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Sampling Gold Lode Deposits, Bluff, Seward Peninsula, Alaska.
NTIS: PB 203 664 :40 pages
The Bureau of Mines samples a gold-bearing schist series 50 miles east of Nome near Bluff, a dormant mining camp on the southern shore of the Seward Peninsula, Alaska. Gold is unevenly distributed through a section of a schist series that extends from the coast northward 4,500 feet. In this section the schists dip westward 20 to 38 degrees and have an outcrop width of about 1,000 feet and a normal width of about 500 feet. An intensely fractured zone within the schists averages 0.015 to 0.017 Ounce of gold and 0.03 to 0.05 Ounce of silver per ton for outcrop widths of 200 to almost 500 feet. The grade of the remainder of the schist series ranges downward to scant traces. Gold eroded from these schists collected in solution channels in metalimestones to form the Daniels Creek placers, which also extend from the beach southward under the sea for an unknown distance. The lode sources of the gold placers elsewhere in the southern Seward Peninsula may be similar schists that occupy a similar position in the metasedimentary series.
IH; Report of Investigation;
NTIS Accession No.
NTIS: PB 203 664
Page last reviewed: September 2, 2020
Content source: National Institute for Occupational Safety and Health Education and Information Division