 | | Journal (article/letter/editorial) | | MINERALENE I SAHATANY PEGMATITTFELT, MADAGASKAR Knut Edvard Larsen Introduksjon Madagaskar eller "Beryll-Iandet"...for seg et av de mest kjente pegmatittomradene, Sahatany pegmatittfelt og mineralene i de komplekse LeTpegmatittene...men gi en introduksjon. Geografisk beliggenhet Sahatany, som ogsa er navnet pa hovedelven som renner gjennom...ca. 25 km sl1lrvest for byen Antsirabe, hovedbyen i fylket Vakinankaratra pa innlandsplataet midt pa Madagaskar...generelle "Mt. Ibity", som er navnet pa det hl1lyeste toppen (2292 m. o. h.) i Ibity-massivet som avgrenser |  | 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) | | Canadian Mineralogist Vol. 39, pp. 747-755 (2001) LONDONITE, A NEW MINERAL SPECIES: THE Cs-DOMINANT ANALOGUE...RHODIZITE FROM THE ANTANDROKOMBY GRANITIC PEGMATITE, MADAGASCAR WILLIAM B. SIMMONS§ Department of Geology and...New Orleans, Louisiana 70148, U.S.A. ABSTRACT Londonite, (Cs,K,Rb) Al4 Be4 (B,Be)12 O28, is the Cs-dominant...dike of granitic pegmatite in the Manandona valley, Antsirabe region, and at Ampanivana and Antsongombato...Betafo region south of Mahaiza, all in Madagascar. Londonite occurs in the inner zones and in miarolitic |  | Novák, Milan, Cempírek, Jan, Gadas, Petr, Škoda, Radek, Vašinová Galiová, Michaela, Pezzotta, Federico, Groat, Lee A. (2015) Boralsilite and Li, Be-bearing "Boron Mullite" Al8B2Si2O19, Breakdown products of spodumene from the Manjaka pegmatite, Sahatany valley, Madagascar. The Canadian Mineralogist, 53 (2) 357-374 doi:10.3749/canmin.1400092 | Journal (article/letter/editorial) | | PRODUCTS OF SPODUMENE FROM THE MANJAKA PEGMATITE, SAHATANY VALLEY, MADAGASCAR MILAN NOVÁK§ Department of...from the elbaite-subtype Manjaka granitic pegmatite, Sahatany Valley, Madagascar. The pegmatite mineral...solidus/early subsolidus, granitic pegmatite, Manjaka, Madagascar. INTRODUCTION Boralsilite, Al16B6Si2O37...products of spodumene from the Manjaka pegmatite, Sahatany Valley, Madagascar, represents a novel genetic...origin. GEOLOGICAL SETTING The Manjaka pegmatite occurs in the Sahatany Valley pegmatite field, located in |  | | 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) | | Z=1 X-ray Powder Pattern: Manjaka, Madagascar; very similar to londonite. 2.983 (100), 2.440 (51), 3...Total [101.0] [99.79] (1) Ambatofinandrahana, Madagascar; B2 O3 by ICP, SiO2 6.23% assumed as quartz;...(B11.35 Be0.55 )Σ=11.90 O28.00 . (2) Andasy, Madagascar; by electron microprobe, average of seven analyses...alkali-rich granite pegmatites. Association: Londonite, elbaite, spodumene, beryl, béhierite, albite...Sarapulka and Shaitanka, Mursinka district, Ural Mountains, Russia. In Madagascar, from Antandrokomby, near Mt |  | Cempírek, Jan, Grew, Edward S., Kampf, Anthony R., Ma, Chi, Novák, Milan, Gadas, Petr, Škoda, Radek, Vašinová-Galiová, Michaela, Pezzotta, Federico, Groat, Lee A., Krivovichev, Sergey V. (2016) Vránaite, ideally Al16B4Si4O38, a new mineral related to boralsilite, Al16B6Si2O37, from the Manjaka pegmatite, Sahatany Valley, Madagascar. American Mineralogist, 101 (9) 2108-2117 doi:10.2138/am-2016-5686 | Journal (article/letter/editorial) | | boralsilite, Al16B6Si2O37, from the Manjaka pegmatite, Sahatany Valley, Madagascar Jan Cempírek1, Edward S. Grew2...in the elbaite-subtype Manjaka granitic pegmatite, Sahatany Valley, Madagascar. Boralsilite also occurs...diffusion rates. Keywords: Vránaite, boralsilite, Madagascar, pegmatite, new mineral, structural complexity...the Manjaka pegmatite, Sahatany Valley, Madagascar. Crystallographic study showed that the Manjaka mineral...diffraction data were recorded using a Rigaku R-Axis Rapid II curved imaging plate microdiffractometer with monochromatized |  | 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) | | 241 LONDONITE