General Information
Secondary Commodities: tin
Aliases: Tin Dome
Deposit Type(s): Manto & Stockwork Sn
Location(s): 64.040830 N, -135.834170 W
NTS Mapsheet(s): 106D04
Location Comments: .5 Kilometres
Hand Samples Available at YGS: Yes
Capsule
Work History
Tin was first recognized in the placer concentrates from Dublin Gulch in 1940. The source was staked as First, etc cl (55276) in Aug/43 by E.R. Sheppard and H. Ray for Mining Corporation of Canada Ltd, a Noranda subsidiary, which carried out hand trenching and sampling. The Consolidated Mining and Smelting Company of Canada Ltd (Cominco) is reported to have carried out additional trenching and to have driven a cross-cut below the vein in 1945.
Restaked as Arpa cl 1-40 (Y31687) in Feb/67 by C. Provencher and J.H. Boyce; as Stew cl 1-2 (Y33327) in Apr/70; as Rhonda cl 1-4 (Y68349) in Jul/72 by R. Holway; and as Dog cl 1-22 (Y97149) in Nov/74 by H. Fromme.
Restaked as DG cl 1-56 (YA14944) in Apr/77 by G. Dickson. The DG claims were optioned to Canada Tungsten Mining Corporation Ltd in the spring of 1978, which carried out prospecting, reconnaissance and detailed geological mapping, geochemical rock, soil and stream sediment sampling, trenching and magnetometer surveying from 1978-81. The claims were transferred back to Dickson in Jan/86.
Can-Pro Development Ltd optioned the DG claims as part of a larger block in the Dublin Gulch area in 1989. Ivanhoe Goldfields Ltd optioned Can-Pro's claims in 1991 and subsequently optioned them to Amax Gold (B.C.) Ltd, which in 1992 drilled 2 rotary holes (216.4 m); one each on the Smoky cl 52 and DG cl 9.
In Aug/94 First Dynasty Mines Ltd acquired Ivanhoe Goldfields Ltd. In 1995, First Dynasty and in 1996 its wholly owned subsidiary, New Millennium Mining Ltd carried out a major drilling program to outline a resource/reserve on the Eagle Zone (Minfile Occurrence #106D 025). The companies also carried out diamond drilling on Potato Hill (Minfile Occurrence #106D 026) to test for mineralization under the proposed heap leach pad area. In Sept/95 Ivanhoe staked fractional Roni cl 1-13 (YB64630) in and around the Smoky claims.
Restaked as Tin Dome cl 1-12 (YC02842) in Aug/2001 by B. Walden and K. Benson who carried out prospecting and rock geochemical sampling in 2001 and 2002.
Capsule Geology
The area is underlain by deformed Late Proterozoic Yusezyu Formation clastic rocks of the Hyland Group that have been intruded by Late Cretaceous Tombstone Plutonic Suite stocks, dykes and sills. Alteration and gold and tungsten mineralization is directly associated with the intrusions.
Resinous, yellow-to-brown, finely crystalline cassiterite occurs in a vein or breccia zone about 0.9 m wide, which cuts quartzite of the Hyland Group. Coarse fragments of float are composed of smaller, angular fragments of vein quartz, quartzite and quartz-mica schist, packed in with chlorite, tourmaline, vein quartz, limonite and minor pyrite. The mineralization shows evidence of extreme brecciation and fine green tourmaline is particularly abundant.
Lenses of tourmaline up to 7 cm long and 1.3 cm wide consist of aggregates of finely crystalline hairs. Cassiterite is seldom visible to the naked eye and occurs as small patches or nests or as disseminated crystals. Three channel samples by the Geological Survey of Canada assayed 1.53%, 1.53% and 0.83% tin. Cominco's sampling averaged less than 0.3% tin (all assay information from Geological Survey of Canada Bulletin 111, p. 85).
Work carried out in 2002 on the Tin Dome claims was focused to the north in the vicinity of Minfile Occurrence #106D 023 and consisted of prospecting and geochemical sampling which failed to locate the source of massive arsenopyrite float boulders discovered the previous year.
