- Tytuł:
- Ancylite-(Ce) from quartz-calcite-chlorite veins in phyllite of the Opava Mountains (SW Poland)
- Autorzy:
-
Janeczek, Janusz
Szopa, Krzysztof
Fabiańska, Monika - Powiązania:
- https://bibliotekanauki.pl/articles/2060272.pdf
- Data publikacji:
- 2020
- Wydawca:
- Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
- Tematy:
-
ancylite-(Ce)
phyllite
CO2-rich hydrothermal solution
Opava Mts.
Polska - Opis:
- Ancylite-(Ce) occurs in quartz-calcite-chlorite veins crosscutting the foliation of phyllite in the Dewon Quarry in the foothills of the Opava Mountains of the eastern Sudetes, south-west Poland. Irregularly shaped grains of ancylite are up to 67 μm long and 22 μm wide. The compositional range of ancylite, determined by electron microprobe, is expressed by the empirical formula: (Sr0.65-0.55Ca0.19-0.14Fe0.03-0.00)∑0.87-0.69 (Ce0.58-0.50Nd0.26-0.22La0.26-0.21Pr0.06-0.05Sm0.05-0.04Gd0.07-0.03Dy0.01-0.00)∑1.29-1.05 (CO3)2(OH1.07-0.99F0.22-0.0.06)∑1.29-1.05· 0.95-0.93H2O. Ancylite crystallized directly from CO2-rich hydrothermal solutions as the last mineral in the veins following precipitation of calcite. The solution temperature, estimated using various chlorite geothermometres, was in the range of 260-340°C.
- Źródło:
-
Geological Quarterly; 2020, 64, 3; 801--806
1641-7291 - Pojawia się w:
- Geological Quarterly
- Dostawca treści:
- Biblioteka Nauki
Artykuł