. . . . . "sedimentary quartzites" . . "quartzite" . "quartz" . "Weber quartzite" . "Tennessee quartzite" . "Delhi quartzite" . . . "white quartzite" . . "Quartzitic Sandstone" . "quartzite rocks" . . "quartzitic" . . . "quartzite sandstone" . "quartzitic sandstone" . . . "magnetic quartzite" . . . . . . . "quartzites" . . "quarzites" . . . . "Quartzite" . . . "Orthoquartzite" . "Quartzite" . "metaquartzite" . . . "orthoquartzite" . . "red quartzite" .