FROM THE URALS, AND NEW ASPECTS OF THE CRYSTAL CHEMISTRY OF THE RHODIZITE–LONDONITE SERIES...and must now be considered londonite. The crystal structure of londonite from Sarapulka was solved from...solid-solution system between rhodizite (K-dominant), londonite (Cs-dominant) and the hypothetical K- and Cs-free...species-defining elements are marked in bold. The rhodizite–londonite series is structurally related to pharmacosiderite-...complex, [Al4O4B12O24], in rhodizite and londonite. Keywords: londonite, rhodizite, cesium, microporous berylloborate |  | | Report (issue) | | Londonite (Cs, K, Rb)Al4Be4 (B, Be)12O28 c 2001-2005 Mineral Data Publishing, version 1 Crystal Data:...3205(3) Z=1 X-ray Powder Pattern: Antandrokomby, Madagascar (very similar to rhodizite). 2.9898 (100), 2...10 0.53 [100.07] [99.91] (1) Antandrokomby, Madagascar; by electron microprobe, average of five analyses...(B10.99 Si0.01 Be1.00 )Σ=12.00 O28.00 . (2) Manjaka, Madagascar; original total given as 99.92%, neglecting...Distribution: In Madagascar, from Antandrokomby, near Mt. Bity, Manandona Valley, Antsirabe district; at Antsongombato |  | Gatta, G. D., Vignola, P., McIntyre, G. J., Diella, V. (2010) On the crystal chemistry of londonite [(Cs,K,Rb)Al4Be5B11O28]: A single-crystal neutron diffraction study at 300 and 20 K. American Mineralogist, 95 (10) 1467-1472 doi:10.2138/am.2010.3554 | Journal (article/letter/editorial) | | 1467–1472, 2010 On the crystal chemistry of londonite [(Cs,K,Rb)Al4Be5B11O28]: A single-crystal neutron...9, France abstract The crystal chemistry of londonite, a rare Cs-bearing mineral [ideal chemical formula:...pegmatites of the Antsongombato Gem Mine, Betafo district, Madagascar, has been reinvestigated by means of wavelength...Cs+Rb(CsO2+RbO2 ≥ 8 wt%) makes the synthetic counterpart of londonite of interest as a potential neutron absorber or...a potential host for nuclear waste. Keywords: Londonite, crystal chemistry, crystal structure, single-crystal |  | | Journal (issue) | | Trapiche Emerald | Update on Rhodizite-Londonite from Manjaka, Madagascar | Sphalerite from Balmat, New York...https://gem-a.com/component/ edocman/media-kit. ii Cert no. TT-COC-002454 © 2023 Gem-A (The Gemmological...India and by Danet et al. (2012) in samples from Madagascar. Both authors described arrays of flat inclusions—...Inclusions in aquamarine from Ambatofotsikely, Madagascar. Gems & Gemology, 48(3), 205–208, https://doi...2023. New Production of Rhodizite-Londonite from Manjaka, Madagascar Since 2016, the renewal and approval |  | | Journal (issue) | | marketplace. 326 Rhodizite-Londonite from the Antsongombato Pegmatite, Central Madagascar Brendan M. Laurs,...gemological characteristics of gem-quality rhodizite-londonite from its only known source. REGULAR FEATURES...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...2002 325 RHODIZITE-LONDONITE FROM THE ANTSONGOMBATO PEGMATITE, CENTRAL MADAGASCAR By Brendan M. Laurs |  | | Journal (article/letter/editorial) | | Ambatovita, Mandrosonoro area, Fianarantsoa Province, Madagascar. R060583 reproduced with permission from the...(rubellite) from Manjaka, Sahatany Pegmatite Field, Antananarivo Province, Madagascar. Coin diameter is... Be2AlO4. Twinned crystals from the Ratnapura district, Sri Lanka. Photograph of sample R100130 reproduced...Joesmithite Khmaralite Leifite Leucophanite Liberite Londonite Lovdarite Magnesiotaaffeite-2N’2S Magnesiotaaffeite-6N’3S...symmetry. Rhodizite and its Cs-dominant analog londonite posed a particular problem. “Rhodizite” has been |  | | Journal (article/letter/editorial) | | ened tabular hexagonal crystal from Ratnapura District, Sri Lanka. Photograph of sample R090019 reproduced...