| | Journal (article/letter/editorial) | Alabama 36849 cookrob@auburn.edu Euclase La Marina Mine, Municipio de Pauna Boyacá, Colombia E uclase...minerals after beryl and chrysoberyl. Exceptional euclase specimens appeared at the 2016 Tucson Gem and Mineral...selection of this issue’s Connoisseur’s Choice. Euclase, BeAlSiO4(OH), is a chemically simple nesosilicate...Lacking essential chromophores in its formula, euclase is ideally colorless with a white streak, but in... or pale to deep blue. It is not fluorescent. Euclase occurs only as crystals that belong to the monoclinic | | | Book | BARTORELLI ::• . . .. MINERALS & PRECIOUS STONES OF BRAZIL Sponsored by: VALE MINISTER.IO DA CULTURA ©...Crystal of multicolored tourmaline (84 x 26 mm), Lavra do Sapo, Ferruginha, Conselheiro Pena, Minas Gerais...(Camara Brasileira do Livro, SP, Brazil) Cornejo, Carlos .Minerals & precious stones of Brazil. Carlos Cornejo...pedras preciosas do Brasil Bibliography 1. Gemology 2. Geology 3. Minerals - Brazil 4. Minerals- Classification... Mineralogy 6. Mineralogy - Brazil - History 7. Precious stones - Brazil I. Bartorelli, Andrea. II. Title |
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