OCR Text |
Show Dett Aibectot Mines. Commercial asbestos Is a flre-rwilst-lug substance composed of silky fibers tip to six Inches In length, which can bo used for packing or woven Into fabrics. fab-rics. Its vnluo corresponds approximately approxi-mately with tho length of the fiber. It Is prepared from a mineral of variable vari-able color, which Is usually found deposited de-posited In thin sheets .In the seams of grnnlte rock. The fiber Is normal to tho sheets and Us length Is thus limited lim-ited by the thtrkness of tho seam. Tho most Important deposits so far discovered dis-covered In Amcilca aro one of Hesh-colored Hesh-colored mineral In Arlrnna and a green deposit at Utack lake, In the province of Quebec, Canada. In order to se-ctiro se-ctiro tho asbestos mineral It Is necessary nec-essary to quarry tho granite In which It occurs and afterward sepamto tho materials by crushing. |