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Recovery of Byproduct Heavy Minerals from Sand and Gravel Operations in Central and Southern California.

Authors
Gomes-JM; Martinez-GM; Wong-MM
Source
MISSING :20 pages
Link
NIOSHTIC No.
10006910
Abstract
The Bureau of Mines has investigated the occurrence and recovery of byproduct heavy minerals from sand and gravel operations as a means of assessing the nation's resources. Sand samples from 63 locations in central and southern California were treated to yield heavy- mineral concentrates. The mineral compositions of the concentrates were characterized by chemical and mineralogical examinations. Additional large quantities of concentrates were prepared from selected deposits that contained significant quantities. Beneficiation studies were performed on these concentrates to recover individual mineral products. Gold was recovered by amalgamation; platinum-group metals and radioactive minerals by flotation; magnetite, ilmenite, and chromite by magnetic and high- tension separation techniques.
Publication Date
19800101
Document Type
IH; Report of Investigation;
Fiscal Year
1980
NTIS Accession No.
NTIS Price
Identifying No.
RI 8471
NIOSH Division
RERC;
Source Name
MISSING
State
CA;
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