References
CANADA TUNGSTEN MINING CORPATION LTD, May/79. Assessment Report #090471 by W.B. Lennan.
CANADA TUNGSTEN MINING CORPORATION LTD, Mar/81. Assessment Report #090790 by G.D. Nordin.
CANADA TUNGSTEN MINING CORPORATION LTD, Dec/81. Assessment Report #090915 by G.M. Rodgers.
CAN-PRO DEVELOPMENT LTD, Feb/90. Assessment Report #092841 by D. Philpot.
FIRST DYNASTY MINES LTD, 1995. Annual Report.
FIRST DYNASTY MINES LTD, Mar/96. Assessment Report #093409 by M. Sieb.
GEOLOGICAL SURVEY OF CANADA, Bulletin 111, p. 84-85.
GEOLOGICAL SURVEY OF CANADA, Economic Geology Report NO. 28, p. 73-74.
GEORGE CROSS NEWSLETTER, 30 Dec/92.
GORDEY, S.P. AND MAKEPEACE, A.J. 2003: Yukon Digital Geology, version 2.0, S.P. Gordey and A.J. Makepeace (comp); Geological Survey of Canada, Open File 1749 and Yukon Geological Survey, Open File 2003-9 (D).
MINERAL INDUSTRY REPORT 1969 and 1970, p. 18-19; 1978, p. 14-15.
PROVENCHER, C., Dec/69. Assessment Report #060185 by R.G. Hilker.
ROOTS, C.F., 1997. Bedrock geology of Mayo area, central Yukon (105M). Exploration and Geological Services Division, Indian and Northern Affairs Canada, Geoscience Map 1997-1, 1:50 000 scale.
ROOTS, C.F., 1997. Geology of the Mayo Map Area, Yukon Territory (105M). Exploration and Geological Services Division, Yukon, Indian and Northern Affairs Canada, Bulletin 7, 82 p.
THOMPSON, R.W., 1945. An occurrence of cassiterite at Dublin Gulch, Y.T. Economic Geology, 1945, p. 142-147.
WALDEN, B. and BENSEN, K., Mar/2003. Assessment Report #094404 by R.A. Doherty.
WHITEHORSE STAR, 14 Jun/95; 21 Sep/95.
YUKON EXPLORATION 1985-86, p. 293-295.
YUKON EXPLORATION AND GEOLOGY 1995, p.8, 33. 1996, 13-14, 30, 32. 1997, p. 12, 35.
YUKON GEOLOGY AND EXPLORATION 1979-80, p. 238-240.
Tin was first recognized in the placer concentrates from Dublin Gulch in 1940. The source was staked as First, etc cl (55276) in Aug/43 by E.R. Sheppard and H. Ray for Mining Corporation of Canada Ltd, a Noranda subsidiary, which carried out hand trenching and sampling. The Consolidated Mining and Smelting Company of Canada Ltd (Cominco) is reported to have carried out additional trenching and to have driven a cross-cut below the vein in 1945.
Restaked as Arpa cl 1-40 (Y31687) in Feb/67 by C. Provencher and J.H. Boyce; as Stew cl 1-2 (Y33327) in Apr/70; as Rhonda cl 1-4 (Y68349) in Jul/72 by R. Holway; and as Dog cl 1-22 (Y97149) in Nov/74 by H. Fromme.
Restaked as DG cl 1-56 (YA14944) in Apr/77 by G. Dickson. The DG claims were optioned to Canada Tungsten Mining Corporation Ltd in the spring of 1978, which carried out prospecting, reconnaissance and detailed geological mapping, geochemical rock, soil and stream sediment sampling, trenching and magnetometer surveying from 1978-81. The claims were transferred back to Dickson in Jan/86.
Can-Pro Development Ltd optioned the DG claims as part of a larger block in the Dublin Gulch area in 1989. Ivanhoe Goldfields Ltd optioned Can-Pro's claims in 1991 and subsequently optioned them to Amax Gold (B.C.) Ltd, which in 1992 drilled 2 rotary holes (216.4 m); one each on the Smoky cl 52 and DG cl 9.
