| | Book (volume) | Spain by F. Vazquez Guzman Portugal by D. Thadeu Italy by P. Zuffardi European part of the U.S.S.R. by...Southwest Europe embraces France, Spain, Portugal and Italy. Each volume has an introductory chapter of the...Elisa and Dorinda Barruecopardo Golpejas or Bellita mine Morille-Martinamor El Cubito El Trasqui16n. Santa...Baixo Tejo and Sado Basins Silica sand deposits Italy by P. Zuffardi Introduction Geological setting Stratigraphy...provinces Polymetamorphic Caledonian-Hercynian-Alpidic province Northern Alpine chain Southern Alpine chain C | | | Book | often described mobilization of interspersed lead (galena), radiogenic in origin, into synaeresis cracks...within the same mineral. Lead, particularly as galena, exhibits an impressive mobilization capacity either...Manganese-iron-magnesium carbonate, sphalerite, galena, tetrahedrite, fine-grained pyrite and marcasite...attaining "ex-solutions" forms in the blende. Also, galena veinlets transecting sphalerite are often in turn...sphalerite, (interchangeable), bornite. 5. Tetrahedrite, galena, lead sulfosalts, silver sulfosalts, native bismuth |
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Valvassera mine, Valganna, Varese Province, Lombardy, Italy