Tin-Rare Metal Mineralization Near Mersa Alain, Eastern Desert, Egypt

摘要

Geoehcmieal study was carried out in three tin-rare metal mineralized localities namely : Igla. Abu Dabbab and Muelha in the Eastern Desert of Egypt. Forty-three samples were collected from the vicinity of these mineralized areas and analyzed for major, trace and rare earth elements. The results were treated with simple and sophisticated (factor and discriminant) statistical analytical methods. A graphical method was used for representing the multi-element data to get a dear picture about their enrichment and depletion. Tin shows the greatest degree in Abu dabbab and Pb, Nb and Rb are enriched in Muelha. Copper, Cs, Cr, Zn, Pb and IIf show some enrichment in the Igla and Abu Dabbab data. REE analyses with the ehondrite-normalized plots show the enrichment ofl-IREE in these mineralized areas with a negative europium anomaly in the Muelha rock data. This may suggest the use of REE geochemistry as a useful criterion for Sn-rare metal prospecting. I'actor analysis was helpful in revealing four basic associations which are interpreted as representing variation in I. mineralization, 2. parent rock type, 3. metasomalic, and 4. weathering, and this confirms most relationships identified during basic single-clement interpretation, Lastly, discriminant analysis was successfully used in distinguishing between these mineralized and other barren types.