Abstract
Evaluation of Marwit Rod El Leqah deposit as pegmatite high purity quartz source for advanced applications was conducted through the geological, mineralogical and geochemical studies. Elemental analysis of a representative quartz sample showed that the quartz deposits were classified as medium purity quartz with 99.575% average SiO2 content and about 0.422% (4220 ppm) of accompanied mineral. Field study and petrography investigation using optical polarized transmitted microscope and reflected light microscope revealed that these impurities were mainly found as solid particulates of iron oxide, muscovite, rutile, orthoclase, granitic rafts, and as fluid inclusions as well. Moreover, structural undesirable trace elements were also presented in the quartz sample.
Highlights
The world demand of quartz is increasing gradually, in particular, high purity quartz [1] [2]
High purity quartz is characterized by containing less than 50 ppm impurities [6]
High purity quartz can be formed under special geological conditions where a narrow set of chemical and physical parameters have been fulfilled
Summary
The world demand of quartz is increasing gradually, in particular, high purity quartz [1] [2]. (2015) Marwit Rod El Leqah Quartz Deposits as a Strategic Source of High Purity Quartz. Egyptian geological survey (1992) recorded a total of 37 quartz bodies under exploration and 20 new quartz sites scattered in the central area of the Eastern Desert between Quift-Quseir road in the north and Idfu-Mars Alam road in the south [12]. These quartz deposits are shaped as lens and as series of veins, genetically and spatially associated with granodioritic, granitic and tonalitic intrusions. The aim of this search is to study the amenability of Marwit Rod El Leqah quartz for high technical applications based on detailed mineralogy and geochemistry investigations
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