Diamond-drill Sampling Data, Fluorite-beryllium Deposits, Lost River Valley, Seward Peninsula, Alaska, 1964.
The Bureau of Mines in 1964 drilled 16 diamond-core-drill holes totaling 2,554 feet to sample typical fluorite-beryllium deposits of the Lost River Valley, Seward Peninsula, Alaska. The principal beryllium mineral associated with the fluorite is chrysoberyl which has not been a source of beryllium. The objective of this drilling program was to estimate if the grade and extent of the deposits justifies metallurgical research to determine if marketable beryllium and fluorite can be produced. This preliminary report describes the drilling, sampling, and analytical procedures. Detailed results of sample analyses made to date are tabulated, and results of some preliminary metallurgical tests are included. The analytical data have not been evaluated and work on these samples is continuing. Results of evaluation and additional tests will be presented in succeeding reports.