Xenotime-(Y) veins in a Neoproterozoic metamudstone (Małopolska Block, S Poland)

• Autorzy: Stanisławska M. , Michalik M.

Identyfikatory

DOI

10.2478/v10002-008-0008-2

• Języki publikacji: EN

Abstrakty

EN

First occurrence of xenotime-(Y) veins in the Neoproterozoic metamudstone, NW margin of the Małopolska Block, is reported here. The veins are <5 µm thick, inhomogeneous and of varied morphology. Their textural characteristics, exhibiting very low U and Th contents (<1 wt%) and relatively high heavy rare earth elements (REE) contents (12–24 REE2O3 wt%), suggest hydrothermal genesis, though diagenetic precursors of the veins are not excluded. The veins provide good evidence of the mobility of Y, REE, U and Th in low-temperature conditions (anchimetamorphic to greenschist facies). The observed differences in the chemical composition of the veins may indicate multiple stages of formation, possibly during several hydrothermal events that affected the area.

Słowa kluczowe

EN

xenotime-(Y) veins; hydrothermal events; diagenesis; anchimetamorphism; Małopolska Block; S Poland

• Wydawca: Mineralogical Society of Poland
• Czasopismo: Mineralogia
• Rocznik: 2008
• Tom: Vol. 39, iss. 3/4
• Strony: 105--113
• Opis fizyczny: Bibliogr. 23 poz., fot.

Twórcy

autor

Stanisławska M.

• Institute of Geological Sciences, Jagiellonian University, ul. Oleandry 2a, 30-063 Kraków, Poland
• Department of Geology, Trinity College, Dublin 2, Ireland

autor

Michalik M.

• Institute of Geological Sciences, Jagiellonian University, ul. Oleandry 2a, 30-063 Kraków, Poland

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