General Information
Deposit Type(s): Unknown
Location(s): 63.988060 N, -139.379720 W
NTS Mapsheet(s): 115O14
Location Comments: 1 Kilometres
Hand Samples Available at YGS: No
Capsule
Work History
Staked as Nug cl (Y65405) in May/72 by Sullivan and Rogers and optioned by a joint venture between Anglo American and Exploram, who performed a magnetic survey and mapping in 1973-74. Restaked as Dawson & 83 cl (YA79281) in Sep/83 by Perron Gold Corp and Texoro Res L, which explored with geochem and airborne EM surveys in 1983 and mag and VLF-EM surveys in 1986.
In fall, 1990, a joint venture consisting of Ebony Gold and Klondike Reef Mines conducted IP and resistivity surveys on the Dawson 9-12 and Ebony 21-22 claims. The Dawson 1-140 and 201-248 claims were transferred to Kennecott Canada Inc in May/93 as part of an option agreement. Kennecott carried out geological mapping on the Dawson claims in 1993 and re-processed helicopter geophysical data previously flown over the claims. In 1994 Kennecott explored airborne magnetic anomalies with ground magnetic surveys, followed by auger soil sampling. In Jan/95 Kennecott dropped its option. In the same month, the Sury claims were transferred to Sultan Minerals Inc. In Jan/96 Arbor Resources changed its name to Klondike Gold Corp.
Capsule Geology
The area is mainly underlain by quartz and feldspar augen-bearing quartz-muscovite schist of the Permian Klondike Schist Assemblage (unit Psa), cut by pyritic porphyry dykes and narrow quartz veins. The augen schist is interpreted to be a felsic metaporphyry, and narrow discontinuous bands of carbonaceous and rusty weathering felsic schist within this unit are thought to represent deformed pendants and screens within the intrusive body.
The 1990 geophysical survey tested IP and resistivity responses in an area of known placer potential.
Soil geochemistry conducted in 1993 by Kennecott Canada Inc showed that the area of the Sury and Dawson claims was anomalous in base and precious metals. Re-processing of previous geophysical data outlined a strong magnetic high in the Sourdough Gulch area. Ground magnetic surveys associated the anomaly with a previously unmapped, magnetite-bearing hornblende-biotite granodiorite intrusion. Prospecting and mapping indicated the presence of pyritic, hornfelsed schists around the intrusion. The hornfels are cut by a diverse suite of mafic and felsic dykes emanating from the intrusion. Rock samples from the hornfels returned weakly anomalous Au values. The best assay was 0.68 g/t Au from a quartz-pyrite stringer.
Kennecott drilled a total of 215 auger holes ( 1 m in depth) over the magnetic anomaly and identified a discontinuous +10 ppb Au anomaly on the southern flank. Three trenches over the soil anomaly produced intermittent quartz-veined quartz muscovite schist. One sample of schist returned a weakly anomalous assay of 85 ppb Au. A fourth trench across the centre of the magnetic anomaly exposed deeply weathered, barren granodiorite.
At the 77 Pup area located 1.5 km north of Sourdough Gulch, Kennecott outlined two small airborne magnetic anomalies. Ground magnetic surveys further delineated the anomalies. Prospecting and mapping
identified several northeasterly striking magnetite-bearing feldspar-hornblende-biotite porphyry dykes in the area. Fifty three auger soil samples collected over the anomaly were barren.
References
ARBOR RESOURCES LTD, STANDARD GOLD MINES LTD and GALLANT GOLD MINES LTD, Nov/87. Assessment Report *#091981 by Z. Dvorak.
DEBICKI, R.L., 1984. Bedrock geology and mineralization of the Klondike area (west), 115 O/14, 15 and 116B 2,3. Exploration and Geological Services Division, DIAND, Open File.
GEORGE CROSS NEWSLETTER, 30 Aug/94; 10 Nov/94; 23 Jan/96.
KENNECOTT CANADA INC, Jun/94. Assessment Report #093209 by R. Cranswick and A. Doyle.
KENNECOTT CANADA INC, Jul/95. Assessment Report #093321 by R. Cranswick, S. de Wit and A. Vary.
KLONDIKE REEF MINES LTD, 1991. Assessment Report #092972 by D.G. Mark.
MORTENSEN, J.K., Geological Compilation Maps of the Northern Stewart River map area Klondike and Sixtymile Districts (115N/15,16; 115O/13,14 and parts of 115O/15,16). Exploration and Geological Services Division, Yukon, Indian and Northern Affairs Canada, Open file 1996-1 (G).
