<abstract xml:lang="en" xmlns="http://www.w3.org/1999/xhtml">First occurrence of xenotime-(Y) veins in the Neoproterozoic metamudstone, NW margin of the Małopolska Block, is reported here. The veins are &lt;5 μm thick, inhomogeneous and of varied morphology. Their textural characteristics, exhibiting very low U and Th contents (&lt;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.</abstract>

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.

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

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

Department of Geology, Trinity College, Dublin 2, Ireland

Mineralogia

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,...

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

Publié en ligne: 30 mai 2009

Pages: 105 - 113

DOI: https://doi.org/10.2478/v10002-008-0008-2

Mots clés
xenotime-(Y) veins, hydrothermal events, diagenesis, anchimetamorphism, Małopolska Block, S Poland

This content is open access.

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

Publié en ligne: 30 mai 2009

Pages: 105 - 113

DOI: https://doi.org/10.2478/v10002-008-0008-2

Mots clésxenotime-(Y) veins, hydrothermal events, diagenesis, anchimetamorphism, Małopolska Block, S Poland

This content is open access.

Mots clés
xenotime-(Y) veins, hydrothermal events, diagenesis, anchimetamorphism, Małopolska Block, S Poland