 | | Book | | MineralogicalRecord.com I IIMORIITE-(Y) EUROPE FRANCE Trimouns quarry, Luzenac, Ariege. Operated for talc since the beginning...beginning of the 20th century, the Trimouns quarry became well known to collectors around 1990 for the...long (Marty, 2004 ). AFRICA widely in Litchfield County, where good crystals were taken from quartz veins...region (Brunet, I 977b ). NEW YORK Amity, Orange County. At many isolated collected sites between the towns...5 cm (Grice and Gault, 1981). CONNECTICUT Litchfield, Litchfield County. Ilmenite masses and crystals |  | Melcher, Frank, Graupner, Torsten, GĂ€bler, Hans-Eike, Sitnikova, Maria, Henjes-Kunst, Friedhelm, OberthĂŒr, Thomas, Gerdes, Axel, Dewaele, Stijn (2015) Tantalumâ(niobiumâtin) mineralisation in African pegmatites and rare metal granites: Constraints from TaâNb oxide mineralogy, geochemistry and UâPb geochronology. Ore Geology Reviews, 64. 667-719 doi:10.1016/j.oregeorev.2013.09.003 | Journal (article/letter/editorial) | | Neoproterozoic (1000-542 Ma) TE 4.3.1. Kibara Belt (east-central Africa) 4.3.1.1. Radiometric data CE P...granitic rare-element IP pegmatites. Columbite-group minerals (CGM) account for the majority of the current...rare-element pegmatites (ÄernĂœ et al., 2005). Columbite-group minerals (columbite-tantalite solid solution series;...members of the orthorhombic columbite-tantalite group (CGM) with the general formula AB2O6 (A = Fe2+,...subgroup with (Nb+Ta) > 2 Ti and Nb > Ta, and the microlite subgroup with (Nb+Ta) > 2 Ti and Nb < Ta. The |  | | Journal (issue) | | $324/three years, (Canada) $186/one year, (outside USA other than Canada) $265 for one year Subscription...you to become a Fellow and join this important group. Wear the medallion with pride! Contact Tom Gressman...orders@crystalclassics.co.uk | +44(0)1935 862673 The East Mineralogical volume 50, SeptemberâOctober, 2019...Gerais, Brazil. It was named in the 1920s by Leo Becker, a German citizen and mica dealer, in allusion...northern shore, SebastiĂŁo Fernandes Tourinho found a quarry of emeralds and another Figure 2. Location map |  | Hamid, Sarbast, Alfonso, Pura, Anticoi, Hernan, Guasch, Eduard, Oliva, Josep, Dosbaba, Marek, Garcia-Valles, Maite, Chugunova, Marina (2018) Quantitative Mineralogical Comparison between HPGR and Ball Mill Products of a Sn-Ta Ore. Minerals, 8 (4) 151 doi:10.3390/min8040151 | Journal (article/letter/editorial) | | columbite-(Mn) and tantalite-(Mn), as well as minor microlite and wodginite. The liberation in the product is...fraction of less than 250 ”m (51â52 wt % for columbite-group minerals (CGM) and 74â80 wt % for cassiterite) and...for other elements. The formulas for columbite-group minerals (CGM) were calculated on the basis of 24...Nb and Ta occur mainly in minerals of CGM. This group is constituted by a solid solution of columbite...1). Figure 2. Chemical composition of columbite-group minerals (CGM) from the Penouta open pit in the |  | | Book | | the 18th Antiquity in Beryl the Ancient 4 East, 9 Analysis, 11 Physical 50 Haiiy and His...Emeralds and Beryls as 157 Beryl Structure, Space Group and Symmetry Elements, Talismans, 95 159 Emeralds...Fusion Late 299 Synthesis, and Schlieren Chatham Emeralds, 304 342 Magmatic, Granitic Eppler...Carroll Embrey, Dr. Paris, Museum (Natural Chatham, British France; San Francisco, Campagne measure...New York, NY; Hoover, have CA; John Gerhard Becker, History), London, especially Donald M. Burt |  | | Book (volume) | | Duane L. Leavitt The Bennett Pegmatite, Oxford County, Maine . ........................................Moore Electron Microprobe Analyses for Crandallite-Group Minerals from Maine Pegmatites ...................permanent photographic exhibits in the northeastern USA. The Shaubs have been active in ornithological research...gratefully dedicated. Gene Foard (right) at Swamp #1 quarry, Topsham. Gene Foard speaking with Frank Perham...Gene Foard with Yan King, 1994 (left) at Nevel quarry, Newry. In Memoriam Gene Foord Gene [Eugene Edward] |  | | Book | | (with 21 Figures) . . . . . . 