 | Loun, Jan, Novák, Milan, Cempírek, Jan, Škoda, Radek, Vašinová Galiová, Michaela, Prokeš, Lubomír, Dosbaba, Marek, Čopjaková, Renata (2018) Geochemistry and secondary alterations of microlite from eluvial deposits in the Numbi mining area, South Kivu, Democratic Republic of the Congo. The Canadian Mineralogist, 56 (2) 203-220 doi:10.3749/canmin.1700091 | Journal (article/letter/editorial) | | OF MICROLITE FROM ELUVIAL DEPOSITS IN THE NUMBI MINING AREA, SOUTH KIVU, DEMOCRATIC REPUBLIC OF THE CONGO...within the ~1000–900 Ma old Kibara belt unit, Numbi mining area, South Kivu province of the Democratic Republic...fractionation: in the Mungwe pegmatite (lepidolite subtype) cassiterite . microlite-group minerals (microlite...columbite-group minerals (columbite–tantalite), wodginite þ ferrotapiolite; at the Misumari II pegmatite (berylcolumbite...microlite (the latter present only at the Mungwe pegmatite) are mostly homogeneous and compositionally uniform; |  | | Journal (article/letter/editorial) | | pages l,79-188,1992 Geochemical alteration of pyrochlore group minerals: Microlite subgroup Gnrconv R. LuurpxrN...replaced during the latter stagesof granitic pegmatite evolution by manganotantalite and fersmite or...r, and low a".. during alteration by evolved pegmatite fluids at 350-550'C and 2-4 kbar. Secondary(w...Ewing Microlite, the Ta-rich member of the pyrochlore group (1975). Primary alteration is hydrothermal...matites. waste in ceramic materials that contain pyrochlore as a INrnouucrroN 0003-{04x/92l0l 02-ol 79$02 |  | | Book | | nearly all metals and the inevitable closing of many mining operations, it is a matter of the industry's survival...decision, not only is a handy volume affered to the mining and processing community but also duplication of...another oxide, "yttria", from minerals found in the pegmatite at Ytterby, Sweden. Both supposed oxides were...Swedish ehernist Ekeberg in the eourse of analyzing pegmatite minerals from Ytterby, Sweden and Kimito, Finland...minerals from the same loeality, the farnaus pegmatite at Ytterby, Swcden. This faet stresses the geoehemieal |  | Černý, Petr, Chapman, Ron, Ferreira, Karen, Smeds, Sten-Anders (2004) Geochemistry of oxide minerals of Nb, Ta, Sn, and Sb in the Varuträsk granitic pegmatite, Sweden: The case of an “anomalous” columbite-tantalite trend. American Mineralogist, 89 (4) 505-518 doi:10.2138/am-2004-0405 | Journal (article/letter/editorial) | | Nb, Ta, Sn, and Sb in the Varuträsk granitic pegmatite, Sweden: The case of an “anomalous” columbite-tantalite...ABSTRACT The complex, petalite-subtype Varuträsk pegmatite in the Proterozoic rocks of northern Sweden is...is, as a whole, rather poor in Nb and Ta. The pegmatite consolidated in eight units, but the (Nb,Ta)-oxide...Consequently, the compositional trends of columbite-group minerals and cassiterite mimic those typically displayed...degree of cation order in the Varuträsk columbite-group minerals increases from early to late phases, and |  | | Book | | minerals fit into chemical groups, and for each group a few minerals are selected to illustrate their...Gilbert Gautier; Eric Greene, Treasure Mountain Mining; Leonard Himes, Minerals America; Shelley and Dan...silicate mineral, tho rite (ThSiO4 ), found in a pegmatite on an island in Langesund Fjord, southern Norway...uranium if higher prices justify reprocessing the mine tailings to recover some of the uranium that was...wastewater during environmental reclamation at a mine that has ceased production. The following statistical |  | | Journal (article/letter/editorial) | | include the Big Whopper and Big Mack petalite pegmatite systems which potentially represent the world's...F. W. Breaks Die wichtigsten Seltene-Element-Pegmatite von Ontario liegen im Gebiet des Separation Lake...zweitgroÈûte LithiumlagerstaÈtte dieses Typs. Die Pegmatite treten in zwei Gangsystemen in der NaÈhe des Separation...BeryllPegmatite, sowie komplexe Pegmatite des Petalit-Subtyps und, untergeordnet, Pegmatite È hnlichkeiten mit dem...gleichbleibendem Mn. Introduction Columbite-tantalite group minerals are ubiquitous in beryl-, complex-, albitespodumene- |  | | Book (edition) | | extensively rewritten by the book’s distinguished group of authors in the light of new research and important...Morocco; (center, left) wulfenite, San Francisco mine, Sonora, Mexico; (center) ameihyst, Veracruz, Mexico;...rnodochrosite, N’Chwaning mine, South Africa; (lower left, center) wulfenite, Red Cloud mine, Arizona; (lower...Encyclopedia of minerals Sagiiache County Pu blic Library Saguache , Colorado DEMCO For Reference Not to...Wendell E. Wilson Library Saguache County Public Saguache, Colorado VAN NOSTRAND REINHOLD New York | | | Book (edition) | | extensively rewritten by the book's distinguished group of authors in the light of new research and important...Morocco; (center, left) wulfen ite San Francisco mine, Sonora, Mexico; (center) amethyst, Veracruz, Mexico;...Mountains, Utah; (lower le ft) rhodochrosite, N'Chwaning mine, Sou th A frica; {lower left, center) wulfenite...Encyclopedia of minerals ~~cbe County Public Library Saguache, Colorado OEMCO For Refere nee Not to...Sagtiache Co1tntr Publlc I...ibran' Saguache, Colorado ~ VANNOSTRAND REINHOLD ~ - - - - N e w York |  | | Book (edition) | | Linopolis, Brazil, H Page 13: Gold, 35 mm.Eagle's est Mine, California, G Publi!