NIOSHTIC-2 Publications Search

Recovering Byproduct Heavy Minerals from Sand and Gravel Operations in Northern California.

Authors
Gomes-JM; Martinez-GM; Wong-MM
Source
Proc Aggregate Sand and Gravel Conf Reno Nev 1979 May; :4-33
Link
NIOSHTIC No.
10008461
Abstract
The Bureau of Mines, as part of an effort to maximize minerals and metals recovery from domestic resources, has investigated sand and gravel, placer gold, and industrial mineral operations in northern California. Sand samples from about 50 locations were treated by gravity separation to yield heavy mineral concentrates (black sands). Mineral compositions of the concentrates were determined by chemical analysis and mineralogical examination. Individual zircon, ilmenite, magnetite, platinum-group metals, thoria, and silica products were prepared from heavy mineral concentrates by selective separation using low- and high-intensity magnetic, high-tension, and flotation equipment.
Publication Date
19790501
Document Type
OP;
Fiscal Year
1979
Identifying No.
OP 21-80
NIOSH Division
RERC;
Source Name
Proc. Aggregate, Sand and Gravel Conf., Reno, Nevada, May 5-9, 1979, PP. 4-33
State
CA; NV;
Page last reviewed: April 12, 2019
Content source: National Institute for Occupational Safety and Health Education and Information Division