 | | Journal (article/letter/editorial) | | described as a new species from Rouma Island, Los Archipelago, Guinea (Lacroix 1931). It was named in...supplied Lacroix with suites of samples from the Los peralkaline complex (Fontan and Martin 2017). Lacroix...cm wide, from the type locality, Rouma Island, Los Archipelago, Guinea. Donald Doell specimen, Peter Tarassoff...the serandite typelocality, Rouma Island in the Los Archipelago, Guinea, the rocks are peralkaline nepheline...catapleiite, leucophanite, and villiaumite for which Rouma Island is also the type locality (Fontan and Martin |  | Zubkova, N. V., Chukanov, N. V., Pekov, I. V., Schäfer, C., Yapaskurt, V. O., Pushcharovsky, D. Yu. (2015) Lanthanum-rich fluorbritholite-(Ce) from young alkaline volcanic rock of Eifel (Germany) and its crystal structure. Cation ordering in britholites. Doklady Earth Sciences, 464 (1) 936-939 doi:10.1134/s1028334x15090147 | Journal (article/letter/editorial) | | variety of fluorbritholite(Ce) from Rouma Island (Los archipelago, Guinea) were reported in 2001 [5]. Here...Dellen pumice mine near Mendig (Eifel volcanic region, RheinlandPfalz, Germany) [6]. This sample attracted...magnetite, clinopyroxene, hydroxycalciopyrochlore, calcite, and pseudomorphs of manganese oxides after acicular...Fluorbritholite(Ce) (Narich) Rouma Island, Los archipelago, Guinea Fluorcalciobritholite Khibiny, Kola...Narich variety of fluorbritholite(Ce) from Rouma Island [5] violates this regularity and shows equivalent |  | | Journal (article/letter/editorial) | | 550–600 cm–1 region and phosphate antisymmetric stretching modes in the 900–1200 cm–1 region. Also obvious...The afmite spectrum has multiple bands in the OH region, both sharp and broad. The sharp bands more likely...bonding with isolated H2O groups in the interlayer region. Afmite is closely related structurally to the...Natural History Museum of Los Angeles County, 900 Exposition Boulevard, Los Angeles, CA 90007, U.S.A....crystals up to 100 μm in diameter, enclosed in calcite and rarely fluorapatite and magnesioferrite. Heavy |  | Kampf, A. R., Mills, S. J., Merlino, S., Pasero, M., McDonald, A. M., Wray, W. B., Hindman, J. R. (2012) Whelanite, Cu2Ca6[Si6O17(OH)](CO3)(OH)3(H2O)2, an (old) new mineral from the Bawana mine, Milford, Utah. American Mineralogist, 97 (11) 2007-2015 doi:10.2138/am.2012.4181 | Journal (article/letter/editorial) | | Natural History Museum of Los Angeles County, 900 Exposition Boulevard, Los Angeles, California 90007...and H2O groups are also located in the interlayer region. The crystal structure of whelanite exhibits OD...the Los Angeles County Museum of Natural History (now known as the Natural History Museum of Los Angeles...(10 specimens) in the Natural History Museum of Los Angeles County under catalog numbers 15507–15516...tobermorite 11Å on rock containing andradite, bornite, calcite, chalcopyrite, quartz, and wollastonite. At the |  | | Book | | Mexico Pages 160-161: Elbaite crystals from the island of Elba, Italy Pages 244-245: Whewellite crystals...microcrystals of mica, calcite and fluorite, while detergents contain such mineral additives as calcite, dolomite...exhibited by such minerals as aragonite, chalcanthite, calcite, descloizite, goethite, graphite, hydrozincite...smithsonite. Above: Rhombohedral crystals of calcite with clear cleavage planes. Cleavage Cleavage................................... Talc Gypsum Calcite Fluorite Apatite Orthoclase Quartz Topaz Corundum | | | Book | | Mexico Pages 160-161: Elbaite crystals from the island of Elba, Italy Pages 244-245: Whewellite crystals...microcrystals of mica, calcite and fluorite, while detergents contain such mineral additives as calcite, dolomite...exhibited by such minerals as aragonite, chalcanthite, calcite, descloizite, goethite, graphite, hydrozincite...scale of hardness lfar leftI. Mineral Talc Gypsum Calcite Fluorite Apatite Orthoclase Quartz Topaz Corundum...fluorescent mineral gives the property its name), calcite, diamond, opal and halite. Fluorescence is caused |  | | Journal (volume) | | appearance of a group of cream to light brown calcite crystals in various wave lengths of light: visible...contain a variety of minerals, with analcime, calcite, laumontite and palygorskite being the most well-known...NaAlSi2O6·H2O Croft Quarry, Croft apparently filled with “calcite or quartz”…On closer examination the mineral showed...cube-like rhombohedra of chabazite [however, see the Calcite-2 section]. The analcime crystals attained a diameter...cream rhombs of calcite that were originally thought to be chabazite (see the Calcite-2 section). King |  | | Report (issue) | | constitue:p.ts, barium along the Rocky Mountain region than in the but only those essential to a proper...correction applied to be advisable in investigating a region, locality, or to the ferrous oxide in the most...determination of manpresence or absence in the region or in the various 1nagmas ~s of most iinportance...liability to error in alumina involved in the acetate region in its n.1ain features and a sufficient knowledge...that of carbon dioxide also when the presence of calcite or cancrinite or the altered condition of the rock |  | | Book | | mineralogical fame and significance, as in the case of the island of Laven in the Langesundfjord District of Norway...named Monteregie is now the current name of the region. he name Mont Saint-Hilaire is used interchangeably...what is now the Richelieu River and Lake Champlain region, Samuel de Champlain first named the mountain Mont...Monteregian Hills (see below) remained exposed as islands in the sea; sand beaches can be found on the mountain's...protecting the only remaining primeval forest in the region. THE EARLY SCIENTIFIC INVESTIGATIONS T he earliest |  | 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) | | Tuscon, Arizona. Barry Yampol: Oyster Bay, Long Island, New York. Victor Yount: Warrenton, Virginia. Josef...end members of isostruct ural series (e.g., the calcite group; see 14.1.1.1) or when several species have...given a different name and number. For example, calcite CaCOg (14.1.1.1) has a polymorph aragonite (14...Mineral Description and Feel 1 Tale 2 3 Gypsum Calcite 4 5 6 Fluorite Apatite Orthoclase a Quartz...amphiboles, pyroxenes, olivines, garnets, clays, calcite, dolomite, apatites, rutile, hematite, magnetite |
|
