MATYSOVA, P., J. GOTZE, Jaromír LEICHMANN, Radek ŠKODA, L. STRNAD, P. DRAHOTA and TM. GRYGAR. Cathodoluminescence and LA-ICP-MS chemistry of silicified wood enclosing wakefieldite - REEs and V migration during complex diagenetic evolution. European Journal of Mineralogy. STUTTGART: E SCHWEIZERBARTSCHE VERLAGSBUCHHANDLUNG, 2016, vol. 28, No 5, p. 869-887. ISSN 0935-1221. Available from: https://dx.doi.org/10.1127/ejm/2016/0028-2556.
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Basic information
Original name Cathodoluminescence and LA-ICP-MS chemistry of silicified wood enclosing wakefieldite - REEs and V migration during complex diagenetic evolution
Name in Czech Katodová luminiscence a LA-ICM-MS geochemie silicifikovaných dřev uzavírajících wakefieldit
Authors MATYSOVA, P. (203 Czech Republic), J. GOTZE (276 Germany), Jaromír LEICHMANN (203 Czech Republic, guarantor, belonging to the institution), Radek ŠKODA (203 Czech Republic, belonging to the institution), L. STRNAD (203 Czech Republic), P. DRAHOTA (203 Czech Republic) and TM. GRYGAR (203 Czech Republic).
Edition European Journal of Mineralogy, STUTTGART, E SCHWEIZERBARTSCHE VERLAGSBUCHHANDLUNG, 2016, 0935-1221.
Other information
Original language English
Type of outcome Article in a journal
Field of Study 10500 1.5. Earth and related environmental sciences
Country of publisher Germany
Confidentiality degree is not subject to a state or trade secret
Impact factor Impact factor: 1.362
RIV identification code RIV/00216224:14310/16:00097682
Organization unit Faculty of Science
Doi http://dx.doi.org/10.1127/ejm/2016/0028-2556
UT WoS 000399807600002
Keywords (in Czech) wakefieldit; xenotime;silicifikovaná dřeva; stopové prvky; REE; vanad; diageneze
Keywords in English wakefieldite; xenotime; silicified wood; quartz; trace elements; REE; vanadium; diagenesis; cathodoluminescence; LA-ICP-MS
Tags NZ, rivok
Tags International impact, Reviewed
Changed by Changed by: Ing. Nicole Zrilić, učo 240776. Changed: 13/4/2018 12:53.
Abstract
Silicified Agathoxylon-type wood of Late Palaeozoic age was characterized by means of cathodoluminescence (CL) and LA-ICP-MS of the quartz mass, which was found to contain wakefieldite, characterized by electron-microprobe (EMP) analysis, Raman microspectroscopy and X-ray diffraction. Although former organic matter is almost absent, plant anatomy served as the template for the quartz mass texture. Two generations of quartz mass were distinguished; the large proportion of the silicified wood consisting of brownish alpha-quartz with a dark reddish CL emission, and the minor portion of whitish 'leached' wood with a short-lived (transient) blue CL. On the outer edge, a silicified texture of formerly slightly humified wood also emits a dark reddish CL. Likely the wood specimen has been fossilized and diagenetically altered in several steps. The marginal part had been humified (reductively degraded) before the initial stages of silicification. The LA-ICP-MS analyses revealed chemical differences in all three distinct parts. The quartz mass relatively enriched in REEs and As and giving the dark reddish CL is interpreted as a primary diagenetic mineral mass. Whitish zones relatively depleted in U and V, and enriched in Al, Li, Rb, Cu, and Sr producing the blue CL would then be a secondary diagenetic overprint. An EMP/WDS analysis identified As-rich xenotime-(Y) and a solid solution of wakefieldite-(Ce) and wakefieldite-( Y), which locally enclose individual silicified tracheids. Wakefieldite, identified in silicified plant tissue for the first time, was most likely formed as a secondary mineral during post-depositional diagenesis. The mineral diagenesis did not erase the original anatomy of the wood.
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