 | Simmons, W. B., Pezzotta, F., Falster, A. U., Webber, K. L. (2001) Londonite, a new mineral species: the Cs-dominant analogue of rhodizite from the Antandrokomby granitic pegmatite, Madagascar. The Canadian Mineralogist, 39 (3) 747-755 doi:10.2113/gscanmin.39.3.747 | Journal (article/letter/editorial) | | ANALOGUE OF RHODIZITE FROM THE ANTANDROKOMBY GRANITIC PEGMATITE, MADAGASCAR WILLIAM B. SIMMONS§ Department...with rhodizite at Antandrokomby, a dike of granitic pegmatite in the Manandona valley, Antsirabe region...in the Betafo region south of Mahaiza, all in Madagascar. Londonite occurs in the inner zones and in miarolitic...Associated minerals include microcline, quartz, albite, tourmaline (elbaite – liddicoatite – schorl series)...calculated from an average of five analyses from Antandrokomby is: (Cs0.48K0.38Rb0.09Na0.03Ca0.02Mn0.01)⌺1 |  | | Report (issue) | | The Natural History Museum of Milan and its Madagascar Collection The Museo Civico di Storia Naturale... the museum began paleontologic fieldwork in Madagascar (upper Permian fauna and Jurassic and Cretaceous...fieldwork in Madagascar in 1996 in collaboration with other institu tions in Madagascar, Italy, and the...Pezzotta has spent a total of twenty nine months in Madagascar making geological-mineralogical surveys. In collaboration...both classic and new minerals and gemstones from Madagascar opened at the Natural History Museum in Milan |  | | Report (issue) | | 13.769(9) Z=2 X-ray Powder Pattern: Antandrokomby, Madagascar. 6.92 (100), 3.447 (80), 2.376 (35), 4...97 0.48 0.20 14.10 100.22 5.84 (1) Antandrokomby, Madagascar. (2) Do.; combined wet chemical analysis...microcline, albite. Distribution: Madagascar. Name: At the Antandrokomby pegmatite, on the Manandona River...River, Sahatany Valley, For the Manandona River, nearby the type locality in Madagascar. Type Material:...ece min¶erale (manandonite) des pegmatites de Madagascar. Bull. Soc. fr. Min¶eral., 35, 223{226 (in French) |  | | Journal (article/letter/editorial) | | bones. ..- RECENT MINING AT THE ANTANDROKOMBY PEGMATITE, MADAGASCAR J. W Nizamofl’ A. U.FalsteG’ F. Pezzotu...Earth Science Dept., Adrian, MI 49221. The Antandrokomby pegmatite is a steeply dipping dike located about...kilometers south of Antsirabe, in the Manandona Valley, Madagascar. The dike strikes approximately northeast...observed dimensions of the pegmatite are 350 x 1.2 meters. Geochemically, the pegmatite is classified within...a diverse suite of accessory minerals. Abundant albite occurred as both colorless crystals up to 2 cm |  | Pekov, I. V., Yakubovich, O. V., Massa, W., Chukanov, N. V., Kononkova, N. N., Agakhanov, A. A., Karpenko, V. Y. (2010) Londonite from the Urals, and new aspects of the crystal chemistry of the rhodozite-londonite series. The Canadian Mineralogist, 48 (2) 241-254 doi:10.3749/canmin.48.2.241 | Journal (article/letter/editorial) | | (both cotype localities) and Alabashka granitic pegmatite fields, Central Urals, Russia. All are Cs-dominant...structure-type, infrared spectrum, granitic pegmatite, Urals, Russia, Madagascar. Sommaire Ce travail porte sur...sodalite, spectre infrarouge, pegmatite granitique, Ourales, Russie, Madagascar. Introduction Rhodizite and...years of 20th century, rhodizite was found in Madagascar, where it is a relatively common mineral of many...localities in Madagascar. Both K- and Cs-dominant samples have been found in Madagascar pegmatites. Until |  | | Journal (article/letter/editorial) | | 1980). It occurs sparingly with axinite in a pegmatite near Butte, Montana, where it was originally misidentified...crystals to 10 cm across were found in the 527 pegmatite exposed in the Jensen quany, Riverside County...associated with adularia, apatite, pericline-twinned albite, and quartz. Danburite has also been collected...Norway. Danburite has been reported from several Madagascar localities. Large yellow crystals have been recovered...Andina; at Imalo south of Betafo; and Antandrokomby pegmatite (Nizamoff et al. 2000). Excellent danburite |  | | Journal (article/letter/editorial) | | Alabama, diamond, 239 Alaska mine, Colorado, 3 15 Albite. Maine, 4 12 Alexandrite, Hematitia, Minas Gerais...Antlerite, Utah, 244 Apatite, Bahia, Brazil, 38; Madagascar, 256; Michigan, 96; Ohio, 255 Aquamarine, Minas... Miguel Arrojado Ribeiro Listoa, 47 Arsenic, Madagascar, 256 Arsenopyrite, Colorado, 337; Maine, 412...Part 1,52-53 Dadsonite, Nevada, 128 Danburite, Madagascar, 256 Daniel Bonanza mine, Colorado, 3 11 Datolite...Estes Quarry, Cumberland County, Maine: A New Pegmatite Locality, W. B. Thompson, A. U. Falster, W. B |  | | Journal (issue) | | west. Butte is situated in the Summit Valley, an intermontane valley at an elevation of 1,800 meters (5...Marcosson, 1957). By the winter of 1864 the Summit Valley district (Butte’s original name) had been organized...Co. Unita Unrepresented Valdemere Valley East Valley Queen Valley West Venus Vesuvius Virginius Volunteer...mentioning here. By the mid-1890’s, the Summit Valley had been more or less denuded of vegetation by...Bow Creek provided the sole drainage within the valley watershed, it became a de facto sewage system for |  | | Journal (issue) | | across, and more. Exploitation of this remarkable pegmatite continued intermittently until 1937, when the...bed. lt proved to be topaz from a Precambrian pegmatite cutting coarse-grained reddish granites of the...photo. Spodumene, 9.5 cm, from Resplendor, Doce Valley, Minas Gerais, Brazil. Don and Laura Aaron photo...this in mind, I prefer gern crystals, mostly pegmatite specimens in a few farnilies ... but not always...aquamarine ("The Tuning Fork"), 5.2 cm, from the Shigar Valley, Gilgit-Baltistan, Pakistan. Paul Bordovsky photo |  | | Journal (issue) | | Rhodizite-Londonite from the Antsongombato Pegmatite, Central Madagascar Brendan M. Laurs, Federico Pezzotta...Process ratified • Alexandrite from Mananjary, Madagascar • Colorchange apatite from Kazakhstan • New emerald...68); and Steve Ulatowski of New Era Gems, Grass Valley, California, for the before-and-after sample of... RHODIZITE-LONDONITE FROM THE ANTSONGOMBATO PEGMATITE, CENTRAL MADAGASCAR By Brendan M. Laurs, Federico Pezzotta...gem-quality londonite is the Antsongombato pegmatite in central Madagascar, from which at least 300 carats of |  | | Journal (issue) | | Museum Toronto, Ontario Steven R. Morehead Green Valley, AZ Donald R. Peacor University of Michigan Ann...Regularly! Alpine Mineral Company Fine Alpine and Gem Pegmatite Minerals www.alpineminerals.com e-mail: kevin@alpineminerals...colored by copper. Cuprian elbaite from the Batalha pegmatite veins, unrecognized until the 1980’s, has become...though not of such high quality; and the Khan pegmatite near Rössing, Namibia, is also high in copper...local mining industry has focused on industrial pegmatite minerals, especially tantalite. Access is via |  | | Book | | numerous