Database name: |
World Mississippi Valley-type deposits |
Custodial agency: |
Geological Survey of Canada |
Compilers: |
D. F. Sangster |
Release date: |
2015-02-06 |
|
|
Deposit name(s): |
Silvermines |
Political location(s): |
Ireland; Province or state: County Tipperary |
Deposit clan (type): |
Mississippi Valley-type |
Deposit (sub) types: |
Irish-type |
Deposit status: |
past producer |
Commodities: |
Zn; Pb; Ag; barite |
Mineralization styles: |
veins; fault breccia cement; fracture fill; disseminated; bedded replacement |
Geological ages: |
Courceyan (host rocks) |
Tectonic setting: |
continental platform (host rocks) |
Host rocks: |
(1) sedimentary; sandstone-conglomerate; Depositional setting: Shallow marineIndividual lithologies: | sandstone-conglomerate | Host rock stratigraphy: | Basal Clastics Unit member |
(2) sedimentary; carbonate; Depositional setting: Shallow marineIndividual lithologies: | biosparite | Host rock stratigraphy: | Lower Dolomite member |
(3) sedimentary; carbonate; Depositional setting: Shallow marineIndividual lithologies: | reef limestone reef limestone breccia dolomitized reef limestone breccia dolomite breccia | Host rock stratigraphy: | Waulsortian Limestone member |
(4) sedimentary; chert; Depositional setting: Shallow marineIndividual lithologies: | chert | Host rock stratigraphy: | Waulsortian Limestone member |
|
Mineralogy: |
barite, quartz, galena, pyrite, calcite, sphalerite, arsenopyrite, lollingite, boulangerite, chalcopyrite, tennantite, dolomite, marcasite, sulphominerals, siderite |
Radiometric ages: |
Object dated: Alteration Signature; Age - Ma: 337; Dating method: Ar-Ar; Concentrate: muscovite; Source rock: sandstone; Event dated: mineralization; Interpretive comment: Detrital muscovite in altered Old Red sandstone beneath Silvermines orebody; Reference: Hitzman, M. W., 1994: Argon-Argon Stepheating Studies of Muscovite in the Upper Devonian Old Red Sandstone: The First Absolute Dates for the Age of Irish Zinc-Lead Mineralization; in Abstracts with Programs, Geological Society of America Annual Meeting, Seattle,October 24-27, 1994, Edited by Anonymous, Abstracts with Programs, Geological Society of America |
References: |
Andrew, C. J., 1986 |
The Tectono-Stratigraphic Controls to Mineralization in the Silvermines Area, County Tipperary, Ireland |
in Geology and Genesis of Mineral Deposits in Ireland, Edited by Andrew, C. J.; Crowe, R. W. A.; Finlay, S.; Pennell, W. M.; Pyne, J. F., Irish Association for Economic Geology, Cahill Printers, Ireland, 711 p, p. 377 - 418 |
Leach, D. L.; Sangster, D. F.; Kelley, K. D.; Large, R. R.; Garven, G.; Allen, C. R.; Gutzmer, J.; Walters, S., 2005 |
Supplement to sediment-hosted lead-zinc deposits: A global perspective |
Appendix, in One hundreth anniversary volume 1905-2005, Edited by Hedenquist, J. W.; Thompson, J. F. H.; Goldfarb, R. J.; Richards, J. P., Ecomomic geology, Society of Ecomonic Geologists, 1136 p |
Leach, D. L.; Sangster, D. F.; Kelley, K. D.; Large, R. R.; Garven, G.; Allen, C. R.; Gutzmer, J.; Walters, S., 2005 |
Sediment-hosted lead-zinc deposits: A global perspective |
in One hundreth anniversary volume 1905-2005, Edited by Hedenquist, J. W.; Thompson, J. F. H.; Goldfarb, R. J.; Richards, J. P., Ecomomic geology, Society of Ecomonic Geologists, 1136 p, p. 561 - 607 |
|
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. |
Estimate date: 1986; 17.68 million metric tons ore; Combined with production?: yes; Provisional entry?: no; Resource category: probableGrade-commodity information: | Pb: 2.53 percent Zn: 6.43 percent Ag: 23 grams/metric ton |
Additional resources | Estimate date: 1986; 5.5 million metric tons ore; Combined with production?: yes; Provisional entry?: no; Resource category: probableGrade-commodity information: | barite: 84 percent | Reference: Andrew, C. J., 1995: The Silvermines District, Co. Tipperary, Ireland; in Irish Carbonate-Hosted Zn-Pb Deposits, Commemorating the SEG 75th Anniversary, Guidebook for Field Conference May 13-19, 1995, Edited by Anderson, K.; Ashton, J.; Earls, G.; Tear, S., Guidebook Series, Society of Economic Geologists, Citizen Printing Co. Inc., Fort Collins, Colorado 80521, 21, 296 p, p. 247 - 259 Percent weights allocated to deposit: 100.0% | Reference: Andrew, C. J., 1995: The Silvermines District, Co. Tipperary, Ireland; in Irish Carbonate-Hosted Zn-Pb Deposits, Commemorating the SEG 75th Anniversary, Guidebook for Field Conference May 13-19, 1995, Edited by Anderson, K.; Ashton, J.; Earls, G.; Tear, S., Guidebook Series, Society of Economic Geologists, Citizen Printing Co. Inc., Fort Collins, Colorado 80521, 21, 296 p, p. 247 - 259 Percent weights allocated to deposit: 100.0% |