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Beneficiation of Calico District, California, Silver-barite Ores.

Authors
Agey-WW; Batty-JV; Wilson-HW; Wilson-WJ
Source
NTIS: PB 221 637 :15 pages
Link
NIOSHTIC No.
10008980
Abstract
The calico silver-barite deposits near Barstow, California, are a potentially important resource. Exploration performed by two major mining companies outlined large tonnages of ore that assayed at 2 to 3 ounces of silver per ton and 7 to 15 percent barite. Laboratory beneficiation work was done by the Bureau of Mines on four samples to develop methods for recovering the silver and/or barite. Cyanidation recovered from 47 to 60 percent of the silver from ore ground to approximately 100 percent minus 325 mesh. Slat roasting minus 10-mesh material, followed by regrinding and cyanidation, recovered 75 to 85 percent of the silver. From 75 to 90 percent of the barite was recovered in a plus 92-percent barite product from either the natural ore or from cyanidation residues. Salt roasting before cyanidation precluded recovery of the high-grade barite concentrate from the leach tails.
Publication Date
19730101
Document Type
IH; Report of Investigation;
Fiscal Year
1973
NTIS Accession No.
PB-221637
NTIS Price
A03
Identifying No.
RI 7730
NIOSH Division
SLRC;
Source Name
NTIS: PB 221 637
State
CA;
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