| Show Kinds of Mineral j From One Mine Three hundred different mineral mined from a 1 single square quare mile of ot ground Is the unique distinction of ol the mme mines In Sweden Sveden which contain b b by far the worlds world's most varied va- va vai i ned ried assortment of ot metals Two bundred hundred hun hUD I dred of the Lan ban minerals ar arstill are ar still mysteries to th the scientific world Of or the eighty or more minerals that already have luave been analyzed a 1 large largs number are lire found only in Sweden For more than centuries th these m 8 ha e I been n worked the tho prinI principal prin prin- cipal I yields Elds being Iron tron ore ort Iron and magnetite During All II of those years the miners have been beta bringing home homo to their families queer lumps of oC mineral mineraI to be cherished as keepsakes There Is for example which Is rose red an hue and which crystallizes In ro rosette rOw re- sette formation Then there la is th the strange which In th the mine Is sky ky blue and ond transparent but when brought to the surface turns turn dark brown and opaque Another similar metal meta changes In the same nam way from a beautiful 1 green to black Another when heated turns Into thin sheets which resemble |