CANADIAN AND WORLD MINERAL DEPOSIT DATABASES
Geological Survey of Canada


Deposit number Country Location Names Commodities
78 Ireland (County Tipperary) 52.47.38 N -- 008.15.59 W Silvermines Zn; Pb; Ag; barite
 
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 marine
Individual lithologies:sandstone-conglomerate
Host rock stratigraphy:Basal Clastics Unit member

(2) sedimentary; carbonate; Depositional setting: Shallow marine
Individual lithologies:biosparite
Host rock stratigraphy:Lower Dolomite member

(3) sedimentary; carbonate; Depositional setting: Shallow marine
Individual lithologies:reef limestone
reef limestone breccia
dolomitized reef limestone breccia
dolomite breccia
Host rock stratigraphy:Waulsortian Limestone member

(4) sedimentary; chert; Depositional setting: Shallow marine
Individual 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: probable
Grade-commodity information:Pb: 2.53 percent
Zn: 6.43 percent
Ag: 23 grams/metric ton
Additional resourcesEstimate date: 1986; 5.5 million metric tons ore; Combined with production?: yes; Provisional entry?: no; Resource category: probable
Grade-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%

Generated 2015-02-06 15:01:20 with GQuery -- 3.7 ADO (3.19..3.22 -- 2008-12-16)
GlobalDB System, Geological Survey of Canada, Natural Resources Canada