In Aug/94 First Dynasty Mines Ltd acquired Ivanhoe Goldfields Ltd. In 1995, First Dynasty and in 1996 its wholly owned subsidiary, New Millennium Mining Ltd carried out a major drilling program to outline a resource/reserve on the Eagle Zone (Minfile Occurrence #106D 025). The companies also carried out diamond drilling on Potato Hill (Minfile Occurrence #106D 026) to test for mineralization under the proposed heap leach pad area. In Sept/95 Ivanhoe staked fractional Roni cl 1-13 (YB64630) in and around the Smoky claims.
Restaked as Tin Dome cl 1-12 (YC02842) in Aug/2001 by B. Walden and K. Benson who carried out prospecting and rock geochemical sampling in 2001 and 2002.
Capsule Geology
The area is underlain by deformed Late Proterozoic Yusezyu Formation clastic rocks of the Hyland Group that have been intruded by Late Cretaceous Tombstone Plutonic Suite stocks, dykes and sills. Alteration and gold and tungsten mineralization is directly associated with the intrusions.
Resinous, yellow-to-brown, finely crystalline cassiterite occurs in a vein or breccia zone about 0.9 m wide, which cuts quartzite of the Hyland Group. Coarse fragments of float are composed of smaller, angular fragments of vein quartz, quartzite and quartz-mica schist, packed in with chlorite, tourmaline, vein quartz, limonite and minor pyrite. The mineralization shows evidence of extreme brecciation and fine green tourmaline is particularly abundant.
Lenses of tourmaline up to 7 cm long and 1.3 cm wide consist of aggregates of finely crystalline hairs. Cassiterite is seldom visible to the naked eye and occurs as small patches or nests or as disseminated crystals. Three channel samples by the Geological Survey of Canada assayed 1.53%, 1.53% and 0.83% tin. Cominco's sampling averaged less than 0.3% tin (all assay information from Geological Survey of Canada Bulletin 111, p. 85).
Work carried out in 2002 on the Tin Dome claims was focused to the north in the vicinity of Minfile Occurrence #106D 023 and consisted of prospecting and geochemical sampling which failed to locate the source of massive arsenopyrite float boulders discovered the previous year.
References
CANADA TUNGSTEN MINING CORPATION LTD, May/79. Assessment Report #090471 by W.B. Lennan.
CANADA TUNGSTEN MINING CORPORATION LTD, Mar/81. Assessment Report #090790 by G.D. Nordin.
CANADA TUNGSTEN MINING CORPORATION LTD, Dec/81. Assessment Report #090915 by G.M. Rodgers.
CAN-PRO DEVELOPMENT LTD, Feb/90. Assessment Report #092841 by D. Philpot.
FIRST DYNASTY MINES LTD, 1995. Annual Report.
FIRST DYNASTY MINES LTD, Mar/96. Assessment Report #093409 by M. Sieb.
GEOLOGICAL SURVEY OF CANADA, Bulletin 111, p. 84-85.
GEOLOGICAL SURVEY OF CANADA, Economic Geology Report NO. 28, p. 73-74.
GEORGE CROSS NEWSLETTER, 30 Dec/92.
GORDEY, S.P. AND MAKEPEACE, A.J. 2003: Yukon Digital Geology, version 2.0, S.P. Gordey and A.J. Makepeace (comp); Geological Survey of Canada, Open File 1749 and Yukon Geological Survey, Open File 2003-9 (D).
MINERAL INDUSTRY REPORT 1969 and 1970, p. 18-19; 1978, p. 14-15.
PROVENCHER, C., Dec/69. Assessment Report #060185 by R.G. Hilker.
ROOTS, C.F., 1997. Bedrock geology of Mayo area, central Yukon (105M). Exploration and Geological Services Division, Indian and Northern Affairs Canada, Geoscience Map 1997-1, 1:50 000 scale.
