KUBERNÁTOVÁ, Monika and Jan CEMPÍREK. Crystal chemistry of natural Pb-rich tourmalines. In 3rd International Conference on Tourmaline (TUR 2021, Elba, Italy). 2021. ISSN 0369-6243.
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Basic information
Original name Crystal chemistry of natural Pb-rich tourmalines
Authors KUBERNÁTOVÁ, Monika and Jan CEMPÍREK.
Edition 3rd International Conference on Tourmaline (TUR 2021, Elba, Italy), 2021.
Other information
Original language English
Type of outcome Conference abstract
Field of Study 10504 Mineralogy
Country of publisher Italy
Confidentiality degree is not subject to a state or trade secret
WWW URL
Organization unit Faculty of Science
ISSN 0369-6243
Tags International impact, Reviewed
Changed by Changed by: Mgr. Monika Kubernátová, učo 460456. Changed: 3/1/2023 21:47.
Abstract
Lead is one of the cations with a large ionic radius (1.35 Å) and should therefore enter the tourmaline structure as a divalent cation Pb2+ at the nine-coordinated X‑site. The lead contents typically found in tourmaline are between tens and hundreds of ppm. The observed paragenetic relationships indicate that the Pb-enrichment in tourmaline is related to both albitization of amazonite (in Minh Tien) and its hydrothermal alteration (all studied localities). Formation of Pb-rich tourmaline is not restricted to Ca-rich systems (and Pb- Ca-1 exchange) and takes place also in Na,Li,F-rich tourmalines. Hydrothermal tourmalines may locally reach compositions dominated by the theoretical Pb-analogue of fluor-liddicoatite.
Links
GA19-05198S, research and development projectName: Greisenizace a albitizace - geologické procesy s potenciálem koncentrovat některé kritické suroviny pro moderní technologie (Acronym: GREISEN)
Investor: Czech Science Foundation
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