CANADIAN AND WORLD MINERAL DEPOSIT DATABASES
Geological Survey of Canada


 
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): Bear-Twit
Longitude / Latitude: -129.41667 / 64.03333
Political location(s): Canada; Province or state: Northwest Territories
NTS map data: 106A03 (Caribou Cry Rapids)
Deposit clan (type): Mississippi Valley-type
Deposit status: deposit
Geologic subprovince: Mackenzie Shelf
Commodities: Zn; Pb
Mineralization styles: discordant collapse breccia cement; veins
Geological ages: Late Silurian - Early Devonian (host rocks)
Tectonic setting: continental platform (host rocks)
Host rocks: (1) sedimentary; carbonate; Depositional setting: Shallow-water carbonates
Internal host rock structures:breccia
veins
Individual lithologies:dolostone
Host rock stratigraphy:Delorme formation
Mineralogy: sphalerite, galena, tetrahedrite, quartz, calcite, sphalerite, galena
References:
Brock, J., 1973
Notes for Delivery about Welcome North's Interest in Godlin Lake, Northwest Territories (unpublished)
Mineral Exploration Group, 13 p.

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

Murphy, J. D., 1973
Mineral Showings on Welcome North Mines Ltd.'s Property in the Godlin Lakes Area 105 P/14,15 and 106 A/3 (63 50'N, 129 20'W)
Resident Geologist Report, Indian Affairs and Northern Development Canada, 12 p.

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: 1977; 8 million short tons ore; Combined with production?: no; Provisional entry?: no; Resource category: inferred
Grade-commodity information:Zn: 2.27 percent
Pb: 1.13 percent
Reference: Heddle, D. W., 1977: Report on Reserves and Inferred Potential for Tulsequah Chief, Big Bull, Duncan and Bear Twit Properties (unpublished); Cominco Limited, 2 p.
Percent weights allocated to deposit: 100.0%

Generated 2015-02-06 15:20:53 with GQuery -- 3.7 ADO (3.19..3.22 -- 2008-12-16)
GlobalDB System, Geological Survey of Canada, Natural Resources Canada