MALÝ, Jakub, Milan NOVÁK and Jan CEMPÍREK. VESUVIANITE – POTENTIAL INDICATOR MINERAL OF MINERALIZED SKARNS? In New Minerals and Mineralogy in the 21st Century, International scientific symposium Jáchymov 2016. 2016. ISBN 978-80-7490-117-1.
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Basic information
Original name VESUVIANITE – POTENTIAL INDICATOR MINERAL OF MINERALIZED SKARNS?
Name in Czech VESUVIAN - POTENCÍALNÍ INDIKÁTOROVÝ MINERÁL MINERALIZOVANÝCH SKARNŮ?
Authors MALÝ, Jakub (203 Czech Republic, belonging to the institution), Milan NOVÁK (203 Czech Republic, guarantor, belonging to the institution) and Jan CEMPÍREK (203 Czech Republic, belonging to the institution).
Edition New Minerals and Mineralogy in the 21st Century, International scientific symposium Jáchymov 2016, 2016.
Other information
Original language English
Type of outcome Conference abstract
Field of Study 10500 1.5. Earth and related environmental sciences
Country of publisher Czech Republic
Confidentiality degree is not subject to a state or trade secret
WWW Book of abstracts, web: New Minerals and Mineralogy in the 21st Century, International scientific symposium Jáchymov 2016
RIV identification code RIV/00216224:14310/16:00088194
Organization unit Faculty of Science
ISBN 978-80-7490-117-1
Keywords (in Czech) VESUVIAN; SKARN; LA-ICP-MS; EMPA; STOPOVÉ PRVKY; LITHIUM; BERYLLIUM; BÓR; ZINEK; CÍN; BISMUT; REE
Keywords in English VESUVIANITE; SKARN; LA-ICP-MS; EMPA; TRACE ELEMENTS; LITHIUM; BERYLLIUM; BORON; ZINC; TIN; BISMUTH; REE
Tags EMPA, LA-ICP-MS, REE, trace elements, Vesuvian
Tags International impact
Changed by Changed by: Mgr. Jakub Malý, učo 372486. Changed: 3/10/2016 16:07.
Abstract
Vesuvianite is a typical mineral for contact metamorphic and metasomatic rocks – skarns, rodingites, skarnoids. Its composition depends on several factors – bulk composition of the intrusive rock and its metasedimentary host, composi-tion of reacting fluids, and PT-conditions. Vesuvianite structure is complex and accommodates a large number of various elements – its general formula is X19Y13Z18T0-5O68W10, where X = Ca, Na, Ln3+, Pb2+, Sb3+; Y = Al, Mg, Fe3+, Fe2+, Ti4+, Mn, Cu, Zn, As3+; Z = Si; T = B; and W = OH, F, Cl, O [1,2,3]. We studied chemical (major, minor and trace elements) com-position of vesuvianite from skarns at 5 selected localities from the Bohemian Massif. VESUVIANITE COMPOSITION The studied samples are compositionally heterogeneous with variable Fe/Mg ratio, Al/R2+ ratio, and variable contents of Ti, Na and F within each locality; core-to-rim zoning was locally observed (increase of Fe, Be, B, Zn, and Sn, decrease of Al, Mg, and F). Locality-specific change of compo-sition from primary to secondary vesuvianite generations is present; while a very distinct decrease in Fe/Mg is present at Žulová, the Nedvědice sam-ples show only a slight increase of Fe/Mg, decrease of Al/R2+ and increase of Ti/R2+ ratios (Fig. 2). IMPLICATIONS: Preliminary results on vesuvianite major and trace element compositions showed that vesuvianite has a potential to record compositional changes of reacting fluids, because a) its structure is versatile enough to include a wide range of ele-ments; including light elements (Li, Be, B), REE (Y and LREE), and especially metals and semi-metals (Zn, Bi, As, Sn, Sb), and b) recrystallizes during post-magmatic hydrothermal alteration, with modified composition in contents of both major and trace elements. Vesuvianite accommodates elevated amounts of Sn whereas its contents of W and Mo are very low; we suggest this is due to incompatibility of Mo6+ and W6+ with the vesuvianite structure.
Links
GA14-13347S, research and development projectName: Variabilita lehkých prvků (Li, Be, B) ve vybraných horninotvorných a akcesorických minerálech z felsických magmatických a metamorfovaných hornin
Investor: Czech Science Foundation
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