Quartz sandis a
hard,wear
resistant,stable chemical
propertiesof silicate minerals,the
main mineral composition isSiO2 highamounts to *9%,quartz
sand,thecolor is whitewithred orcolorlessand translucent,Mohs hardness of
7,brittleno
cleavage,conchoidal fracture,greasy luster, the relative density of
2.*5,its chemical,thermal and mechanical propertieshave
obviousanisotropy,do not dissolve in
acid,slightly soluble inKOH solution,the melting point
of ***0℃
