Bulletin 1930
 
This publication presents the descriptive and grade-tonnage models for gold-bearing skarn-type deposits. Two subtypes, gold-skarns and byproduct gold-skarns are distinguished on the basis of gold, silver, and base-metal grades. The regional geologic setting along with detailed local geologic characteristics, grade-tonnage data, and extensive reference Originally published in 1991, this report is presented here in |
Version 1.0 Posted March 1999
The volume consists of 26 separate files and may be navigated using links (highlighted in red) within the table of contents.
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Theodore, T.G., Orris, G.J., Hammarstrom, J.M., and Bliss, J.D., 1991, Gold-bearing skarns: U.S. Geological Survey Bulletin 1930.
Tectonostratigraphic setting and paleodepths
Dimensions of ore in typical deposits
Dimensions of alteration or distinctive haloes
Ore controls/exploration guides
Grades and tonnages of gold-bearing skarns
Bibliography of additional gold-bearing skarn references
| For more information about this report contact William D. Heran at wheran@usgs.gov |
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Last modified: Wednesday, 23-Nov-2016 11:15:35 EST
