Mineralogical Characterization of Aeolian Sands from Inner ...
be comprehensively recovered as quartz and feldspar respectively. Apart from the high percentage of SiO 2, Na 2 O, K 2 O and Al 2 O 3, it was also detected that the sample is composed of 1.7% Fe 2 O 3 content which is an unwanted impurity in feldspar due to its colouring properties especially in the manufacture of high-class colourless glass that should contain a maximum of 0.1% Fe 2 O 3 ...