Database name: |
World Volcanogenic Massive Sulphide Deposits |
Custodial agency: |
Society of Economic Geologists & Geological Survey of Canada |
Compilers: |
J. M. Franklin, H. L. Gibson, I. R. Jonasson, and A. G. Galley |
Release date: |
2015-03-23 |
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Deposit name(s): |
Johnson River (deposit name) |
Political location(s): |
United States; Province or state: Alaska |
Deposit clan (type): |
Volcanogenic massive sulphide |
Deposit (sub) types: |
Siliciclastic felsic; 5 |
Geologic province: |
North Cordilleran |
Geologic subprovince: |
Talkeetna Mtns. |
Commodities: |
Cu; Pb; Zn; Au; Ag |
Geological ages: |
Late Triassic (host rocks) |
Radiometric ages: |
Age - Ma: 200; Event dated: mineralization; Interpretive comment: approximate age reported in SEG Centennial Volume appendix |
References: |
Nokleberg, W. J.; United States Geological Survey; Division of Geological and Geophysical Surveys, Alaska; Geological Survey of Canada, 2005 |
Metallogenesis and Tectonics of the Russian Far East, Alaska, and the Canadian Cordillera |
Professional Paper , United States Geological Survey, Publication code 1697, 397 p. |
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Resource data: |
Disclaimer - Reserves/Resource Data
Her Majesty the Queen in Right of Canada, represented by the Minister of Natural Resources (NRCan) does not warrant or guarantee the accuracy, completeness or fitness for any purpose of Reserve and Resource information (Data) contained in this database, including whether the Data is compliant with any securities regulations or standards, and NRCan does not assume any liability with respect to any damage or loss incurred as a result of the use made of the Data.
Resource and reserve figures are historical in nature. The Data source provided with each set of figures should be cited if the Data are re-reported. |
0.99 million metric tons ore; Combined with production?: no; Provisional entry?: no; Resource category: geological resourceGrade-commodity information: | Cu: 0.76 percent Pb: 1.1 percent Zn: 8.3 percent Au: 10.35 grams/metric ton Ag: 7.84 grams/metric ton | Reference: Franklin, J. M.; Gibson, H. L.; Jonasson, I. R.; Galley, A. G., 2005: Volcanogenic Massive Sulphide Deposits; Appendices on CD-ROM, Section [Franklin] Volcanogenic Massive Sulfide Deposits, in Economic Geology 100th Anniversary Volume, Edited by Hedenquist, J. W.; Thompson, J. F. H.; Goldfarb, R. J.; Richards, J. P., Special Volume, Society of Economic Geology, 1146 p., 1 disks Percent weights allocated to deposit: 100.0% |