Szczegóły publikacji
Opis bibliograficzny
The stability of xenotime in high Ca and Ca-Na systems, under experimental conditions of 250–350$^{\circ}$C and 250-400 MPa: the implications for fluid-mediated low-temperature processes in granitic rocks / Bartosz Budzyń, Gabriela A.KOZUB-BUDZYŃ // Geological Quarterly ; ISSN 1641-7291. — 2015 — vol. 59 no. 2, s. 316–324. — Bibliogr. s. 324. — Publikacja dostępna online od: 2015-02-25
Autorzy (2)
- Budzyń Bartosz
- AGHKozub-Budzyń Gabriela A.
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 91929 |
|---|---|
| Data dodania do BaDAP | 2015-10-06 |
| Tekst źródłowy | URL |
| DOI | 10.7306/gq.1223 |
| Rok publikacji | 2015 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Creative Commons | |
| Czasopismo/seria | Geological Quarterly |
Abstract
The stability of xenotime was tested by experiments in the presence of a silicate mineral assemblage and two different fluids, 2M Ca(OH)(2) or Na2Si2O5 + H2O, under P-T conditions of 200-400 MPa and 250-350 degrees C. The xenotime was stable in runs with 2M Ca(OH)(2), replicating the low-temperature metasomatic alterations of granitic rocks, except in experiment at 350 degrees C and 400 MPa, where some (Y,REE)-rich fluorapatite formed. Experiments with Na2Si2O5 + H2O resulted in significant xenotime alteration and partial replacement by an unknown (Y,HREE)-rich silicate, and in the formation of minor amounts of (Y,REE)-rich fluorapatite. The latter indicate preferential partitioning of Y and REE into silicates over phosphates during low-temperature, metasomatic processes in a high Na-Ca system, similar to peralkaline granitic rocks.