ROOTS, C.F., 1997. Geology of the Mayo Map Area, Yukon Territory (105M). Exploration and Geological Services Division, Yukon, Indian and Northern Affairs Canada, Bulletin 7, 82 p.
THOMPSON, R.W., 1945. An occurrence of cassiterite at Dublin Gulch, Y.T. Economic Geology, 1945, p. 142-147.
WALDEN, B. and BENSEN, K., Mar/2003. Assessment Report #094404 by R.A. Doherty.
WHITEHORSE STAR, 14 Jun/95; 21 Sep/95.
YUKON EXPLORATION 1985-86, p. 293-295.
YUKON EXPLORATION AND GEOLOGY 1995, p.8, 33. 1996, 13-14, 30, 32. 1997, p. 12, 35.
YUKON GEOLOGY AND EXPLORATION 1979-80, p. 238-240.
Location Map
Last Updated: Sep 15, 2011
Work History
| Year | Work Type | Comment |
|---|---|---|
| 2002 | Other | |
| 2002 | Other | |
| 2001 | Other | |
| 2001 | Other | |
| 1996 | Studies: Feasibility | |
| 1995 | Studies: Feasibility | |
| 1992 | Drilling: Rotary | Number of holes drilled: 2 Amount of work done: 216.4 METRES |
| 1980 | Geochemistry: Soil | |
| 1980 | Geology: Bedrock Mapping | |
| 1980 | Other | |
| 1979 | Geochemistry: Soil | |
| 1979 | Geology: Bedrock Mapping | |
| 1979 | Other | |
| 1979 | Trenching: Mechanical | |
| 1978 | Geochemistry: Soil | |
| 1978 | Geology: Bedrock Mapping | |
| 1978 | Other | |
| 1945 | Trenching: Hand | |
| 1943 | Other | |
| 1943 | Trenching: Hand |
Regional Geology - Terrane
Group: Ancestral North America
Affinity: W Laurentia
Name: North America - basinal strata
Realm: Laurentia
Regional Geology - Bedrock
Supergroup: Windermere
Group/Suite: Hyland
Formation: Yusezyu
Member:
Terrane: Laurentia
Period Max: Ediacaran
Age Max: 635 MA
Period Min: Ediacaran
Age Min: 542 MA
Rock Major: phyllite/shale/sandstone/grit/conglomerate/limestone
Rock Minor: marble
Reference: Green & Roddick (1972) - GSC Map 1283A
Geological Unit (1M): PCH
Geological Unit (250K): PCH6
Assessment Reports that overlap occurrence
| Report Number | Year | Title | Worktypes | Holes Drilled | Meters Drilled |
|---|---|---|---|---|---|
| 097130 | 2017 | Assessment Report on the VBW Claims: Geological, Geochemical and Remote Sensing Exploration Program - 2017 | Magnetic - Airborne Geophysics, Rock - Geochemistry, Soil - Geochemistry, Bedrock Mapping - Geology, LIDAR - Remote Sensing | ||
| 096209 | 2010 | 2010 Dublin Gulch Exploration Geology Program | All Weather Road - Development, Surface, Auger - Drilling, Diamond - Drilling, Drill Core - Geochemistry, Rock - Geochemistry, Tailings - Geochemistry, Water - Geochemistry, Bulk Sample - Lab Work/Physical Studies, Prospecting - Other, Environmental Assessment/Impact - Studies, Geotechnical - Studies | 84 | 11072.39 |
| 095673 | 2009 | 2009 Dublin Gulch Exploration Program | Auger - Drilling, Diamond - Drilling, Drill Core - Geochemistry, Hand - Trenching | 28 | 5121.50 |
| 095592 | 2006 | 2006 Dublin Gulch Exploration Program | Diamond - Drilling, Drill Core - Geochemistry, Rock - Geochemistry, Soil - Geochemistry, Hand - Trenching | 10 | 4281.51 |
| 094577 | 2004 | 2004 [Dublin Gulch] Geochemical Soil Sampling | Soil - Geochemistry | ||
| 094788 | 2004 | 2004 [Dublin Gulch] Geophysical Survey | Electromagnetic - Airborne Geophysics, Magnetic - Airborne Geophysics | ||
