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@article{2380099,
author = {Georgieva, Sylvina and Vassileva, Rossitsa D. and Grozdev, Valentin and Milenkov, Georgi and Cempírek, Jan and Škoda, Radek and Stefanova, Elitsa},
article_number = {3},
doi = {http://dx.doi.org/10.52215/rev.bgs.2023.84.3.35},
keywords = {pegmatites; (REE plus Y; U; Th)-(Nb; Ta; Ti) oxide minerals; ishikawaite; fergusonite; fersmite},
language = {eng},
issn = {0007-3938},
journal = {Review of the Bulgarian Geological Society},
title = {Redistribution of incompatible elements during hydrothermal alteration of pegmatite from the Djurkovo Pb-Zn deposit, Central Rhodopes},
url = {https://bgd.bg/REVIEW_BGS/REVIEW_BGD_2023_3/PDF/06_Georgieva-S_Rev_BGS_2023-3.pdf},
volume = {84},
year = {2023}
}
TY - JOUR
ID - 2380099
AU - Georgieva, Sylvina - Vassileva, Rossitsa D. - Grozdev, Valentin - Milenkov, Georgi - Cempírek, Jan - Škoda, Radek - Stefanova, Elitsa
PY - 2023
TI - Redistribution of incompatible elements during hydrothermal alteration of pegmatite from the Djurkovo Pb-Zn deposit, Central Rhodopes
JF - Review of the Bulgarian Geological Society
VL - 84
IS - 3
SP - 35-38
EP - 35-38
PB - Bulgarian Geological Society
SN - 00073938
KW - pegmatites
KW - (REE plus Y
KW - U
KW - Th)-(Nb
KW - Ta
KW - Ti) oxide minerals
KW - ishikawaite
KW - fergusonite
KW - fersmite
UR - https://bgd.bg/REVIEW_BGS/REVIEW_BGD_2023_3/PDF/06_Georgieva-S_Rev_BGS_2023-3.pdf
N2 - Mineralogical and geochemical study was done on weakly deformed, relatively thin pegmatites that in-truded the marbles of the Rhodope metamorphic complex in the Djurkovo Pb-Zn deposit, Central Rhodopes. The pegmatites consist mainly of K-feldspar and quartz and contain minor garnet; the pegmatites lack clear zonation ex-cept for the preferable crystallization of the garnet in the central parts. The main accessory minerals are ishikawaite, zircon, monazite-(Ce), apatite, and titanite. The textural relationships indicate later hydrothermal alteration of pegma-tites which led to the formation of albite, epidote, sericite, chlorite, carbonate, quartz and leucoxene. The (REE+Y, ACT, Nb, Ta, Ti)-bearing pegmatite minerals (oxides, silicates and phosphates) are partly leached and/or replaced by secondary ones. The newly-formed phases precipitated as anhedral grains along fractures and dissolved zones onto/ or close to the primary minerals due to the limited mobility of the incompatible elements in fluids conditioned by pH, ligand activity and temperature.
ER -
GEORGIEVA, Sylvina, Rossitsa D. VASSILEVA, Valentin GROZDEV, Georgi MILENKOV, Jan CEMPÍREK, Radek ŠKODA and Elitsa STEFANOVA. Redistribution of incompatible elements during hydrothermal alteration of pegmatite from the Djurkovo Pb-Zn deposit, Central Rhodopes. \textit{Review of the Bulgarian Geological Society}. Bulgarian Geological Society, 2023, vol.~84, No~3, p.~35-38. ISSN~0007-3938. Available from: https://dx.doi.org/10.52215/rev.bgs.2023.84.3.35.
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