YUKON EXPLORATION 1987, p. 296-299.
YUKON EXPLORATION & GEOLOGY 1994, p. 9, 11, 12.
Staked as Nug cl (Y65405) in May/72 by Sullivan and Rogers and optioned by a joint venture between Anglo American and Exploram, who performed a magnetic survey and mapping in 1973-74. Restaked as Dawson & 83 cl (YA79281) in Sep/83 by Perron Gold Corp and Texoro Res L, which explored with geochem and airborne EM surveys in 1983 and mag and VLF-EM surveys in 1986.
In fall, 1990, a joint venture consisting of Ebony Gold and Klondike Reef Mines conducted IP and resistivity surveys on the Dawson 9-12 and Ebony 21-22 claims. The Dawson 1-140 and 201-248 claims were transferred to Kennecott Canada Inc in May/93 as part of an option agreement. Kennecott carried out geological mapping on the Dawson claims in 1993 and re-processed helicopter geophysical data previously flown over the claims. In 1994 Kennecott explored airborne magnetic anomalies with ground magnetic surveys, followed by auger soil sampling. In Jan/95 Kennecott dropped its option. In the same month, the Sury claims were transferred to Sultan Minerals Inc. In Jan/96 Arbor Resources changed its name to Klondike Gold Corp.
Capsule Geology
The area is mainly underlain by quartz and feldspar augen-bearing quartz-muscovite schist of the Permian Klondike Schist Assemblage (unit Psa), cut by pyritic porphyry dykes and narrow quartz veins. The augen schist is interpreted to be a felsic metaporphyry, and narrow discontinuous bands of carbonaceous and rusty weathering felsic schist within this unit are thought to represent deformed pendants and screens within the intrusive body.
The 1990 geophysical survey tested IP and resistivity responses in an area of known placer potential.
Soil geochemistry conducted in 1993 by Kennecott Canada Inc showed that the area of the Sury and Dawson claims was anomalous in base and precious metals. Re-processing of previous geophysical data outlined a strong magnetic high in the Sourdough Gulch area. Ground magnetic surveys associated the anomaly with a previously unmapped, magnetite-bearing hornblende-biotite granodiorite intrusion. Prospecting and mapping indicated the presence of pyritic, hornfelsed schists around the intrusion. The hornfels are cut by a diverse suite of mafic and felsic dykes emanating from the intrusion. Rock samples from the hornfels returned weakly anomalous Au values. The best assay was 0.68 g/t Au from a quartz-pyrite stringer.
Kennecott drilled a total of 215 auger holes ( 1 m in depth) over the magnetic anomaly and identified a discontinuous +10 ppb Au anomaly on the southern flank. Three trenches over the soil anomaly produced intermittent quartz-veined quartz muscovite schist. One sample of schist returned a weakly anomalous assay of 85 ppb Au. A fourth trench across the centre of the magnetic anomaly exposed deeply weathered, barren granodiorite.
At the 77 Pup area located 1.5 km north of Sourdough Gulch, Kennecott outlined two small airborne magnetic anomalies. Ground magnetic surveys further delineated the anomalies. Prospecting and mapping
identified several northeasterly striking magnetite-bearing feldspar-hornblende-biotite porphyry dykes in the area. Fifty three auger soil samples collected over the anomaly were barren.
References
ARBOR RESOURCES LTD, STANDARD GOLD MINES LTD and GALLANT GOLD MINES LTD, Nov/87. Assessment Report *#091981 by Z. Dvorak.
DEBICKI, R.L., 1984. Bedrock geology and mineralization of the Klondike area (west), 115 O/14, 15 and 116B 2,3. Exploration and Geological Services Division, DIAND, Open File.
GEORGE CROSS NEWSLETTER, 30 Aug/94; 10 Nov/94; 23 Jan/96.
KENNECOTT CANADA INC, Jun/94. Assessment Report #093209 by R. Cranswick and A. Doyle.
KENNECOTT CANADA INC, Jul/95. Assessment Report #093321 by R. Cranswick, S. de Wit and A. Vary.
KLONDIKE REEF MINES LTD, 1991. Assessment Report #092972 by D.G. Mark.
MORTENSEN, J.K., Geological Compilation Maps of the Northern Stewart River map area Klondike and Sixtymile Districts (115N/15,16; 115O/13,14 and parts of 115O/15,16). Exploration and Geological Services Division, Yukon, Indian and Northern Affairs Canada, Open file 1996-1 (G).
YUKON EXPLORATION 1987, p. 296-299.
YUKON EXPLORATION & GEOLOGY 1994, p. 9, 11, 12.
