Výsledky vyhledávání - "Sylvina Georgieva"

Mineral association in pegmatites from the Djurkovo Pb-Zn deposit, Central Rhodopes: preliminary results

Autor: Sylvina Georgieva, Rossitsa Vassileva, Georgi Milenkov

Publikováno v: Review of the Bulgarian Geological Society. 83:19-22

Deformed pegmatites of varying thickness and position are a significant constituent intruded in the metamorphic complex, hosting the Djurkovo Pb-Zn deposit in Central Rhodopes. The mineral composition of the pegmatites consists of plagioclase, K-feld

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a5642f75cf1a947904b6be3bf5ab1426
https://doi.org/10.52215/rev.bgs.2022.83.3.19

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Major and trace element signature of epidote-group minerals in altered pegmatites from the Petrovitsa Pb–Zn deposit of the Madan ore region, Central Rhodopes, Bulgaria: Evidence of allanite/epidote transformation

Autor: Sylvina Georgieva, Rossitsa Vassileva, Georgi Milenkov, Elitsa Stefanova

Publikováno v: Geologica Carpathica. 73

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7e8575dd5136a3f40f003e92c837a7a4
https://doi.org/10.31577/geolcarp.73.4.5

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Chlorite alteration in pegmatite from the Madan Pb-Zn deposits: mineral association, chemical composition and temperature of formation

Autor: Elitsa Stefanova, Sylvina Georgieva, Georgi Milenkov, Rossitsa D. Vassileva

Publikováno v: Review of the Bulgarian Geological Society. 82:70-72

Chlorites are common constituent of the secondary mineral assemblage formed as alteration products after aluminosilicate host rocks in the Pb-Zn deposits in Madan district. In concordant pegmatite body from the Petrovitsa deposit, they are formed aft

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9473e285b40620b54b422339d0420f9d
https://doi.org/10.52215/rev.bgs.2021.82.3.70

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Epidote metasomatic zone in pegmatites from the vicinity of Strashimir Pb-Zn vein deposit, Central Rhodopes: mineralogy, geochemistry and in-situ U/Pb age determination

Autor: Irena Peytcheva, Elitsa Stefanova, Sylvina Georgieva, Georgi Milenkov, Rossitsa D. Vassileva

Publikováno v: Review of the Bulgarian Geological Society. 82:22-24

The epidote-group minerals are the major hydrothermal constituent, along with titanite, chlorite, quartz, and carbonates, developed in pegmatite on the contact with marble in the vicinity of Strashimir Pb-Zn vein deposit, Central Rhodopes. The U-Pb a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::30e2679adf8bb4f8d76ad758b704c896
https://doi.org/10.52215/rev.bgs.2021.82.3.22

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Trace Element Geochemistry of Alunite from the Chelopech High-sulphidation Epithermal Deposit, Bulgaria: a Potential Tool for Exploration of Epithermal Deposits

Autor: Sylvina Georgieva, Atanas Hikov, Elitsa Stefanova, Irena Peytcheva

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0cb10d90e355a2867ff2e58d3d7619d1
https://doi.org/10.7546/crabs.2020.08.07

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Mineral associations and their distribution in hydrothermal alteration zones of the Chelopech high-sulphidation deposit, Bulgaria

Autor: Sylvina Georgieva

Publikováno v: Geologica Balcanica. 46:11-16

This study is focused on the mineral assemblages developed during hydrothermal alteration in the host rocks of the Chelopech deposit and aims to reveal some characteristics of ore-forming fluids. Three well-distinguished and simultaneously formed hyd

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::78445c99100e975721980f8e199b5eba
https://doi.org/10.52321/geolbalc.46.2.11

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