crystal pockets, associated with small albite crystals; the platy, flattened-rhombohedral ilmenite...Swiss hematite iron roses are quartz, ortboclase, albite, rutile, and zeolites (especially stilbite), whereas...resting on cavity linings of sharp, opaque white albite ("pericline") crystals emerged from Imilchil around...their circumferences, occur in matrix of white albite, sometimes with the brown zircon crystals. Evseev...acicular crystals of rutile (Weerth, 2004). Tonniq Valley, Skardu district, Gilgit-Baltistan [Northern Areas] |  | | Book (volume) | | yegorovite Na4[Si2O4(OH)2]2·7H2O from the Palitra pegmatite, Lovozero massif, Kola peninsula hydrated proton)...MgB6O7(OH)6·2H2O Locality: Chelkar salt dome, Aksai Valley, Aktobe region, Kazakhstan (type locality). Description:...MgB6O7(OH)6·2H2O Locality: Chelkar salt dome, Aksai Valley, Aktobe region, Kazakhstan (type locality). Description:...Locality: Ampanodiana North pegmatite, Tetezantsio-Andoabatokely Pegmatite Field, Andrembesoa Commune...Vakinankaratra Region, Antananarivo Province, Madagascar. Description: Grey grains from the association |  | 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) | | Mineralogical Magazine A. LaCroix, Mineralogie de Madagascar, 1922 P. Embry and Fuller Manual of New Mineral...Mohave and Cochise Cos., AZ; Elmore, Idaho, and Valley Cos., ID; Goldfield, Esmer- 444.2 Silver 3...Wallaroo and Burra-Burra, SA, Australia; Aniseed Valley, near Nelson, New Zealand. Shaba, Zaire; Broken...Brazil, and Czech Republic; minor deposits in Madagascar, Turkey, Romania, Germany, Austria, and Sri Lanka...mines in Keweenaw Co., MI; Cashin mine, Paradox Valley, CO; Michipicoten Is., Lake Superior, ON, Canada; |  | | Report (volume) | | Significance 317 Breccias and veins within granite or pegmatite 318 Occurrence and composition 318 Significance...Spositio, George H. Swihart, John A. Tossell, John W. Valley, David J. Waters. Assistance from John Jambor,...Kramer H (1957) Ginorite and sassolite from Death Valley, California. Am Mineral 42:56-61 Anthony JW, Bideaux...(1965) Crystal structure of reedmergnerite, a boron albite, and its relation to feldspar crystal chemistry...Gowerite, a new hydrous calcium borate, from the Death Valley region, California. Am Mineral 44:911-919 Erd RC | | | Report (volume) | | MATHEMATICAL CRYSTALLOGRAPHY 16 1986 570 J.W. Valley H.P. Taylor, Jr. J.R. O'Neil STABLE ISOTOPES IN...ememeenae es 317 Breccias and veins within granite or pegmatite.................c.sceceeeeee eeeeee318 OCCUEPENCE...Spositio, George H. Swihart, John A. Tossell, John W. Valley, David J. Waters. Assistance from John Jambor,...Kramer H (1957) Ginorite and sassolite from Death Valley, California. Am Mineral 42:56-61 Anthony JW, Bideaux...(1965) Crystal structure of reedmergnerite, a boron albite, and its relation to feldspar crystal chemistry |  | | Book | | SHAPE program available from Eric Dowty, 521 Hidden Valley Road, Kingsport, Tennessee, 37663, USA. The authors...60(1975), 161 (Abst.). Ivanitskii et ah, 1973. Albite, NaAlSigOg, 0 Trie. Vitreous/pearly white, bluish...Al)802o(OH)4*4H20, 0 Syst=? Monte Chiaro, Taro Valley, Italy. H=?, Dvv,=?, Dp=?, VHIE 08c. Veniale &...E Mon. Porcelanous white. Furnace Creek, Death Valley, Inyo Co., California, USA. H=4.5, Djj4= 2.88,...brown. Balangero serpentinite, Lanzo massif, Lanzo Valley, Piemonte, Italy. H=?, Djjj= 2.98, D(;= 3.098, |
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