, New York. At 26 years old, I was in my eighth year as a professional mineral dealer |
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