Find publications, data and maps managed by the
Yukon Geological Survey

Occurrence Details


Occurrence Number
106D 020
Occurrence Name
Skate
Occurrence Type
Hard-rock
Status
Prospect


General Information

Secondary Commodities: antimony, arsenic, zinc, lead, silver, gold
Aliases: Jay, Len, Lynx
Deposit Type(s): Plutonic Related Au
Location(s): 64.016110 N, -135.63 W
NTS Mapsheet(s): 106D04
Location Comments: 1.5 Kilometres
Hand Samples Available at YGS: Yes

Capsule

Work History

Originally staked as 108 Bob cl (no record) in 1962 by Silver Titan Mines Ltd and held in trust for the Titan Project, which carried out geological mapping and prospecting in 1963.
Restaked as G cl 1-10 (84222) by United Keno Hill Mines Ltd in Jun/65 following the release of results of total heavy mineral content of stream sediment samples collected by the Geological Survey of Canada in 1964 as part of Operation Keno. Prospecting, soil sampling and trenching were carried out in 1965.
Restaked as Jay cl 1-16 (Y31815) in Mar/69 by G. Gutrath and J. Lerner and optioned to Altair Mining Corporation Ltd, which carried out grid soil geochemical sampling and hand trenching later in the year. Reoptioned in Aug/73 to Belmoral Mines Ltd, which carried out geological mapping and geochemical sampling in 1973 and trenching, hand pitting, geochemical sampling and drilling of 6 holes (71.6 m) in 1974. Partially surrounded by the CH cl 1-224 (Y87577) in Mar/74 by United Keno Hill Mining Ltd, which carried out grid soil sampling.
Restaked as Len cl 1-32 (YA30521) in Apr/78 by L. Havranek and G. Dickson and optioned to Gold Cup Resources Ltd and Tally Resources Inc, which carried out geological mapping and geochemical soil and stream sediment sampling in 1980. These claims were fringed to the east and north by CJ cl 1-240 (YA42532) in Sep/80 by Canada Tungsten Mining Corporation.
Except for eight central Len claims and 4 fractional claims which are still owned by Dickson, the area was restaked in Aug/91 within a large block of 370 West claims (#1 = YB18766) by H6000 Holdings Ltd which optioned them to Fairbanks Gold Ltd, a wholly owned subsidiary of Amax Gold Inc. Amax carried out soil geochemical sampling south of Lynx Creek in 1992. H6000 subsequently changed its name to Ivanhoe Goldfields Ltd.
In Aug/94 Ivanhoe contracted Aurum Geological Consultants Ltd to carry out reconnaissance mapping, prospecting, soil, silt and rock sampling on the West claims. During the same period Aurum hand dug six trenches on Dickson's Len claims.
In May/96 Janet Dickson (G. Dickson's widow) optioned the Len claims to Balaclava Industries Ltd which carried out excavator trenching, soil sampling, magnetometer and electromagnetic geophysical surveying and staked 4 fractional Jan claims (1=YB65585) in Jul/96 contiguously to the south of the Len claims. In Sep/96 Balaclava optioned a 50% interest in the claim group to Panamex Resources Inc. Balaclava Industries Ltd changed its name to Balaclava Mines Inc in Nov/96. In Jun/97 Panamex drilled 6 holes (500 m) to test the grade and extent of quartz-sulphide vein mineralization discovered the previous year. Panamax dropped its option in 1999.
In May/2001 J. Dickson staked 24 additional, non-consequtively number Len claims (1 = YC02730) to surround her existing holdings in the area. Later that year she carried out geochemical sampling of previously unsampled core intervals from Panamex's 1997 drill program and reconnaissance soil sampling outside of the previously sampled area.
In 2002, Expatriate Resources Ltd optioned the Len and Jan claims and staked Lynx cl 1-56 (YC10463) in Jun/2002 to surround them. Expatriate then carried out prospecting, relogging of the 1997 drill core and stream, soil and rock geochemical sampling before selling its interest in property (renamed as Lynx) to StrataGold Corporation as part of a special warrant transaction. In 2003 StrataGold carried out a small program of geological mapping, geochemical sampling and magnetic and IP geophysical surveying.

