Show mineral found in iceland the existence ot of a clear crystal like mineral which when looked through produces two images ol of a single object is one ot of the curiosities of science it Is stranger still that the only known supply of 0 this double retracting spar Is found in iceland and Is controlled by the danish government the mine is located on the east coast ol of iceland about four nilles miles from the trading station ot of mi kifford kifjord ki fjord on oil a mountainous slope leat feet above the sea level this mineral Is used largely la in optical instruments polarization a apparatus sp aritus and the like and as the supply of the mined mineral has been eil exhausted lausted the mines having been closed for some years the danish government has recently leased the mine to its former owner A pound of this mineral Is worth ea 5 about 27 |