| Show TURQUOISE SE Tt laTITUDES ALTITUDES n By far tar th the largest part of ot the worlds world's I turquoIse comes from the mines mine near the tho Persian cU city of ot where Omar Kha Khayyam nm was born and lies burled buried The Time mines mine are lire situated In a I range raDKA of ot mountains rising to the height of feet teet The highest point at t whIch turquoises have been found feet teet above o sea ea JC edl and thelo lol est eat feet teet The geological form tion of the tho mountains is p po greenstone g limestone a ai sandstone the turquoise being found found- veins In the rock The rhe method of ot tl Persians who operate tho the mines quite antiquated for or only ladders a ai pulleys pUlle's are aro used in the Jou tough h shafts |