Capsule Geology

The Skate lead-zinc-silver (Pb-Zn-Ag) vein consists of galena, sphalerite, pyrite and jamesonite that occur with quartz in a siderite vein (or concordant sheet like body). The vein is hosted in schist near a contact with limestone of Late Proterozoic Yusezyu Formation of the Hyland Group on the north limb of the east-trending McQuesten antiform. The vein strikes northwest, dips about 30 degrees to the south, has been traced for a length of 61 m with an apparent width of 10.7 m on surface and a true width of 2.7 m. Narrow stringer and veinlets of galena are concentrated along the hanging wall and footwall contacts.
Chip samples from two trenches assayed 260.6 g/t silver, 1.9% lead, 3.7% zinc and 13.7 g/t gold across 1.2 m, and 233.1 g/t silver, 3.7% lead, 3.1% zinc and 1.0 g/t gold across 1.2 m. Six character samples collected in 1973 averaged 205.7 g/t silver, 4.2% lead, 4.2% zinc and 04 g/t gold. The best drill intersection was 75.1 g/t silver from 9.1 to 10.1 m in Hole 7, but evaluation was hampered by very poor core recovery.
The 1980 surveys on the Len Group outlined a previously unmapped stock and a silver-lead anomaly northeast of the showing. The stock measures approximately 400 by 700 m and consists of equigranular, locally megacrystic, granodiorite. The granodiorite contains up to 3% disseminated arsenopyrite and rare pyrite and most likely belongs to the 91-94 Ma Tombstone intrusive suite. Moderate hornfelsing of the host metasedimentary rocks is expressed by biotite and sulfide alteration of the quartzite and varying degrees of sericitization, silicification and limonite staining.
Amax's 1992 survey covered a north-facing slope with very little exposed bedrock, and outlined several weak to moderate gold anomalies.
Aurum's work focused on evaluating the potential of the Cretaceous stocks, to host "Fort Knox" style mineralization. A total of 44 soil, 14 rock and one silt sample were collected and analyzed for gold, silver, arsenic, bismuth, copper, mercury, molybdenum, lead, antimony and zinc. A sample of medium grained, equigranular granitic float containing rare quartz and trace fine grained sulphides along fracture surfaces returned 40 ppb gold and 684 ppm arsenic. The soil samples returned 5 individual anomalous gold values ranging from 5 to 40 ppb gold. Results for arsenic (As) and bismuth (Bi), both indicator minerals for "Fort Knox" mineralization were generally low.
The six trenches were dug on the Len claims within the granodiorite intrusion near the projected location of the Robert Service Thrust Fault (which was apparently exposed in two of the trenches) and the probable intrusive contact with lithologies that subsequent operators of the project have mapped as Carboniferous aged Keno Hill quartzite (?) based on their massive nature. The majority of rock samples collected consisted of variably altered granodiorite which often contained fine grained sulphides (arsenopyrite >> pyrite > chalcopyrite). A sample from Trench #2 consisting of limonitic quartz vein material with abundant visible fine grained sulphides concentrated in hair-like veinlets and fracture fillings returned 780 ppb gold, >10,000 ppm arsenic and 16 ppm bismuth.
Soil sampling completed by Balaclava outlined a gold and arsenic anomaly over and proximal to the granitic intrusion. The anomaly also returned elevated levels of silver, bismuth, antimony and cadmium. The total field magnetic survey outlined several high amplitude magnetic anomalies within the intrusion which closely correspond to the location of gold mineralization exposed in earlier trenches. The electromagnetic survey was inconclusive.
