 | Eeckhout, Sigrid G., Castañeda, Cristiane, Ferreira, Ana Cláudia M., Sabioni, Antônio C.S., de Grave, Eddy, Vasconcelos, Daniela C.L. (2002) Spectroscopic studies of spessartine from Brazilian pegmatites. American Mineralogist, 87 (10) 1297-1306 doi:10.2138/am-2002-1005 | Journal (article/letter/editorial) | | pages 1297–1306, 2002 Spectroscopic studies of spessartine from Brazilian pegmatites SIGRID G. EECKHOUT...Federal, Brazil 4 Department of Mining and Geology, Federal University of Paraíba, Paraíba, Brazil 5 Department...Federal University of Ouro Preto, Minas Gerais, Brazil 6 Department of Metallurgical and Materials Engineering...Federal University of Minas Gerais, Minas Gerais, Brazil ABSTRACT Mössbauer spectra (MS) at room temperature...stretching region were acquired for natural spessartine-almandine garnet samples from different Brazilian |  | | Journal (issue) | | 2000) natural pearls, formed within molluscs that do not produce nacre (Gutmannsbauer and Hanni, 1994;...found in the seas off the south-eastern USA to Brazil and N. subnodosus in the seas off western Central...Minas Gerais, Brazil 2. Department of Mining and Geology, Federal University of Paraíba, Brazil Abstract:...opaque, black or dark red melanite. New finds of spessartine in Namibia, Nigeria © Gemmological Association...Laboratory of Great Britain (Shigley et ah, 2000) and Brazil (Ferreira, 1997) have sparked renewed interest |  | | Journal (issue) | | ARTICLES 260 An Update on “Paraíba” Tourmaline from Brazil James E. Shigley, Brian C. Cook, Brendan M. Laurs...being mined in adjacent Rio Grande do Norte State. 278 pg. 261 Spessartine Garnet from Ramona, San...the bright orange garnets from this century-old pegmatite locality. NOTES AND NEW TECHNIQUES 296 Pink...corundum from Wyoming • Green kyanite from Bahia, Brazil • “Ruby Rock” cabochons • Tourmaline from Warner...of the publisher. ABOUT THE COVER The Ramona pegmatite district in southern California was the world’s |
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Alto Mirador pegmatite, Ermo, Carnaúba dos Dantas, Rio Grande do Norte, Brazil