GEOCHEMICAL BEHAVIOR
OF SOME ORE METALS IN DISPERSION AUREOL, CENTRAL EASTERN DESERT, EGYPT
M. M. HASSAAN, F. YUOSSEF1,
M. M. ALI1, F. AMMAR1, Y. A. ELSHISHTAWI, S. M. SAKR1
Dept. Geology, Fac. Sciences, ElAzhar Univ., Cairo; 1Nuclear Materials
Authority, Maadi, Cairo, Egypt. |
The element distribution and minerals of 60
samples from 11 sections of fresh rocks, fragmented rock, wethering products bearing W-Mo, NbTa-Sn, W-Sn and Pb-Zn mineralizations in central Eastern Desert of Egypt show certain
geochemical pattcrns. These are regulated by nature of rocks, mode of occurrence of elements, type of geochemical
dispersioin, climatic conditions and the geochemical nature of the elements concerned. These elements are Sn, W, Mo, Nb,
Pb, Zn, Cu.
The dispersion aureoles of Sn, W, Mo, Pb, Zn are mechanical. However, chemical dispersion played a rol movement of elements due to prevalence of pluvial times at intervals in the
area.
Copper and Pb are pathfinders of W-Sn mineralizations by sampling the fragmented host rock.
Niobuim shows anomalous content in the preducts of weathering of mineralized and nonmineralized granites,
pointing out awareness in revealing dispersion aureoles of Nb related to Nb mineralized granites. |
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