Balaclava dug 8 trenches (1 381 m2) along the southern boundary of the intrusion to test the geochemical and geophysical anomalies. The trenches exposed multiple, structurally controlled, steeply dipping, east-west trending sheeted sericite-clay-quartz-sulphide-carbonate zones approximately paralleling the south margin of the intrusive. Sulfides are dominated by arsenopyrite, with lesser amounts of pyrite, stibnite and galena as massive stringers and disseminations within clay-rich zones and along quartz vein selvages. Individual mineralized zones range up to 10 m wide and are separated by parallel zones of altered granodiorite. Mineralized zones are frequently gossanous weathering resulting from limonitic and hematitic alteration and local ferricrete development of former pyrite. The zone of mineralization measures approximately 250 m wide by 540 m long. Chip sampling of the mineralized zones returned up to 22.5 g/t gold across 3 m, with individual samples ranging up to 50 g/t gold. All samples returned elevated concentrations of silver, lead, arsenic, cadmium, tungsten, bismuth and antimony.
A 1996 claim post survey showed that the original siderite vein lies immediately southwest of the surviving Len and fractional claims.
The six drill holes were drilled at 100 m spacings in order to test the quartz-sulphide vein mineralization encountered in the 1996 trenching program. All of the holes were successful in intersecting gold mineralization of at least 4 g/t gold across widths of 0.5 m or more. Assay results of individual veins intersected in the holes have returned up to 28.5 g/t gold across a core width of 0.73 m (Hole 97-02). Weighted averages across multiple veins returned up to 2.22 g/t gold across 18.59 m and 0.65 g/t gold across 48.77 m (Holes 97-01 and 97-03 respectively, core widths). High gold values were associated with arsenopyrite and locally pyrite, galena, sphalerite, stibnite and bismuthinite.
During the 1997 drill program Hole 97-06 intersected quartzite, phyllitic quartzite and schist adjacent to the trenched exposures of granodiorite. Sampling, carried out in 2001, of previously untested intervals of core from this hole and combined with the earlier 1997 results returned a weighted average value of 1.4 g/t gold over 22.2 m (including 2.8 g/t gold over 7.8 m near the bottom of the hole). Reconnaissance soil sampling also carried out at this time involved the collection of 38 soil samples peripheral to the known mineralized zone and returned variably anomalous results for gold, arsenic and antimony from six consecutive samples (150 m spacing) along the western boundary of the Len claims. Peak values of 52 ppb gold, 1 741 ppm arsenic and 34 ppm antimony were returned.
Expatriate identified additional mineralization during sampling of the remaining core from Hole 97-06 and the bedrock interval in the hole now averages 0.79 g/t gold over 59.1 m, including an interval at the top of the hole averaging 0.54 g/t gold over 24.1 m and a 27.1 m interval at the bottom of the hole which averages 1.23 g/t gold. Silt and soil geochemical sampling also carried out during the 2002 served to confirm the strength and character of the anomalies previously identified on the property.
Geophysical surveying of the property has shown that the magnetic susceptibility of the underlying metasedimentary rocks has very little variation. The Skate Vein appears as a strong negative relief on sections where the structure is the widest. IP surveying carried out over the veined area of the granodiorite and centered on the trenched area showed strong chargeability and low resistivity, while increased complexity of the chargeability and resistivity psuedosection profiles further to the north of the drill area are suggestive of considerable variation in bedrock lithology and structure and the presence of considerable sulphide or other conductive material.

