General Information
Primary Commodities: silver, lead
Aliases: A-1 Zone
Deposit Type(s): Vein Polymetallic Ag-Pb-Zn+/-Au
Location(s): 61.530560 N, -132.159440 W
NTS Mapsheet(s): 105F09
Location Comments: .5 Kilometres
Hand Samples Available at YGS: No
Capsule
Work History
The Moose and Sheep claims (69921) were staked as fringe claims around the Hoey showing (Minfile Occurrence #105F 055) in Sep/54 by Prospectors Airways Company Ltd on behalf of a syndicate which included Noranda Exploration Company Ltd and Kerr Addison Gold Mines Ltd. The syndicate carried out trenching in 1955.
Restaked as Sid cl (75878) in Jul/61 by G.F. Dickson and as Eva cl (89101) in Feb/65 by a joint venture between Stump Mines Ltd and Silver Key Mines Ltd, which carried out grid soil sampling and bulldozer trenching in 1966, drilled 5 holes (289.6 m) in 1967, and completed more than 427 m of underground development in 1968-69. Silver Key changed its name to Nordev Resources Ltd in Feb/72; optioned the Stump interest in Aug/74; conducted a small feasibility study in 1975; and then abandoned its interests in the area.
Restaked in Mar/76 as Camp cl 5-8 (Y94453) by H. Regehr and associates, who carried out bulldozer trenching before forming a new company, Iona Silver Mines Ltd. Iona carried out additional trenching in 1977-78, drilled 3 holes (160.3 m) in 1978 on Camp cl 2. In Aug/79, Argorex Gesellschaft Zur obtained first right of refusal for production financing through an Iona option to TRV Minerals Corporation, which retained a 5% net smelter interest. In 1980, the lower adit was advanced 66.8 m.
Iona's claims were optioned in 1985 by Canamax Resources Inc, which carried out geochemical sampling and geophysical surveying later in the year. In 1987, Iona changed its name to Aigner Holdings Ltd and Canamax drilled one hole (95.1 m) on Camp cl 7. The claims were transferred back to Aigner Holdings in Dec/89.
Restaked as AT cl 1-4 (YB91866) in Nov/98 by Archer, Cathro and Associates (1981) Ltd which holds them on behalf of a private syndicate. A property examination was carried out in Jun/2000 for the syndicate at which time limited rock geochemical sampling was completed.
Capsule Geology
The A-1 vein was discovered by soil sampling in 1966 and was trenched for a length of over 850 m, of which 247 m grades 853.6 g/t Ag and 22.2% Pb over a width of 1.2 m. The vein strikes north, dips 60¿ west, and cuts Upper Cambian and Lower Ordovician thin bedded silty limestone. Mineralization consists of fine grained (steel) galena and pyrite with minor sphalerite, tetrahedrite and arsenopyrite in a carbonate gangue.
Drifting about 37 m below the surface outcrop developed a 202 m length grading 329.1 g/t Ag and 7.5% Pb over a 1.2 m width. A raise driven from the adit to within 3 m of surface graded 582.8 g/t Ag and 16.5% Pb over an average width of 1.4 m for a length of 40 m. In 1975, Nordev Resources released a pre-feasibility report which reported proven reserves of 36 280 tonnes grading 8.4% Pb and 353.1 g/t Ag (a search of records in the Energy Mines and Resources Library, Yukon Government could not locate a copy of the prefeasibility report).
The A-1 vein was cut at 251 m in the lower adit, where it was 1.5 m wide and weakly mineralized. Sixty-one metres from the collar, the lower adit intersected a 3.7 m wide unmineralized vein. The 1987 drilling did not intersect any significant mineralization.
Archer, Cathro¿s property examination in 2000 was hampered by lingering snow cover in the area but did serve to obtain valuable information pretaining to logistical limitations and mineability of the vein.
References
ARCHER, A.R., 1967. Geochemical Prospecting in the Ketza River District. Western Miner, Apr/67, p. 29-36.
ARCHER, CATHRO and ASSOCIATES LTD, Dec/2000. Assessment Report #094153 by W.D. Eaton.
CANAMAX RESOURCES INC, Sep/87. Assessment Report #091953 by S. Abercrombie and C.J. Hodgson.
CANAMAX RESOURCES INC, 1987. Assessment Report *#092929 by S. Abercrombie and C.J. Hodgson.
CATHRO, M.S., 1988. Gold and silver, lead deposits of the Ketza River District, Yukon: Preliminary results of field work; in Yukon Geology, Vol 2; Exploration and Geological Services Division, Yukon, Indian and Northern Affairs Canada, p. 8-25.
