 | | 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 |  | 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) | | granitic pegmatites of the Antsongombato Gem Mine, Betafo district, Madagascar, has been reinvestigated...three pegmatite mines in Madagascar. Laurs et al. (2002) reported that gem-quality rhodizite-londonite...are known only from the Antsongombato pegmatite in the Betafo region, Madagascar. The crystal chemistry...analysis of a Cs-rich rhodizite from Manjaka, Madagascar, and reported the formula: (Cs,K)Al4Be4B11O25(OH)4...K-dominant rhodizite from Ambatofinandrahana, Madagascar, by high-resolution electron microscopy (HREM) |  | | Journal (article/letter/editorial) | | granitic pegmatites of the Antsongombato Gem Mine, Betafo district, Madagascar, was employed in this study...mineralogy and the crystal chemistry of the Antsongombato pegmatites are in Pezzotta (2001, 2005). The...Chem Minerals (2011) 38:429–434 chemistry of pollucite, (Cs, Na)16Al16Si32O96nH2O: a natural microporous...Rhodizite-londonite from the Antsongombato pegmatite, Central Madagascar. Gems Gemol 38:326–339 Lazzari...Society, Washington, pp 445–519 Pezzotta F (2001) Madagascar—a mineral and gemstone paradise. Extra Lapis |  | | Journal (issue) | | _____________ 294 Chart of Commercially Available Gem Treatments Christopher P. Smith and Shane F. McClure...comprehensive, easy-to-use reference to the most common gem enhancements on the market today and their detectability...Rhodizite-Londonite from the Antsongombato Pegmatite, Central Madagascar Brendan M. Laurs, Federico Pezzotta...geology, mining, and gemological characteristics of gem-quality rhodizite-londonite from its only known source...REGULAR FEATURES _______________________________ 340 Gem Trade Lab Notes • “Piranha” agate • Surface-treated |  | | Journal (issue) | | Euclase, 2.3 cm, from the Gachalá mine, Guavió-Guatéque mining district, Boyacá Department, Colombia. Gail...cm, from Stak Nala, Haramosh Mountains, Skardu district, Gilgit-Baltistan, Pakistan. Zach Goodman collection;...Budd photo. Tanzanite, 7.6 cm, from the Merelani mine near Arusha, Tanzania. Barry & Beth Kitt collection;...Fluorite on quartz, 13 cm, from the Yaogangxian mine, Chenzhou Prefecture, Hunan Province, China. The...Spodumene (variety kunzite), 9 cm, from the Urucum mine, Galiléia, Minas Gerais, Brazil. Gus & Jane Eifler |  | | Book | | Mount Malosa, Chilwa alkaline province, Zomba district. "Illite" is the name of a series of incompletely...Springfield show ( 1995: 582). Madawaska [Faraday] mine near Bow Lake, Hastings County. Some of the world's...property of, the old Madawaska uranium mine (called the Faraday mine before 1964). The mineral assemblage...Cowgill, 1977). LATINAMERICA BRAZIL Jacupiranga mine, Sao Paulo. Among the crystallized minerals in the...Oblast. Alpine-type clefts in the famous Dodo quartz mine commonly contain ilmenite, occurring as lustrous |
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