References

ALTAIR MINING CORPORATION LTD, Feb/70. Assessment Report #060184 by E.D. Dodson.

AGILIS EXPLORATION SERVICES LTD, Apr/81. Assessment Report #090813 by R.H.D. Philip.

AMAX GOLD (B.C.) LTD, Dec/92. Assessment Report #093061 by C.N. Orssich.

BALACLAVA INDUSTRIES LTD, News Release, 12 Jun/96.

BELMORAL MINES LTD, Nov/73. Assessment Report #061137 by F. Holcapek.

BELMORAL MINES LTD, Jun/74. Assessment Report #061496 by H.J. Toohey.

BELMORAL MINES LTD, Apr/75. Assessment Report #061495 by J.R. Deighton.

DICKSON, J., Nov/94. Assessment Report #093253 by R.A. Doherty and J.A. vanRanden.

DICKSON, J., May/2002. Assessment Report #094362 by H.J. Keyser.

GEOLOGICAL SURVEY OF CANADA Paper 66-31, p. 16-17.

GEORGE CROSS NEWSLETTER, 13 Jun/96, 9 Jul/96, 21 Oct/96, 2 Jul/97, 9 Jul/97.

GOLD CUP RESOURCES LTD and TALLY RESOURCES INC, Jun/79. Prospectus Report #061872 and #061874 by D.R. Morgan.

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).

HUNT, J.A., MURPHY, D.C., ROOTS, C.F. and POOLE, W.H., 1996. Geological map of the Mt. Haldane area, Yukon (105M/13). Exploration and Geological Services Division, Yukon, Indian and Northern Affairs Canada, Map 1996-4, scale 1:50 000.

IVANHOE GOLDFIELDS LTD, Jan/95. Assessment Report #093236 by R.A. Doherty and J.A. vanRanden.

MINERAL INDUSTRY REPORT 1969 and 1970, p. 15-16; 1973, p. 13 .

MORIN, J.A., 1989. Yukon Gold-Silver File. Exploration and Geological Services Division, Yukon, Indian and Northern Affairs Canada, Open File 1989-3.

MURPHY, D.C., 1997. Geology of the McQuesten River Region, Northern McQuesten and Mayo Map Areas, Yukon Terrritory (115P/14, 15, 16: 105M/13, 14). Exploration and Geological Services Division, Yukon, Indian and Northern Affairs Canada, Bulletin 6, 122 p.

PANAMEX RESOURCES INC, News Release, 30 Aug/96, 16 Oct/96.

PANAMEX RESOURCES INC, Oct/96. Assessment Report #093519 by H.J. Keyser.

PANAMEX RESOURCES INC, Dec/97. Assessment Report #093769 by H.J. Keyser.

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.

SILVER TITAN MINES LTD, Jan/64. Assessment Report #017463 by A.E. Aho and D. Tempelman-Kluitt.

STRATAGOLD CORPORATION, Dec/2003. Assessment Report #094436 by J. Moore.

STRATAGOLD CORPORATION, Feb/2004. Website: www.stratagold.com.

UNITED KENO HILL MINES LTD, May/70. Assessment Report #060724 by R.E. Van Tassel.

UNITED KENO HILL MINES LTD, 1974. Assessment Report *#061274 by T.R. Scott.

UNITED KENO HILL MINES LTD, 1975. Assessment Report *#090047 by T.R. Scott.

YUKON EXPLORATION AND GEOLOGY 1981, p. 194; 1992, p. 2, 4, 5. 1996, p. 30. 1997, p. 28, 36; 2002, p.24; 2003, p. 10.

Location Map

Last Updated: Aug 24, 2018

Work History

Year Work Type Comment
2003 Geochemistry: Soil Also rock sampling.
2003 Geology: Bedrock Mapping
2003 Ground Geophysics: Magnetics Also I.P. survey.
2002 Geochemistry: Historical Drill Core Included relogging and additional sampling of core from Hole 97-06, as well as reconnaissance silt and soil sampling.
2002 Other: Prospecting
2001 Geochemistry: Historical Drill Core Sampling of previously unsampled intervals of 1997 drill core and reconnaissance soil sampling peripheral to known anomalies.
1997 Drilling: Diamond Six holes, 500 m.
1996 Geochemistry: Soil
1996 Ground Geophysics: EM Also magnetic survey.
1996 Trenching: Mechanical
1994 Geochemistry: Rock
1994 Geochemistry: Silt
1994 Geochemistry: Soil
1994 Geology: Bedrock Mapping
1994 Other: Prospecting
1992 Geochemistry: Soil Work carried out by Fairbanks Gold Ltd for Ivanhoe Goldfields.
1980 Geochemistry: Silt
1980 Geochemistry: Soil
1980 Geology: Bedrock Mapping
1974 Drilling: Diamond Six holes, 71.6 m.
1974 Geochemistry: Soil
1974 Trenching: Hand
1973 Geochemistry: Soil
1973 Geology: Bedrock Mapping
1969 Geochemistry: Soil
1969 Trenching: Hand
1965 Geochemistry: Soil
1965 Other: Prospecting
1965 Trenching
1963 Geology: Bedrock Mapping
1963 Other: Prospecting