| 091387 | 1982 | Dublin Gulch 1982 Assessment Dill Logs & Trench Geology | Diamond - Drilling, Drill Core - Geochemistry, Rock - Geochemistry, Mechanical - Trenching | 3 | 738.24 |
| 090915 | 1981 | 1981 Exploration Program, Dublin Gulch | Rock - Geochemistry, Silt - Geochemistry, Soil - Geochemistry, Bedrock Mapping - Geology, Prospecting - Other, Mechanical - Trenching | ||
| 090564 | 1979 | Geological, Geochemical, and Geophysical Report | Rock - Geochemistry, Silt - Geochemistry, Soil - Geochemistry, Bedrock Mapping - Geology, EM - Ground Geophysics, Seismic - Ground Geophysics, Research/Summarize - Pre-existing Data | ||
| 090614 | 1979 | 1979 - Project Report - Dublin Gulch Property Claim Groups A-L & Ungrouped Claims Geology, Geochemistry, Geophysics, Diamond Drilling | Diamond - Drilling, Drill Core - Geochemistry, Rock - Geochemistry, Silt - Geochemistry, Soil - Geochemistry, Bedrock Mapping - Geology, Magnetics - Ground Geophysics, Prospecting - Other, Backhoe - Trenching | 28 | 3114.20 |
| 090482 | 1978 | 1978 Project Report on the Secret Creek Property | Orthophoto - Airphotography, Silt - Geochemistry, Soil - Geochemistry, Bedrock Mapping - Geology, Detailed Bedrock Mapping - Geology, Line Cutting - Other, Prospecting - Other, Surveying - Other, Mechanical - Trenching | ||
| 090471 | 1978 | 1978 Project Report on the Dublin Gulch Property | Orthophoto - Airphotography, Rock - Geochemistry, Silt - Geochemistry, Soil - Geochemistry, Bedrock Mapping - Geology, Magnetics - Ground Geophysics, Prospecting - Other | ||
| 060841 | 1970 | Summary Report on Potato Hills Tungsten | Research/Summarize - Pre-existing Data | ||
| 060185 | 1969 | Tungsten Prospect Dublin Gulch and Haggart Creek Property Evaluation | Rock - Geochemistry, Detailed Surficial Mapping - Geology, Prospecting - Other, Research/Summarize - Pre-existing Data, Preliminary Economic Assessment - Studies | ||
| 062258 | 1965 | [Summary of the Peso Silver Mines Ltd. Properties] | Data Compilation - Pre-existing Data, Research/Summarize - Pre-existing Data, Resource Estimate - Studies | ||
| 092069 | 1964 | Prospectus on the Mayo Silver Mines Ltd. | Property Evaluation - Other, Preliminary Economic Assessment - Studies |
Related References
| Number | Title | Page(s) | Document Type |
|---|---|---|---|
| ARMC007457 | Wedge EM survey results map - E. Barker property - Haggart Creek | Geophysical Map | |
| ARMC007458 | Property Information Form - E.H. Barker lode claims, Haggart Creek | Report | |
| ARMC007459 | Topographic map with field notes - Dublin Gulch | Geoscience Map (General) | |
| ARMC007460 | Sketch map - Geology - Haggart Creek - 100 CL-group | Geoscience Map (General) | |
| ARMC007461 | Sketch map - JEM survey - Haggart Creek | Geoscience Map (General) | |
| ARMC007463 | Mayo claim sheet - 106-D-4 - Haggart Creek and Dublin Gulch | Geoscience Map (General) | |
| ARMC007466 | Correspondence Re: Barker lode claims - Galena Hill | Miscellaneous Company Documents | |
| ARMC014781 | Final report 1964 - Mayo Silver Mines Ltd. (N.P.L.) - Mayo, Yukon | Report |
| Citations |
|---|
