 | | Journal (article/letter/editorial) | | plinian deposits of Agua de Pau volcano (Sao Miguel, Azores Islands) F. RIDOLFI1, A. RENZULLI1,*, P. SANTI1...fall deposits of Agua de Pau volcano (São Miguel, Azores Islands) are divisible into (1) silica-undersaturated...silica-saturated/oversaturated groups. The first group occurs in the pre-Fogo-A pyroclastic falls (15.2...syenites, the complex Zr-Ti silicate minerals, eudialyte and a laÊ venite-like mineral, crystallized interstitially... petrology, eudialyte, laÊ venite, REE-rich minerals, Agua de Pau, São Miguel, Azores. Introduction |  | | Book (edition) | | Al;[(OH) 4 IPO;(OH)l(PO4))'4Hi0 (8.D, turquoise group). Triclinic, PT, a,b,c = 7.39, 7.72, ll.34,a,p,y=99°46'...Northampton co., Pennsylvania, and from the Kobokobo quarry, near Kamituga, Dern. Rep. of Congo. EJM 23, 269-277...luster vitreous, streak white. Cleav- (8.D, mixite group). Hexagonal, P6/111, a,c = 13.55, age {001} perfect...Czech Rep. Ahrensite Fe2SiO4 (9.A, ringwoodite group). Cubic, FdJm, a= 8.16. d: 2.46(10) - 1.245(8) -...Bi)[CIJ(SO4) 3] (7.B, apatite supergroup, hedyphane group). Hexagonal, P6/m, a,c = 9.63, 6.88, Z = 2. d: 3 |  | | Book (volume) | | spectroscopy. Several examples are given below. Eudialyte-group minerals are trigonal zirconoand titanosilicates...threefold symmetry. CO32 -dominant minerals of this group with different occupation of N-sites, mogovidite...from 1,350 to 1,550 cm1 (Fig. 1.1). A cancrinite-group mineral kyanoxalite, Na7(Al6–5Si6–7O24)(C2O4)0.5–1·5H2O...Minerals Fig. 1.1 IR spectra of high-calcium eudialyte-group minerals from alkaline pegmatites of the Kovdor...first ammonium arsenate mineral of the autunite group uramarsite discovered in the Bota-Burum U deposit |  | | Book (edition) | | 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...the amphibole, mica, tourmaline, labuntsovite, eudialyte, and several other groups: The number of new mineral...registered in this book (e.g. in the amphibole group). For more detailed information see "Dana's System |  | Chukanov, Nikita V., Vigasina, Marina F., Shendrik, Roman Yu., Varlamov, Dmitry A., Pekov, Igor V., Zubkova, Natalia V. (2022) Nature and Isomorphism of Extra-Framework Components in Cancrinite- and Sodalite-Related Minerals: New Data. Minerals, 12 (6) 729 doi:10.3390/min12060729 | Journal (article/letter/editorial) | | and F− , are common for eight-layer, cancrinite-group minerals with an afghanite-type framework. Extra-Framework...Data. Minerals 2022, Keywords: cancrinite group; sodalite group; isomorphism; solid solutions; IR spectroscopy;...hexagonal, while three-layer minerals (sodalite group members) are cubic or pseudo-cubic. Compounds with...nepheline, aegirine, arfvedsonite, murmanite, eudialyte, HS− -bearing sodalite and natrolite. The empirical...sanidinite in the In den Dellen (Zieglowski) pumice quarry, 1.5 km north-east of Mendig, Laach Lake (Laacher |  | | Journal (issue) | | Northwest Mineral Micro Study Group MICRO PROBE SPRING, 2004 VOLUME IX, Number 9 SPRING MEETING ....have been working 011 building a web site for our group. Some progress has been made but my work schedule... a page on who we are. TIIis will describe the group and provide a history ofNWMMSG. A page will be dedicated...and editor. This wiJI free your own accounts from group business and the inevitable junk that is ever present...that where the flow came into contact with the pumice-like o lder rock, more chemicals were introduced |  | 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) | | 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...internally contradictory. 5A. Groups The term group refers to an aggregate or multiple (usually three...identical or closely similar structure and chemistry. A group may be named when there are several end members |  | | Book | | . . . . . . . . . . . . . . . . 2.3.3 Platinum-Group Elements . . . . . . . 