 | | 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...analcime, astrophyllite, eudialyte, catapleiite, leucophanite, and villiaumite for which Rouma Island is also |  | | Journal (article/letter/editorial) | | sites. Keywords: mosandrite, rinkite group, LĂ„ven Island, Norway. Sommaire La mosandrite, Ti(î,Ca,Na)3(Ca...from the nepheline syenite pegmatites on LĂ„ven Island, in Langesundsfjord district, the type locality... nepheline, sodalite, annite, catapleiite, astrophyllite, rosenbuschite, lĂ„venite, leucophanite, analcime...2009), and in a new mineral from Rouma island, Los Archipelago, Guinea, (Ca,Na,REE,)7(Nb,Ti)[Si2O7]2OF3...center but moved away from it and distributed over a region of space with appropriate distances to the âanionâ |  | | Journal (article/letter/editorial) | | 07P0.75)ÎŁ5.82O24(OH0.53F1.47)ÎŁ2.00 (from Los Islands, Guinea). The crystal-chemical formulae were calculated...unique and very broad band in the OH-stretching region at 3437 cmâ1, which is consistent with the ordering...previously refined samples. The second (hereafter called LOS) is similar in composition to one of the P63 samples...the ejectum (Della Ventura et al. 1999). Crystal LOS was found in specimen N. 130.61 of the mineralogical...Moreau et al. 1996) from the Rouma Island (Los Islands, Republic of Guinea). Associated minerals in the |  | | Book | | mineralogical fame and significance, as in the case of the island of Laven in the Langesundfjord District of Norway...petrology and shared her unpublished data on astrophyllite. Dr. Scott Ercit provided many helpful discussions...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 |  | 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...Creek, NT. In New Zealand, Hauraki Peninsula, North Island, and placer deposits in Nelson, Westland, Otago...Emperor mine, Vatukuola, Fiji. Mt. Kare, Papua New Guinea. In South America, Antioquia and Cauca, Colombia;...nm); weakly anisotropic. Bolshoi Anyui R.., Kolyma region, Russia, in gold-bearing alluvium. sm MZ 11(4):88(1989)...VHNjo9 = 260. R = 55.3 (540 nm). Magnetic. Kumak region, Southern Ural Mts., Russia, in quartz veins with |
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