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Beneficiation of Potential Platinum Resources from Southeastern Alaska.

Authors
Dahlin-DC; Rule-AR; Brown-LL
Source
MISSING :14 pages
Link
NIOSHTIC No.
10006685
Abstract
The Bureau of Mines conducted laboratory batch beneficiation tests on samples from four potential platinum resources in southeastern Alaska to concentrate platinum and other precious metals. This investigation was done as part of the mission of the Bureau to insure an adequate supply of minerals to meet the nation's needs. Petrographic studies and beneficiation methods including gravity concentration, froth flotation, and magnetic separation were used to determine mineral association and to attempt to concentrate the platinum values with a primary mineral value such as chromite, copper sulfide, or magnetite. A high-graded sample from the salt chuck copper sulfide deposit yielded the best platinum-group metal concentrate; the maximum grade attained was 0.04 Oz pt and 1.5 Oz pd per ton of high-grade copper sulfide concentrate. The other samples yielded low-grade mineral concentrates with low platinum-group values, and/or the platinum-group metals did not concentrate with the primary mineral value.
Publication Date
19810101
Document Type
IH; Report of Investigation;
Fiscal Year
1981
Identifying No.
RI 8553
NIOSH Division
ALRC;
Source Name
MISSING
State
AK;
Page last reviewed: April 12, 2019
Content source: National Institute for Occupational Safety and Health Education and Information Division