RT Journal Article T1 Nota preliminar sobre la presencia de turmalinitas estratiformes en el Ordovícico Inferior de Latedo (NO de Zamora) A1 Fernández Fernández, A. A1 Moro Benito, M. C. AB In this paper, the geological, texto-structural, mineralogical and chemical features of the stratiforme tourmalinites from the Lower Ordovician volcano-sedimentary Cabeza de las Viñas Formation (Alcañices Synforme), are given. According to these data, it is suggested that these tourmalinites has been originated by regional metamorphisme of the B-rich pelitic beds. The B were probably trought to the sediment by the hidrothermal solutions related with the underlayžng metabasaltic rocks existing in the studied area PB Sociedad Geológica de España YR 1991 FD 1991 LK http://hdl.handle.net/10272/18005 UL http://hdl.handle.net/10272/18005 LA spa DS Repositorio Institucional de la Universidad de Huelva RD 30 may 2026