(rubellite) from Manjaka, Sahatany Pegma te Field, Antananarivo Province, Madagascar. Coin diameter is...reported previously, volcanic rocks in the Eifel district, Germany (e.g., Schminke 2007, Lengauer et al...rocks no younger than 1050 Ma (Chimwala, Chipata district, Zambia, de Roever and Vrána 1985; Johnson et...PAPINEAU, D. F., RALPH, J. P., SVERJENSKY, D. A., & VALLEY, J. W. (2011): Needs and opportuni es in mineral |  | | Journal (article/letter/editorial) | | krystall med rosa turmalin (rubelli ) fra Manjaka (TL), Sahatany pegma elt, Antananarivo provins, Madagaskar...PAPINEAU, D. F., RALPH, J. P., SVERJENSKY, D. A., & VALLEY, J. W. (2011): Needs and opportuni es in mineral...Be(Fe )2Al6O12 2+ 19 STEIN 3-2014 Zeoli Be67 Londonite CsBe4Al4(B11Be)O28 Högbomite Be68 Lovdarite |  | | Journal (issue) | | ened tabular hexagonal crystal from Ratnapura District, Sri Lanka. Photograph of sample R090019 reproduced...(rubellite) from Manjaka, Sahatany Pegma te Field, Antananarivo Province, Madagascar. Coin diameter is...reported previously, volcanic rocks in the Eifel district, Germany (e.g., Schminke 2007, Lengauer et al...rocks no younger than 1050 Ma (Chimwala, Chipata district, Zambia, de Roever and Vrána 1985; Johnson et...PAPINEAU, D. F., RALPH, J. P., SVERJENSKY, D. A., & VALLEY, J. W. (2011): Needs and opportuni es in mineral |  | | Journal (issue) | | krystall med rosa turmalin (rubelli ) fra Manjaka (TL), Sahatany pegma elt, Antananarivo provins, Madagaskar...PAPINEAU, D. F., RALPH, J. P., SVERJENSKY, D. A., & VALLEY, J. W. (2011): Needs and opportuni es in mineral...Be(Fe )2Al6O12 2+ 19 STEIN 3-2014 Zeoli Be67 Londonite CsBe4Al4(B11Be)O28 Högbomite Be68 Lovdarite |  | | Book | | -~~1---------- 1960-2015 by Thom.as P. Moore Volume II I-Z Published by the Mineralogical Record, Inc....Mount Malosa, Chilwa alkaline province, Zomba district. "Illite" is the name of a series of incompletely...crystals of rutile (Weerth, 2004). Tonniq Valley, Skardu district, Gilgit-Baltistan [Northern Areas]. Beginning...region of Alpine-type clefts along the Torrniq Valley produced small numbers of ilmenite specimens reminiscent...The thin-tabular ilmenite crystals of the Torrniq Valley also form spherical aggregates ("closed roses") |  | | Book (edition) | | dept. (departement), dept. (departamento), dist. (district). Less common terms are not abbreviated, e.g....byssolite. Mono- coast of North America: Kobuk River Valley, Alaska, clinic, C2/m, a,b,c = 9.89, 18.20, 5.31...e.g. on Grossgreiner Mt., overlooking Zillertal Valley, Tirol, Austria, and at Passo di Vizze, Trentino-Alto...western Sayan Mts., white at Burumskoye, Vitim River Valley, all Siberia, Russia. In many localities in New...Ambohitromby and Tongfeno, S of Betafo, both Madagascar. Tabular crystals to 1 cm in Alpine fissures |  | | Book (edition) | | Cand CSPG Pennskiye gubemskiye wdomo.sti (Perm district ga=elle) Pl,ilosopl,ical Maga=ine Periodico de...Aktash mercury deposit, Kurai Range. Kosh-Agach district. Gomiy Altay. Russia. 58. 562. l'MR M" 111-129...Austria,NJMA 154.21-39. C\135. 219-246 Amphibolegroup II O Alumino-magnesiotaramite, Na(CaNa)(Mg·1) 3Ali(Si6Ali...Provvidenzakaolinquarry,Allumierc,Tolfa Mount district,Roma Province,Lazio,ltaly,NJMM 1976,40~17 (str...North Mcsa mine group, Temple Mountain mining district, Emery County, Utah, USA, CM 41, 959-980 (incl |  | | Report (volume) | | Spositio, George H. Swihart, John A. Tossell, John W. Valley, David J. Waters. Assistance from John Jambor,...£ in u ^r I § » § X K c • s e s ' S y .ii o •5 o & g i ! | o c •g f2 P qj s "C a — c ¿...^ /b l_ id u td u «> JEOC g2 ^«3 -oup. uaM iMo ii a (N O CQ a o ...3 r- « .S.S .E.E s - 5 f t J 3 S S - s Q Q ii O 3 S « 4S •X 1 i 2 CO B 3 § X .5 s • S...Kramer H (1957) Ginorite and sassolite from Death Valley, California. Am Mineral 42:56-61 Anthony JW, Bideaux |
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