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
095592 2006 2006 Dublin Gulch Exploration Program Diamond - Drilling, Drill Core - Geochemistry, Rock - Geochemistry, Soil - Geochemistry, Hand - Trenching 10 4281.51
094788 2004 2004 [Dublin Gulch] Geophysical Survey Electromagnetic - Airborne Geophysics, Magnetic - Airborne Geophysics
094765 2003 2003 Lync Claims Assessment Report IP - Ground Geophysics, Resistivity - Ground Geophysics
094436 2002 Geological, Geochemical and Prospecting Report on the Lynx Property Silt - Geochemistry, Soil - Geochemistry, Prospecting - Other
094362 2001 Report on the 2001 Assessment Work on the Len Property Drill Core - Geochemistry, Soil - Geochemistry, Prospecting - Other
093987 1998 Digital Topography, Landsat, and Colour Air Photo Survey over the Clark Claims] Orthophoto - Airphotography, Rock - Geochemistry, Landsat - Remote Sensing
093519 1996 Report on the 1996 Exploration Work on the Len Property Rock - Geochemistry, Soil - Geochemistry, EM - Ground Geophysics, Magnetics - Ground Geophysics, Line Cutting - Other, Backhoe - Trenching
093236 1994 1994 Assessment Report on the West Claims Rock - Geochemistry, Silt - Geochemistry, Soil - Geochemistry, Bedrock Mapping - Geology, Prospecting - Other
093061 1992 1992 Dublin Gulch Geochemical Assessment Report Soil - Geochemistry, Prospecting - Other
093253 1984 1994 Assessment Report on the Len Property Rock - Geochemistry, Hand - Trenching
090915 1981 1981 Exploration Program, Dublin Gulch Rock - Geochemistry, Silt - Geochemistry, Soil - Geochemistry, Bedrock Mapping - Geology, Prospecting - Other, Mechanical - Trenching
090813 1980 A Geological Report on the Len 1-32 Claims Silt - Geochemistry, Soil - Geochemistry, Bedrock Mapping - Geology
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
061872 1979 A Geological Report on the Len 1-32 Claims Property Evaluation - Other, Research/Summarize - Pre-existing Data
091275 1976 [Overburden Drill Hole Logs on the CH Claims] Reverse Circulation - Drilling, Drill Cuttings - Geochemistry 49 2193.34
090047 1975 Geological and Geochemical Report on the CH 1 to 224 and Reuben 1 to 6 Mineral Claims Rock - Geochemistry, Soil - Geochemistry, Bedrock Mapping - Geology
061274 1974 Geological and Geochemical Report on the CH 1 to 224 Mineral Claims Inclusive Soil - Geochemistry, Bedrock Mapping - Geology, Mechanical - Trenching
061496 1974 Addendum Report, Proposed Exploration Program, Jay Mineral Claims Research/Summarize - Pre-existing Data
061137 1973 Geological Report on the Jay Mineral Claims Bedrock Mapping - Geology, Prospecting - Other, Process/Interpret - Pre-existing Data
060724 1969 Geological and Geochemical Report on the Erin 1 to 28 and 31 to 189 Mineral Claims Rock - Geochemistry, Soil - Geochemistry, Bedrock Mapping - Geology, Prospecting - Other
060184 1969 Report on a Geochemical Survey on the Jay 1-16 Mineral Claims Soil - Geochemistry, Prospecting - Other
017463 1963 Report on the Geology of the Bob Group, Mineral Claims Interpretation - Airphotography, Bedrock Mapping - Geology, Cursory Property Visit - Other
092064 1963 The Silver Titan Story Research/Summarize - Pre-existing Data

Submit Information to Yukon Geological Survey

Name:

E-mail:

Comment: