Miniatura

Fitxers

690485.pdf (1.61 MB)

Tipus de document

Article

Versió

Versió publicada

Data de publicació

2019-06-14

Llicència de publicació

cc-by-sa (c) Galdos, R. et al., 2019
Si us plau utilitzeu sempre aquest identificador per citar o enllaçar aquest document: https://hdl.handle.net/2445/135739

Tourmaline records the hydrothermal events related to Zn-Pb mineralization around the Murguía diapir (Basque Cantabrian Basin, N Spain)

Títol de la revista

Autors

Director/Tutor

ISSN de la revista

Títol del volum

Recurs relacionat

https://doi.org/10.1344/GeologicaActa2019.17.5

Resum

The chemical composition of tourmaline has been used as a host environment register as well as a potential exploration tool for mineral deposits. In this study, the textural and chemical composition of tourmalines associated with Zn-Pb mineralizations around the Murguía diapir (Basque Cantabrian Basin, N Spain) are examined to verify if they record the mineralizing events in the area. Petrographically, tourmalines have been differentiated between inherited and authigenic. Colorless authigenic tourmalines are present as halos partially around green and pleochroic detrital grains or as individual crystals. Inherited and authigenic tourmalines are also chemically distinct. Authigenic tourmalines show different X-site occupancies, a Mg/(Mg+Fe) ratio above 0.77, and are aluminum rich and plot to the right of the povondraite-oxidravite join, above the schorl-dravite join. Inherited tourmalines plot within the alkaline (Na+K) group field, and have a Mg/(Mg+Fe) ratio below 0.77. These data suggest that authigenic tourmalines grew under reducing conditions, compatible with the hydrothermal event responsible for the ore deposition and caprock formation during the diapir ascent.

Matèries

Jaciments minerals, Jaciments hidrotermals, País Basc

Matèries (anglès)

Mineral deposits, Hydrothermal deposits, Basque Country

Citació

Col·leccions

Articles publicats en revistes (Mineralogia, Petrologia i Geologia Aplicada)

Citació

GALDOS, R., CANALS I SABATÉ, Àngels, CARDELLACH LÓPEZ, Esteve, PERONA MORENO, Joaquim. Tourmaline records the hydrothermal events related to Zn-Pb mineralization around the Murguía diapir (Basque Cantabrian Basin, N Spain). _Geologica Acta_. 2019. Vol. 17, núm. 5, pàgs. 1-9. [consulta: 30 de gener de 2026]. ISSN: 1695-6133. [Disponible a: https://hdl.handle.net/2445/135739]

Exportar metadades

JSON - METS

Compartir registre