Informace o publikaci
Garnet (REE plus Y)-bearing mineral association in pegmatite from the Chepino lithotectonic Unit, Western Rhodopes
| Autoři | |
|---|---|
| Rok publikování | 2023 |
| Druh | Článek v odborném periodiku |
| Časopis / Zdroj | Review of the Bulgarian Geological Society |
| Fakulta / Pracoviště MU | |
| Citace | |
| www | https://bgd.bg/REVIEW_BGS/REVIEW_BGD_2023_3/PDF/13_Vassileva_Rev_BGS_2023-3.pdf |
| Doi | http://dx.doi.org/10.52215/rev.bgs.2023.84.3.63 |
| Klíčová slova | pegmatite; garnet; xenotime; 'Suhata reka' quarry; SW Bulgaria |
| Popis | Large pegmatite body/bodies are outcropping in the "Suhata Reka" quarry, near the town of Rakitovo. Their bulk mineral composition with dominant K-feldspar (40%), plagioclase (30%), quartz (25%) and mica (<= 5%) is complemented by (REE+Y)-bearing association of primary and secondary accessories. Zircon, monazite, xenotime, scarce apatite and noticeable amount of garnet are among the pegmatite primary minerals. The cm-sized almandine-spessartine crystals contain numerous fractures which host secondary (REE+Y)-bearing phosphate (xenotime, cher-alite) and silicate minerals (e.g. REE-epidote). Formation of the late-stage REE-mineralization in garnet is due to its hydrothermal alteration and redistribution of REE+Y in the secondary phases. |