2.4 Light Metals . . . ....and Dolomite . . . . . . . . . . . . 7.3 Tuff, Pumice, Perlite, Pozzulan, and Trass . 7.4 Feldspar, Quartz...an economic point of view it may be obvious to group deposits according to their metals. From a geological...veins. Of course, it is much more attractive to group deposits according to the most important processes...with a few exceptions (beryl, spodumene, zircon, eudialyte, garnierite, and so on), not suitable as ore because |  | | 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...1991). Simdeled, Aust-Agder. Early in 1999, in a quarry near S~ndeled, collectors opened a pocket containing...2000). PORTUGAL Montijos quarry, Monte Redondo, Leiria Estremadura. The Montijos gabbro quarry at Monte...EUROPE AUSTRALIA GREECE Portland Harbor Trust quarry, Cape Grant, Victoria. In the late 1970s and early |  | | Book | | Reflection spectra of PbCl2 single crystal (space group Pnma) obtained by light polarized parallel to a...may be observed in this interval too. The factor group method is regularly used for calculation of the...Ti–O 549–627 Tetragonal pyramid (lamprophyllite-group minerals, fresnoite, natisite, paranatisite) V...Al–O 550–630 Octahedron Al(OH)6 in ettringite-group minerals. Additionally, the band of O–Al–O bending...Si–O 720–760 Octahedron Si(OH)6 in ettringite-group minerals. Additionally, the band of O–Si–O bending |  | | Corporate Document (Series) | | 72 variety or invalid names, and 36 series and group names. All entries in the 1969 catalogue have been...Cambrian to Early Devonian sedimentary rocks; Mathinna Group Early Cambrian al/octhons: Ullramafic-mafic complexes...silicates Asbolite = asbolane Atacamite Augite Axinite (group) Azurite Barite Bastite = serpentine Beauxite =...Fluorite Franklinite Galenite = galena Garne.t (group) Garnet var. Aplome = andradite Gibbsite Genthite...Obsidian (a rock) Oligoclase = calcic albite Olivine (group) Orthoclase Osmiridium = mixture of iridium, osmium |  | | Book | | host world-class ore bodies of chromium, platinum group elements (PGE), vanadium, titanium and phosphorous...Mungall 331 vii viii Contents 9 Platinum-Group Element Deposits in Layered Intrusions: Recent Advances...contain world-class deposits of chromium, platinum group elements (PGE), and vanadium, metals that are vital...host world-class ore bodies of chromium, platinum group elements (PGE), and vanadium (Cawthorn et al. 2005)...the world’s largest concentrations of platinum group elements, from the giant Bushveld Complex in South |  | Stevens, John G., Khasanov, Airat M., Miller, J. W., Pollak, Herman, Li, Zhe - Eds. (2002) Mössbauer Mineral Handbook (2nd ed.) Mössbauer Effect Data Center, Asheville, NC. | Book (edition) | | Mossbauer Spectra and Iron Distribution in the Epidote-group Minerals E.Dowty, and M.M.Lindstrom, Am. Mineral...and EPR Spectra of Glauconite and Montmorillonite Group Minerals of the Norway-Greenland Basin D.Ghosh,...Hypersthenes from Selected Members of the Taupo Pumice Formation, New Zealand V.V.Korovushkin, R.N.Kuz'min...Spectroscopy in the Investigation of Kaolinite-group Minerals 81K019 J.I.Kunrath, C.S.Muller, and A.Vasquez...Content to Iron Species in the New Albany Shale Group I.Shinno, and S.Suwas, Prelim. Rep. Afr. Stud. (Nagoya |  | | Book | | Electric and magnetic vectors in polarized light 3.8.2 Group theoretical interpretation of gillespite polarized...Spectra of orthosilicates 5.4.1 Garnet group 5.4.2 Olivine group 5.4.2.1 Background 5.4.2.2 Olivine crystal...4.3 Sillimanite 5.4.4.4 Yoderite 5.4.5 Epidote group 5.4.6 Miscellaneous orthosilicates and isostructural...minerals 5.5 Spectra of chain silicates: Pyroxene group 5.5.1 Background 5.5.2 Pyroxene crystal structure...pyroxenes 5.6 Spectra of chain silicates: Amphibole group 5.6.1 Background 5.6.2 Amphibole crystal structure |
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