Work

Skarn association from pegmatite/marble contact in NW Rila: occurrence and composition of F-enriched vesuvianite

Year: 2024

Type: article

Abstract: Calcic skarns are formed on the pegmatite/marble contact in the region of Dzhendemski Ezera, NW Rila, Bulgaria. The garnet/vesuvianite-dominated association is formed in the marbles of the Malyovitsa Lithotectonic Unit as a result of emplacement of crosscutting pegmatite injections. Large (up to 3 cm) prismatic vesuvianite crystals and their radiating aggregates are associated with garnet masses, diopside, scapolite, and zoisite. Representative samples were selected for mineralogical and geochemical study, focused on the vesuvianite composition and its associated minerals. Significant incorporation of fluorine is an important compositional characteristic in vesuvianite and garnet evidencing for the fluid/rock interaction and diffusion-involved bimetasomatic processes due to pegmatite intrusion. Trace-element signatures of the skarn minerals reveal constant isomorphic incorporation of large set of elements including V, Zn, Ga, Ge, Sn, Ni, Bi, REE, HFSE, U.

Source: Review of the Bulgarian Geological Society

DOI: 10.52215/rev.bgs.2024.85.2.128

Authors: Rossitsa D. Vassileva, Svetoslav Petrussenko, Sylvina Georgieva, Jan Cempírek, Radek Škoda

Institutions: Bulgarian Academy of Sciences, National Museum of Natural History, Masaryk University

Language: English

Topic: Geological and Geochemical Analysis

Subfield: Geophysics

Field: Earth and Planetary Sciences

Domain: Physical Sciences

Open Access status: bronze

Funder: Bulgarian National Science Fund

Award: G3006117938