 | Cazañas, X., Melgarejo, J. C., Luna, J. A., Barrabí, H. (1998) El depósito volcanogénico de Cu-Zn-Pb-Au El Cobre, Cuba Oriental: estructura y mineralogía [The Cu-Zn-Pb-Au volcano genic deposit El Cobre, Western Cuba: structure and mineralogy]. Acta Geologica Hispanica, 33. 277-333 | Journal (article/letter/editorial) | | deeper levels the mineralized zone becomes thinner. Pyrite and chalcopyirite are the most abundant sulphides...grades to subparallel veins with chalcopyrite and pyrite; in the transition zone, very thick, high grade...can be occasionally found associated to sulfides (pyrite, chalcopyrite or sphalerite). Two types of sphalerite...two types of veins occur: quartz with sulfides (pyrite and chalcopyrite) and late, barren, quartz veins...each band associated to interstitial sulfides (pyrite and chalcopyrite) (Fig. 15a,b). Quartz crystals |  | | Report (volume) | | detailed and other studies of discrete areas around mines and prospects. In response to this need, W. P. Woodring...areal coverage is uneven. Some areas where many mines were studied, such as the area from Boniato northeastward...northeastward to the San Ricardo and Consuelo mines, are discussed in detail. Other areas, particularly...Esperancita, Guanaba, Manacas, and Valle de Manganeso mines; Central Miranda, Central Uni6n, and Central America;...Santiago-San Luis line with the Quinto and Ponupo mines. Sugar plantations in the area, chiefly in the Cauto |
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