Other formats:
BibTeX
LaTeX
RIS
@article{2393108, author = {Dolníček, Zdeněk and Krejčí Kotlánová, Michaela and Ulmanová, Jana and Sejkora, Jiří}, article_number = {1}, doi = {http://dx.doi.org/10.3390/min14010001}, keywords = {diagenetic alteration; heavy minerals; sandstone diagenesis; ilmenite alteration; garnet dissolution; HFSE mobility; REE mobility; TiO2 minerals; apatite; Ra & ccaron;a Unit}, language = {eng}, issn = {2075-163X}, journal = {Minerals}, title = {Remobilization of HFSE, Y, and REE during Diagenetic Alteration of Heavy Minerals in Sandstones from the Chvalčov Site, Flysch Belt of the Outer Western Carpathians, Czech Republic}, url = {https://www.mdpi.com/2075-163X/14/1/1}, volume = {14}, year = {2024} }
TY - JOUR ID - 2393108 AU - Dolníček, Zdeněk - Krejčí Kotlánová, Michaela - Ulmanová, Jana - Sejkora, Jiří PY - 2024 TI - Remobilization of HFSE, Y, and REE during Diagenetic Alteration of Heavy Minerals in Sandstones from the Chvalčov Site, Flysch Belt of the Outer Western Carpathians, Czech Republic JF - Minerals VL - 14 IS - 1 SP - 1-20 EP - 1-20 PB - MDPI SN - 2075163X KW - diagenetic alteration KW - heavy minerals KW - sandstone diagenesis KW - ilmenite alteration KW - garnet dissolution KW - HFSE mobility KW - REE mobility KW - TiO2 minerals KW - apatite KW - Ra & KW - ccaron;a Unit UR - https://www.mdpi.com/2075-163X/14/1/1 N2 - An in situ electron microprobe study of detrital minerals yielded important insights into the diagenetic history of the Cretaceous-to-Paleogene flysch sandstones from the Chvalčov site, Rača Unit, Flysch Belt of the Outer Western Carpathians. Detrital titanite and a Fe-Ti mineral (probably ilmenite) were almost completely altered to TiO2 minerals, which also newly crystallized in intergranular spaces of sandstone. Brookite, anatase, and, exceptionally, rutile were identified by Raman spectroscopy. Authigenic TiO2 phases show complex composition with occasionally elevated contents of Fe, Nb, Zr, V, Sc, Cr, Al, Y, and/or P, which were likely sourced from altered neighboring heavy minerals. In addition, rare authigenic LREE- and Y-enriched apatite rims were observed on detrital apatite. The remobilization of REE, Y, and HFSE was likely mediated by acidic early diagenetic fluids enriched in fluoride and sulfate anions. The superimposed formation of calcite cement was associated with the dissolution of detrital garnet, feldspars, and quartz. The compositions of detrital apatite and garnet (Alm60-82Prp4-30Sps0-24Grs0-19) are comparable with those from adjacent parts of the Flysch Belt. Detrital rutile is enriched in Nb, V, Cr, and Zr. Our study illustrates the intensity of diagenetic alteration of detrital minerals in flysch sandstones as well as the usefulness of in-situ electron-microprobe investigations for the recognition of processes influencing heavy minerals in diagenetically altered sediments. ER -
DOLNÍČEK, Zdeněk, Michaela KREJČÍ KOTLÁNOVÁ, Jana ULMANOVÁ and Jiří SEJKORA. Remobilization of HFSE, Y, and REE during Diagenetic Alteration of Heavy Minerals in Sandstones from the Chvalčov Site, Flysch Belt of the Outer Western Carpathians, Czech Republic. \textit{Minerals}. MDPI, 2024, vol.~14, No~1, p.~1-20. ISSN~2075-163X. Available from: https://dx.doi.org/10.3390/min14010001.
|