Garnet (REE+Y)-bearing mineral association in pegmatite from the Chepino lithotectonic Unit, Western Rhodopes.

Saved in:

Bibliographic Details
Title:	Garnet (REE+Y)-bearing mineral association in pegmatite from the Chepino lithotectonic Unit, Western Rhodopes.
Alternate Title:	(REE+Y)-съдържаща минерална асоциация на пегматитов гранат от Чепинската литотоектонска единица, Западни Родопи.
Authors:	Vassileva, Rossitsa D.¹ rosivas@geology.bas.bg, Georgieva, Sylvina¹ sylvina@geology.bas.bg, Cempírek, Jan² jan.cempirek@gmail.com, Grozdev, Valentin¹ val.grozdev@gmail.com, Škoda, Radek² rskoda@sci.muni.cz, Stefanova, Elitsa¹ elitsa.s@gmail.com
Source:	Review of the Bulgarian Geological Society. 2023, Vol. 84 Issue 3, p63-66. 4p.
Subjects:	Silicate minerals, Minerals, Garnet, Plagioclase, Hydrothermal alteration, Xenotime
Geographic Terms:	Bulgaria
Abstract:	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 almandinespessartine crystals contain numerous fractures which host secondary (REE+Y)-bearing phosphate (xenotime, cheralite) 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. [ABSTRACT FROM AUTHOR]
	Copyright of Review of the Bulgarian Geological Society is the property of Bulgarian Geological Society and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database:	Engineering Source

Description
Abstract:	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 almandinespessartine crystals contain numerous fractures which host secondary (REE+Y)-bearing phosphate (xenotime, cheralite) 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. [ABSTRACT FROM AUTHOR]
ISSN:	00073938
DOI:	10.52215/rev.bgs.2023.84.3.63