Celestite and Strontianite
The major Pilrt of the strontium salts used in the United States are imported, the production in this country being very small. In fact, no production has been reported since 1910. Deposits of strontium minerals are known to occur in Arizona, and it is thought that a description of strontium salts, the value and uses, may be of some value. 4 p.
Đọc thêm