 | | Journal (article/letter/editorial) | | 1277–1296 The Geology and Isotope Geochemistry of the Talc Deposits of Puebla de Lillo (Cantabrian Zone,... Northern Spain) FERNANDO TORNOS† Instituto Tecnológico Geominero de España, Azafranal 48, 37001 Salamanca...Salamanca, Spain AND BARUCH F. SPIRO Natural Environment Research Council, Isotope Geoscience Laboratory...United Kingdom Abstract The talc deposits of Puebla de Lillo (Cantabrian zone, Variscan belt of Iberia)...hydrothermal dolostones replacing Carboniferous limestones and are generally located adjacent to Ordovician quartzites |  | | Book (volume) | | Europe Volume 4/5: Southwest and Eastern Europe, with Iceland Southwest and Easzern'Europe, with Iceland...Society and the Institution of Mining and Metallurgy publication on the ferrous, non-ferrous and non-metallic...Europe by J. Agard and A. Emberger and the following national chapters: France and Luxembourg by J. Bouladon...Bouladon Spain by F. Vazquez Guzman Portugal by D. Thadeu Italy by P. Zuffardi European part of the U...Turkey by G.N. Sagiroglu Iceland by F. Siguri!sson and H. Torfason Anyone who has tried to gather information |  | | Book | | pierres précieuses des et des COLLECTION L’AMATEUR DE NATURE Sous la direction d’Alain Foucault, en partenariat...maquette et mise en pages : Yves Tremblay Maquette de couverture : Pierre-André Gualino Illustrations intérieures...gemmes… ……………………………………… 43 Les collections de minéraux et de gemmes… …… 55 Comment se forment les minéraux...leurs cristaux se combinent. Leur habit peut varier de cristaux individuels bien formés et isolés à des...des constructions bien plus complexes. Des grilles de classification Habits les plus fréquents Compact |  | | Book | | iimoriite-(Y) occurs at Trimouns as colorless, pink and pale brown, translucent to transparent, tabular microcrystals...microcrystals on matrix of white dolomite, and rarely as doubly terminated crystals to I cm floating...quartz veins in a variety of metamorphic, plutonic and pegmatitic environments. In the mid- l 970s, local...quartz on a ridge had once been mined for quartz, and large ilmenite masses could be seen on the old dumps...towns of Amity and Edenville, large, fine crystals of spine!, titanite, amphibole and pyroxene have been |
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Respina Mine, Fuentes de Respina, Puebla de Lillo, León, Castile and Leon, Spain