Location Map
Last Updated: Jul 3, 2018
Work History
| Year | Work Type | Comment |
|---|---|---|
| 1994 | Geochemistry: Soil | |
| 1994 | Ground Geophysics: Magnetics | |
| 1993 | Airborne Geophysics | Reprocessed previous airborne survey data. |
| 1993 | Geology: Bedrock Mapping | |
| 1990 | Ground Geophysics: IP | Also resistivity survey. Work was done on the Dawson 9-12 and the Ebony 21-22 claims. |
| 1986 | Ground Geophysics: Magnetics | Also VLF-EM survey. |
| 1983 | Airborne Geophysics: Electromagnetic | |
| 1983 | Other | |
| 1973 | Geology: Bedrock Mapping | |
| 1973 | Ground Geophysics: Magnetics |
Regional Geology - Terrane
Group: Intermontane
Affinity: W Laurentia
Name: Yukon-Tanana
Realm: peri-Laurentian
Regional Geology - Bedrock
Supergroup:
Group/Suite: Klondike
Formation:
Member:
Terrane: Yukon-Tanana
Period Max: Permian
Age Max: 271 MA
Period Min: Permian
Age Min: 251 MA
Rock Major: quartzite/qt-ms-cl schist/gneiss/amphibolite
Rock Minor:
Reference: Mortensen (1996) - YGS OF 1996-1(G)
Geological Unit (1M): PK
Geological Unit (250K): PK2
Assessment Reports that overlap occurrence
| Report Number | Year | Title | Worktypes | Holes Drilled | Meters Drilled |
|---|---|---|---|---|---|
| 093321 | 1994 | 1994 Annual Report on the Klondike Gold Project | Magnetic - Airborne Geophysics, Rock - Geochemistry, Soil - Geochemistry, Detailed Bedrock Mapping - Geology, Magnetics - Ground Geophysics, Prospecting - Other, Backhoe - Trenching | ||
| 093209 | 1993 | 1993 Prospecting, Rock and Soil Sampling, Geological Mapping and Reprocessing of Helicopter Geophysics on the SURY and DAWSON WEST Properties | Rock - Geochemistry, Soil - Geochemistry, Prospecting - Other, Process/Interpret - Pre-existing Data | ||
| 092690 | 1988 | Geological, Geophysical, Geochemical, and Trench Report for Work Performed by Mark Management Ltd. on the REEF Grid | All Weather Road - Development, Surface, Rock - Geochemistry, Soil - Geochemistry, Bedrock Mapping - Geology, Magnetics - Ground Geophysics, Line Cutting - Other, Mechanical - Trenching | ||
| 091757 | 1987 | Geological, Geochemical and Diamond Drill Report for Work Performed by Mark Management Ltd. on the Dawson Property | Diamond - Drilling, Drill Core - Geochemistry, Rock - Geochemistry, Soil - Geochemistry, Bedrock Mapping - Geology, Prospecting - Other, Mechanical - Trenching | 27 | 3151 |
| 091981 | 1987 | Report on Combined Helicopter Borne Electromagnetic, Magnetic, and VLF-EM Survey | Electromagnetic - Airborne Geophysics, Magnetic - Airborne Geophysics | ||
| 091807 | 1985 | Geological, Geochemical and Geophysical Report for Work performed by Mark Management on the Dawson Property | Rock - Geochemistry, Soil - Geochemistry, Detailed Bedrock Mapping - Geology, EM - Ground Geophysics, Magnetics - Ground Geophysics, Heavy Mineral Concentrate - Lab Work/Physical Studies, Petrographic - Lab Work/Physical Studies, Mechanical - Trenching | ||
| 091616 | 1984 | Geological, Geochemical and Geophysical Report for Work Performed by Mark Management Ltd. on the Dawson Property | Rock - Geochemistry, Silt - Geochemistry, Soil - Geochemistry, Bedrock Mapping - Geology, Heavy Mineral Concentrate - Lab Work/Physical Studies, Mechanical - Trenching | ||
| 091546 | 1983 | Regional Geochemical and Geophysical Report on the Syndicate, Dawson, William, 83, 98, Wild, and Wild Card Claims | Magnetic - Airborne Geophysics, Bedrock Mapping - Geology, EM - Ground Geophysics, Heavy Mineral Concentrate - Lab Work/Physical Studies, Data Compilation - Pre-existing Data | ||
| 060149 | 1972 | Geological and Geochemical Report Yukon Quartz Mineral Claims | Silt - Geochemistry, Soil - Geochemistry |
