We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Geochemical constraints on genesis of mineralized quartz-fluorite veins at south west Sinai, Egypt.
- Authors
Gabr, Mahmoud Mohamed Mohamed Ali; El Akeed, Ismail Ahmed Hassan; Nasr, Mahmoud Mosalhi Saleh; Sherif, Hassan Mohammed Yousif
- Abstract
This paper discusses the geochemical constraints on genesis of dispersed mineralized quartz-fluorite veins (QFV) at south west Sinai Peninsula, Egypt. These veins range from colorless to pale to deep violet in color and extend continuously and/or discontinuously in NE-SW, E-W, N-S, and NW-SE trends. They exhibit varying thicknesses ranging from a few centimeters to approximately 0.3 m. The scanning electron microscope (SEM) analysis has revealed the existence of secondary uranium minerals, notably kasolite Pb(UO2)SiO4.(H2O), in association with other minerals such as galena (PbS), atacamite (Cu2Cl(OH)3), and fluorite (CaF2) within the quartz-fluorite veins (QFV). Furthermore, the SEM analysis indicates a significant presence of fluorine incorporated into the biotite lattice of the host granitic rocks. Geochemically, there is a reasonable difference between the host granitic rocks and QFV, especially, silica and alumina contents. Also, some trace elements experienced enrichment in QFV such as Cu, U, Pb and Ag. The chondrite normalized pattern of QFV rare earth elements (REE) shows conspicuous negative Tb anomalies while the host rocks showed negative Eu anomalies. It is noticeable that there is a closed relation between uranium and fluorine in QFV. The Th/U ratios are < 1 in QFV samples indicating that the QFV had not been derived from magmatic origin. Furthermore, the REE and the mineral assemblages of QFV imply to hydrothermal origin (meteoric water) at shallow depth and low temperature < 200 °C under oxidation condition (epithermal genesis).
- Subjects
EGYPT; SINAI, Mount (Egypt); VEINS (Geology); RARE earth metals; URANIUM ores; VEINS; GRANITE; COPPER chlorides
- Publication
Arabian Journal of Geosciences, 2024, Vol 17, Issue 4, p1
- ISSN
1866-7511
- Publication type
Article
- DOI
10.1007/s12517-024-11941-4