The Enrichment of Sulphide Ores ; United States Geological Survey Bulletin 529

by William Harvey Emmons

$10 · Offered by Crossroads Books

Washington: Government Printing Office, 1913. softcover, 9 x 6 , 256 pages, indexed, paper missing on spine and taped to front & rear cover. good. Item #5568082 from the introduction, Sulphide ores exposed to weathering at or near the surface of the earth break down and form soluble salts and minerals that are stable under surface conditions. DQ3.

• Binding: Softcover

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