%0 Journal Article
%T Geochemical Characteristics and Chemical Electron  Microprobe U-Pb-Th Dating of Pitchblende  Mineralization from Gabal Gattar Younger Granite,  North Eastern Desert, Egypt
%A Hassan A. A. Shahin
%J Open Journal of Geology
%P 24-32
%@ 2161-7589
%D 2014
%I Scientific Research Publishing
%R 10.4236/ojg.2014.41003
%X <p class=\"MsoNormal\">
	<span style=\"font-family:Verdana;\" lang=\"EN-US\">Pitchblende
mineralization was studied</span><span lang=\"EN-US\"> </span><span style=\"font-family:Verdana;\" lang=\"EN-US\">in the
younger granite samples collected from Gabal</span><span lang=\"EN-US\"> </span><span style=\"font-family:Verdana;\" lang=\"EN-US\">Gattar, north Eastern Desert, Egypt using electron scanning
microscope (ESM) and electron probe microanalyses (EPMA). This study revealed
that this pitchblende contains significant Zr content reach</span><span style=\"font-family:Verdana;\" lang=\"EN-US\">ing</span><span style=\"font-family:Verdana;\" lang=\"EN-US\"> up</span><span lang=\"EN-US\"> </span><span lang=\"EN-US\"><span style=\"font-family:Verdana;\">to (66.80% ZrO</span><sub><span style=\"font-family:Verdana;\">2</span></sub><span style=\"font-family:Verdana;\">)</span></span><span style=\"font-family:Verdana;\" lang=\"EN-US\">,</span><span style=\"font-family:Verdana;\" lang=\"EN-US\"> which</span><span lang=\"EN-US\"> </span><span style=\"font-family:Verdana;\" lang=\"EN-US\">suggests
that volcanic rocks were probably the source of such a deposit. High level
emplaced</span><span lang=\"EN-US\"> </span><span lang=\"EN-US\"><span style=\"font-family:Verdana;\">high-K
Calc-alkaline plutons as Qattar granite may have been associated with their
volcanic equivalent emplaced in the surrounding area or now eroded. Lead
content of the pitchblende mineralization is high and with moderate volcanics
(up to 7.71% PbO). In contrast, it is low in ThO</span><sub><span style=\"font-family:Verdana;\">2</span></sub><span style=\"font-family:Verdana;\">, Y</span><sub><span style=\"font-family:Verdana;\">2</span></sub><span style=\"font-family:Verdana;\">O</span><sub><span style=\"font-family:Verdana;\">3</span></sub><span style=\"font-family:Verdana;\"> and REE</span><sub><span style=\"font-family:Verdana;\">2</span></sub><span style=\"font-family:Verdana;\">O</span><sub><span style=\"font-family:Verdana;\">3</span></sub><span style=\"font-family:Verdana;\">. High</span></span><span lang=\"EN-US\"> </span><span style=\"font-family:Verdana;\" lang=\"EN-US\">Zr and Pb content associated with</span><span lang=\"EN-US\"> </span><span style=\"font-family:Verdana;\" lang=\"EN-US\">pitchblende mineralization from Gattar</span><span lang=\"EN-US\"> </span><span style=\"font-family:Verdana;\" lang=\"EN-US\">granite</span><span lang=\"EN-US\"> </span><span style=\"font-family:Verdana;\" lang=\"EN-US\">indicate</span><span style=\"font-family:Verdana;\" lang=\"EN-US\">s</span><span
%K Pitchblende Mineralization
%K Gabal Gattar Granite
%K Chemical U-Pb-Th Dating
%U http://www.scirp.org/journal/PaperInformation.aspx?PaperID=42333