GEOLOGICAL SURVEY OF CANADA Paper 68-68, p. 75-76; Paper 69-55, p. 44-46.
GEORGE CROSS NEWSLETTER, 22 Dec/89.
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).
IONA SILVER MINE LTD, Mar/78. Assessment Report #091139 by A. Becker.
IONA SILVER MINE LTD, May/78. Assessment Report #061867 by T.L. Sadlier-Brown and A.E. Nevin.
IONA SILVER MINE LTD, Sep/78. Assessment Report #091141 by P.H. Sevensma.
IONA SILVER MINES LTD, 1978. Assessment Report *#091142 by P.H. Sevensma.
MINERAL INDUSTRY REPORT 1978, p. 61.
MORIN, J.A., 1989. Yukon Gold-Silver File; Exploration and Geological Services Division, Yukon, Indian and Northern Affairs Canada, Open File 1989-3, p. 61.
SILVER KEY MINES LTD and STUMP MINES LTD, Dec/67. Assessment Report #019895 by A.R. Archer.
SILVER KEY MINES LTD and STUMP MINES LTD, Jul/68. Assessment Report #019900 by A.R. Archer.
SILVER KEY MINES LTD and STUMP MINES LTD, Aug/68. Assessment Report #019897 by L. La Prairie.
SILVER KEY MINES LTD and STUMP MINES LTD, Sep/68. Assessment Report #019898 by L. La Prairie.
SILVER KEY MINES LTD and STUMP MINES LTD, Nov/68. Assessment Report #019899 by L. La Prairie.
STUMP MINES LTD, Sep/68. Assessment Report #018890 by R. Wilcox. (contains map and news clippings).
STUMP MINES LTD and SILVER KEY MINES LTD, May/68. Assessment Report #019902 by L. La Prairie.
STUMP MINES LTD and SILVER KEY MINES LTD, Jun/68. Assessment Report #019896 by L. La Prairie.
STUMP MINES LTD AND SILVER KEY MINES LTD, Aug/68. Assessment Report #092918 by L.LaPrairie.
STUMP MINES LTD AND SILVER KEY MINES LTD, Dec/68. Information Circular (contains map of underground drifting).
YUKON EXPLORATION 1987, p. 158-159.
The Moose and Sheep claims (69921) were staked as fringe claims around the Hoey showing (Minfile Occurrence #105F 055) in Sep/54 by Prospectors Airways Company Ltd on behalf of a syndicate which included Noranda Exploration Company Ltd and Kerr Addison Gold Mines Ltd. The syndicate carried out trenching in 1955.
Restaked as Sid cl (75878) in Jul/61 by G.F. Dickson and as Eva cl (89101) in Feb/65 by a joint venture between Stump Mines Ltd and Silver Key Mines Ltd, which carried out grid soil sampling and bulldozer trenching in 1966, drilled 5 holes (289.6 m) in 1967, and completed more than 427 m of underground development in 1968-69. Silver Key changed its name to Nordev Resources Ltd in Feb/72; optioned the Stump interest in Aug/74; conducted a small feasibility study in 1975; and then abandoned its interests in the area.
Restaked in Mar/76 as Camp cl 5-8 (Y94453) by H. Regehr and associates, who carried out bulldozer trenching before forming a new company, Iona Silver Mines Ltd. Iona carried out additional trenching in 1977-78, drilled 3 holes (160.3 m) in 1978 on Camp cl 2. In Aug/79, Argorex Gesellschaft Zur obtained first right of refusal for production financing through an Iona option to TRV Minerals Corporation, which retained a 5% net smelter interest. In 1980, the lower adit was advanced 66.8 m.
Iona's claims were optioned in 1985 by Canamax Resources Inc, which carried out geochemical sampling and geophysical surveying later in the year. In 1987, Iona changed its name to Aigner Holdings Ltd and Canamax drilled one hole (95.1 m) on Camp cl 7. The claims were transferred back to Aigner Holdings in Dec/89.
Restaked as AT cl 1-4 (YB91866) in Nov/98 by Archer, Cathro and Associates (1981) Ltd which holds them on behalf of a private syndicate. A property examination was carried out in Jun/2000 for the syndicate at which time limited rock geochemical sampling was completed.
Capsule Geology
The A-1 vein was discovered by soil sampling in 1966 and was trenched for a length of over 850 m, of which 247 m grades 853.6 g/t Ag and 22.2% Pb over a width of 1.2 m. The vein strikes north, dips 60¿ west, and cuts Upper Cambian and Lower Ordovician thin bedded silty limestone. Mineralization consists of fine grained (steel) galena and pyrite with minor sphalerite, tetrahedrite and arsenopyrite in a carbonate gangue.