>hed by Grdllit.u.o. Stefanikova43...to the chemical formula, allegiance to a mineral group, symmetry and crystal structure as well as the strongest...chemical formula, structure (crystal system, space group, and unit cell dimensions), and at least some other...site occupancy. The Sb members of the tennantite group (2.G) will serve as a good example: tetrahedrite...registered in this book (e.g. in the amphibole group). For more detailed information see "Dana's System |  | | Book (edition) | | Vesuvius, Italy (12, column 2) and SEMSEYITE, Julcani mine, Huancavelica, Peru (#3, column 2). Color, page...attempt a complete description of a small mineral group to uncover the unsatisfactory state of our present...well render the volume difficult to use by a large group of potential readers not familiar with structural/chemical...with the inherent problems of end-member names vs. group names and related aspects of nomenclature. Rather...spelling variants, descriptive names, mixtures, group names, chemical names, etc., found in the literature |  | | Book | | Author: ( ·u/lector .,· c;uide 10 the A,nphibole Group, 978-0-7643-4870-9 /11t1Dductio11 to Rudioocth•e...Guide lo the Zeolite Group. 978-0-7643-4675-0 Colll:'ctor} G11ide to the Feldspar Group, 978-0-7643-4329-2...is a fue l for reactors to produce electricity, mining operati ons. Robert Lau f presents here a highly...softvva re, using data files from the Boulder, Colorado; Pau la Piilonen, Candian Museum of An1erican...structures in three dimensions for a richer Mountain Mining; Leonard Himes and Michael Jacob, appreciation |  | | Journal (article/letter/editorial) | | sind Pegmatite mit seltenen Elementen eine h~iufigeErscheinung. Die charakteristischen Pegmatite einer...Frage. Die mit seltenen Erden angereicherten Pegmatite, die U, Th oder Mo fiihren, spielen eine untergeordnete...Basementst6rungen zu linden. Typisch sind Hochdruck-Pegmatite, die Spodumen fiihren und in Li, Rb, Be, Ta<>Nbangereichert...Basementst6rungen. In der Churchill Provinz liegen die Pegmatite (1800-1700 Mio a) verteilt in Griinsteingiirteln...tektonischer Baustile vor. Am hiiufigsten sind Pegmatite, die Be und Nb>Ta fiihren, eine Anreicherung in |  | 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) | | B. Hoover: U.S.G.S., Federal Center, Lakewood, Colorado. John M. Hughes: Dept. of Geology, Miami University...Louise Reif: U. S. G. S., Federal Center, Lakewood, Colorado. Charles B. Sclar: Dept. of Earth Sciences, Lehigh...Species containing more than one anion or anion group may be assigned to a separate class or may be assigned...specifies the atomic (cation to anion, or to anion group) ratio for the mineral. This and the remaining numbers...appropriate Dana number. When recognized, membership in a group is noted. Occasionally, the phrase “an inadequately |  | | Journal (article/letter/editorial) | | bismuthite, uraninite, rutile, cassiterite, but also of quartz and feldspar, as well as alterations to, and intergrowth...ixiolite, fersmite, microlite, betafite, and pyrochlore-group minerals have been demonstrated from many...such phases formed in the latemagmatic stage of pegmatite crystallization, they would have had little or...and Smeds 1996). Fractures originally filled with quartz or feldspar have been mined-out during HF-leaching...minerals from the Brown Derby Mine and the Quartz Creek Granite near Gunnison, Colorado. J Geophys Res 61:215–232 |  | | Journal (issue) | | in southwestern Fennoscandia: Backdrop to the pegmatite fields of southern Norway……………………………………………………………………………………...paleoclimate controls of lithium-cesium-tantalum (LCT) pegmatite genesis, exhumation, and preservation……………………...rediscovered pegmatite in the Stettin Complex, Wausau Syenite Compley, Marathon County, Wisconsin, USA……………………………………………...REIMER, W. Mineralogical study of the Gonçalo Li-pegmatite deposit, Portugal……………………………………..23 FALSTER,...luorapatite-quartz assemblage in the Emmons pegmatite, Greenwood, Oxford Co., Maine, USA: implication |  | | Book | | much biased by science with too little sense of mine for beauty) will keep his memory and work, alive...constituents the three rock-forming minerals feldspar, quartz and mica, which in places develop mega-crystals...material extracted from pegmatites is feldspar, quartz and mica, and only a tiny fraction of pegmatites...so as to render mining of these rare-element pegmatites feasible. The traditional mining of pegmatitic...aplitic rocks. In light of more than 1000 years of mining and an intensive study of the deeper parts of the |  | | Journal (volume) | | De Agostini website at: UK: AUS: SA: NZ: Rose quartz RO Ruby RU www.deagostini.co.uk www.deagostini...the Earth, Editorial and Design by T he Brown Reference Group pie ISBN O 7489 7935 2 NO i 07 04 18 Printed...Mexico. Eight-sided crystals from the Traversella mine, Piedmont, Italy. .&. crystals. It can also be...are often replaced by pyrite. FACT FILE PYRITE Group: Sulphides Crystal system: Cubic Habit: Cubes,...surface . u, tD -·3 se uar Rose quartz is an uncommon form of quartz that is often used in necklaces |
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Brown Derby No. 1, Brown Derby Mine, Quartz Creek Pegmatite Mining District, Gunnison County, Colorado, USA