3 27 Pyrochlore Group Minerals from the Qaqarssuk Carbonatite Complex...C.A. Arrhenius observed an unknown minerat in a quarry located at Ytterby, near Stockholm, and worked...fractures in altered greenstones from San Benito County, California, is reported with 20.57 wt.% RE2 0...International Mineralogical Association (IMA). A group name, bastnaesite, for instance, is proposed for...element to the group name: bastnaesite-(La), bastnaesite-(Y) etc. Table 1 gives these group names with the |  | | Book | | minerals 294 Tantalum and niobium oxides 296 Microlite 298 Rare oxides 301 The carbonate class 302 Calcite...The magical all ure of the cuclase 407 The exotic group of the garnets 408 Garnets of the pyralspite series...diversified mica group 602 The clay mineral groufa 604 The tectosilicate subc ass 605 The feldspar group 608 The...Helvite 611 Scapolite 612 The surprising zeolite group 619 The large quartz family 624 Rock crystal 630...suggest, to many specialists, the migration of a group of Asian humans precious stones such as nephrite |  | Overstreet, W.C., Assegaff, A.B., Jambi, Mohammed, Hussain, M.A., Selner, G.I., Matzko, J.J. (1985) Reconnaissance geochemical exploration of the plutons of quartz monzonite and granite in the Jabal Lababa and Ar Rayth areas, southern Asir, Kingdom of Saudi Arabia. Open-File Report Vol. 1985 (85-8) US Geological Survey doi:10.3133/ofr858 | Report (issue) | | Peaks reach nearly 2,300 m in altitude 10 km to the east of the pluton, but in the vicinity of the pluton...Between these categories of peak strengths is a group exhibiting intermediate strength classed as minor...youngest) the Hali Group, the Baish Group, and the Bahah Group. Only the Hali Group of Ratte and Andreasen...intrusive granitoid plutons. The lower part of the Hali Group of Ratte and Andreasen in the area of figure 2 consists...UNCONFORMITY bhg BAHAH GROUP bgr BAISH GROUP PRECAMBRIAN his hlmc HAL I GROUP tills DESCRIPTION OF |  | | Book | | are defined by chemical composition, structural group, and crystal system, with one or two references...Si04) and fayalite (Fe 2 Si0 4 ) (see Olivine Group), group names, such as mica for all the minerals with...pyrite) and also to a group of minerals having the same structure pyrite group). kind of mineralogic...sense that does not refer to a mineral species or group proper, no special designating valid mineral species...2 4 ), a mineral species assigned to the spinel group because of its spinel structure; quartz syenite |  | | Book | | in Hainite-(Y) and Batievaite-(Y), Two Rinkite-Group Minerals from the Sakharjok Massif, Keivy Alkaline...rare earths, copper, phosphorus, niobium, platinum-group elements, and other critical metals. The continued...rare earths, copper, phosphorus, niobium, platinum-group elements, and other critical metals. The continuing...[5]. The region is also famous for its platinum-group-element (PGE) deposits, which are investigated by...in Hainite-(Y) and Batievaite-(Y), Two Rinkite-Group Minerals from the Sakharjok Massif, Keivy Alkaline |  | | Journal (volume) | | (Croatia) (Hungary) (Slovakia) (Greece) (Hungary) (USA) (Hungary) (Egypt) (Austria) (Romania) (Hungary)...(Hungary) (Hungary) (Hungary) (Croatia) (UK) (Slovakia) (USA) (Austria) (Romania) (Slovakia) (China) (Germany)...(Germany) (Poland) (Italy) (Czech Republic) (Romania/USA) (Germany) (Hungary) (Russia) (Czech Republic) (Japan)................................245 EG52 Platinum-group minerals in the new millennium....................Laboratory, Carnegie Institution, Washington DC, USA (rhazen@ciw.edu) The mineralogy of terrestrial planets |
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