Drifting about 37 m below the surface outcrop developed a 202 m length grading 329.1 g/t Ag and 7.5% Pb over a 1.2 m width. A raise driven from the adit to within 3 m of surface graded 582.8 g/t Ag and 16.5% Pb over an average width of 1.4 m for a length of 40 m. In 1975, Nordev Resources released a pre-feasibility report which reported proven reserves of 36 280 tonnes grading 8.4% Pb and 353.1 g/t Ag (a search of records in the Energy Mines and Resources Library, Yukon Government could not locate a copy of the prefeasibility report).
The A-1 vein was cut at 251 m in the lower adit, where it was 1.5 m wide and weakly mineralized. Sixty-one metres from the collar, the lower adit intersected a 3.7 m wide unmineralized vein. The 1987 drilling did not intersect any significant mineralization.
Archer, Cathro¿s property examination in 2000 was hampered by lingering snow cover in the area but did serve to obtain valuable information pretaining to logistical limitations and mineability of the vein.
References
ARCHER, A.R., 1967. Geochemical Prospecting in the Ketza River District. Western Miner, Apr/67, p. 29-36.
ARCHER, CATHRO and ASSOCIATES LTD, Dec/2000. Assessment Report #094153 by W.D. Eaton.
CANAMAX RESOURCES INC, Sep/87. Assessment Report #091953 by S. Abercrombie and C.J. Hodgson.
CANAMAX RESOURCES INC, 1987. Assessment Report *#092929 by S. Abercrombie and C.J. Hodgson.
CATHRO, M.S., 1988. Gold and silver, lead deposits of the Ketza River District, Yukon: Preliminary results of field work; in Yukon Geology, Vol 2; Exploration and Geological Services Division, Yukon, Indian and Northern Affairs Canada, p. 8-25.
GEOLOGICAL SURVEY OF CANADA Paper 68-68, p. 75-76; Paper 69-55, p. 44-46.
GEORGE CROSS NEWSLETTER, 22 Dec/89.
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).
IONA SILVER MINE LTD, Mar/78. Assessment Report #091139 by A. Becker.
IONA SILVER MINE LTD, May/78. Assessment Report #061867 by T.L. Sadlier-Brown and A.E. Nevin.
IONA SILVER MINE LTD, Sep/78. Assessment Report #091141 by P.H. Sevensma.
IONA SILVER MINES LTD, 1978. Assessment Report *#091142 by P.H. Sevensma.
MINERAL INDUSTRY REPORT 1978, p. 61.
MORIN, J.A., 1989. Yukon Gold-Silver File; Exploration and Geological Services Division, Yukon, Indian and Northern Affairs Canada, Open File 1989-3, p. 61.
SILVER KEY MINES LTD and STUMP MINES LTD, Dec/67. Assessment Report #019895 by A.R. Archer.
SILVER KEY MINES LTD and STUMP MINES LTD, Jul/68. Assessment Report #019900 by A.R. Archer.
SILVER KEY MINES LTD and STUMP MINES LTD, Aug/68. Assessment Report #019897 by L. La Prairie.
SILVER KEY MINES LTD and STUMP MINES LTD, Sep/68. Assessment Report #019898 by L. La Prairie.
SILVER KEY MINES LTD and STUMP MINES LTD, Nov/68. Assessment Report #019899 by L. La Prairie.
STUMP MINES LTD, Sep/68. Assessment Report #018890 by R. Wilcox. (contains map and news clippings).
STUMP MINES LTD and SILVER KEY MINES LTD, May/68. Assessment Report #019902 by L. La Prairie.
STUMP MINES LTD and SILVER KEY MINES LTD, Jun/68. Assessment Report #019896 by L. La Prairie.
STUMP MINES LTD AND SILVER KEY MINES LTD, Aug/68. Assessment Report #092918 by L.LaPrairie.
STUMP MINES LTD AND SILVER KEY MINES LTD, Dec/68. Information Circular (contains map of underground drifting).
YUKON EXPLORATION 1987, p. 158-159.
Location Map
Last Updated: Jul 5, 2018
Work History
| Year | Work Type | Comment |
|---|---|---|
| 2000 | Geochemistry: Rock | Resampled showings. |
| 1987 | Drilling: Diamond | One hole, 95.1 m. |
| 1985 | Geochemistry: Soil | |
| 1980 | Development, Underground: Drifting/Raising | Advanced adit 66.75 m. |
| 1978 | Drilling: Diamond | Three holes, 160.3 m. |
| 1978 | Trenching | |
| 1977 | Trenching | |
| 1976 | Trenching: Mechanical | |
| 1975 | Studies: Feasibility | |
| 1968 | Development, Underground: Drifting/Raising | Drove 426.7 m of drift. Includes 35.66 m of X-cutting. Completed between 1968 and 1969. |
| 1967 | Drilling: Diamond | Five holes, 289.56 m. |
| 1966 | Geochemistry: Soil | |
| 1966 | Trenching: Mechanical | |
| 1955 | Trenching |
Regional Geology - Terrane
Group: Ancestral North America
Affinity: W Laurentia
Name: Cassiar
Realm: Laurentia
Regional Geology - Bedrock
Supergroup:
Group/Suite: Kechika
Formation:
Member:
Terrane: Cassiar
Period Max: Cambrian
Age Max: 500 MA
Period Min: Ordovician
Age Min: 472 MA
Rock Major: slate/phyllite/limestone
Rock Minor: dolostone/basalt/tuff/flows/sills
Reference: Tempelman-Kluit (1977) - GSC OF 486
Geological Unit (1M): COK
Geological Unit (250K): COK1
Assessment Reports that overlap occurrence
| Report Number | Year | Title | Worktypes | Holes Drilled | Meters Drilled |
|---|---|---|---|---|---|
| 095235 | 2009 | Assessment Report Describing 2009 Soil Geochemistry and Prospecting at the Stump Property | Rock - Geochemistry, Soil - Geochemistry, Soil - Geochemistry | ||
| 095017 | 2007 | Assessment Report Describing Excavator Trenching and Bulk Sampling at the Stump Property | Bulk Sample - Lab Work/Physical Studies, Bulk Sample - Lab Work/Physical Studies, Backhoe - Trenching, Mechanical - Trenching | ||
| 094795 | 2006 | Assessment Report Describing Trench Sampling and Metallurgical Testing at the Stump Property | Metallurgical Tests - Lab Work/Physical Studies, Backhoe - Trenching | ||
| 094153 | 2000 | Assessment Report Describing Geological and Logistical Evaluation on the AT 1-4 Claims | Rock - Geochemistry | ||
| 093455 | 1995 | General Prospecting Report on the Stew Project | Rock - Geochemistry, Soil - Geochemistry | ||
| 092929 | 1987 | 1987 Drilling Assessment Report | All Weather Road - Development, Surface, Diamond - Drilling, Diamond - Drilling | 20 | 1787.30 |
| 091863 | 1986 | 1986 Geochemical and Trenching Assessment Report | All Weather Road - Development, Surface, Soil - Geochemistry, Mechanical - Trenching | ||
| 091871 | 1986 | 1986 Drilling Assessment Report | Diamond - Drilling | 13 | 603.80 |
| 061651 | 1978 | Summary Report | Data Compilation - Pre-existing Data | ||
| 018890 | 1968 | Report and Findings of Visit to Ketza River Properties Ross River, Yukon Territory | Magnetic - Development, Underground, Data Compilation - Pre-existing Data, Research/Summarize - Pre-existing Data | ||
| 019896 | 1968 | Progress Report | Drifting/Raising - Development, Underground, Rehabilitation - Development, Underground, Tunnelling - Development, Underground | ||
| 019899 | 1968 | Progress Report | Drifting/Raising - Development, Underground, Rehabilitation - Development, Underground, Tunnelling - Development, Underground | ||
| 019897 | 1968 | Progress Report | Drifting/Raising - Development, Underground, Rehabilitation - Development, Underground, Tunnelling - Development, Underground | ||
| 019900 | 1968 | Report on the Ketza River Property, Yukon for Silver Key Mines Ltd. & Stump Mines Ltd. | Drifting/Raising - Development, Underground, Rehabilitation - Development, Underground, Tunnelling - Development, Underground, Soil - Geochemistry, Data Compilation - Pre-existing Data | ||
| 018889 | 1968 | Final Report on 1968 Geochemical Exploration Program | Soil - Geochemistry | ||
| 019898 | 1968 | Progress Report | Magnetic - Development, Underground, Soil - Geochemistry, Bulk Sample - Lab Work/Physical Studies | ||
| 019895 | 1967 | Report on Ketza River Property, Yukon for Silver Key Mines Ltd. & Stump Mines Ltd. | Research/Summarize - Pre-existing Data | ||
| 018888 | 1966 | Report on the Ketza River Property, Yukon for Silver Key Mines Ltd. and Stump Mines Ltd. | Rock - Geochemistry, Soil - Geochemistry, Hand - Trenching |
