General Information
Secondary Commodities: gold
Deposit Type(s): Porphyry Sn
Location(s): 64.047780 N, -138.948890 W
NTS Mapsheet(s): 116B02
Location Comments: .5 Kilometres
Hand Samples Available at YGS: Yes
Capsule
Work History
Staked as White Rock cl (11620) in Dec/09. Restaked as Rosebush cl (78057) in Jul/56 by A. Sansoucy; as Tin and Tina cl (Yl5993) in May/69 by F. Roberts; and as Surprize cl 1-219 (YA9565) in Oct/76 and 1977 by Archer Cathro and Associates Ltd for the Ukon Joint Venture (Chevron Canada Ltd & Kerr Addison Mines Ltd), which carried out soil geochemical and radiometric surveying in 1976 and 1977. In 1978, Ukon Joint Venture (UJV) carried out soil sampling, geological mapping, radiometric surveying, bulldozer trenching and drilled 9 holes (411 m). UJV carried out radon gas surveying on the western portion of the claim block and geological mapping, soil panning and radiometric surveying on the northwestern side of the block in 1979.
L. Rambaraw staked the Lindsay cl 1 (YA10105) 1.5 miles south in May/77, possibly in connection with nearby placer work. S. Wooten and associates restaked the fringe claims to the south as Pup, etc cl (YA31824) in Sep/78 and added more claims in 1979 and 1980.
Restaked as Acrete cl 1-14 (YA84082) in Jun/84 by Nordac Mining Corp, which carried out trenching, geological mapping and sampling in 1985. Restaked again as Germ cl 1-24 (YB23373) in Nov/88 by G. Carlson (50%) and Golden Rum Resources Ltd (50%). Noranda staked Rabt cl 1-8 (YB23365) to the west in Dec/88 and staked Rabt cl 9-35 (YB23427) in May/89. Noranda optioned the Germ claims in Jun/89 and carried out geological mapping and geochemical (rock and soil) sampling that year. The Germ claims reverted back to Golden Rum (50%) and G. Carlson (50%) in Feb/90.
Restaked as Brik cl 1-28 (YB67979) by Balaclava Mines Inc in Mar/96, which carried out geological mapping and limited geochemical (rock and soil) sampling later that year. In Sep/97 the claims were optioned to Radius Explorations Ltd which staked Brik cl 29-66 (YC04766) later that month and carried out geological mapping, prospecting, geochemical (rock, soil and heavy mineral) sampling, magnetic and IP geophysical surveying and excavator trenching. In 1998, Radius carried out diamond drilling of seven holes (375 m) before dropping the option.
Capsule Geology
Chalcedony veins up to 10 cm wide and zones of chalcedonic breccia are associated with a clay-altered quartz-feldspar porphyry stock of Eocene age. The veins and breccia zones cut felsic lapilli tuff, volcanic breccia and underlying pebble and cobble conglomerate and altered serpentinite between the mouths of Germaine and Goring Creeks. Wall rocks and breccia fragments are intensely kaolinized and silicified. The veins and alteration zones, which consist of quartz, sericite, ankerite, magnetite and pyrophyllite, are variably anomalous in As, Hg, Sb and Tl, but rarely anomalous in precious metals.
Abundant cassiterite found in placer gravels suggests a fumarolic source for the tin, which probably formed as colloform aggregates in vugs and vesicles in rhyolite porphyry. Fluorite and topaz are common accessory minerals in the porphyry. Highly kaolinized porphyry assayed up to 100 ppm Sn compared with only 7 ppm in unaltered porphyry.
Exploration in the 1970's was directed towards uranium potential within the stock, following the discovery of anomalous uranium contents in water of the creeks draining the area.
Mapping in 1989 outlined a 800 x 700 m quartz-carbonate altered ultramafic body on the northeast part of the property. Rock samples from this unit contained up to 1 336 ppm Ni and 80 ppb Au. The samples with anomalous gold were concentrated along an intensely altered northeast-trending zone which may be a fault.
Work in 1996 focused on the gold potential of the area and Balaclava identified a zone of epithermal style alteration coincident with a vegetative kill zone along the margin of a distinctive aeromagnetic low near the ultramafic body. Geochemical sampling confirmed previous exploration results and returned peak values of 272 ppb Au, 548 ppm As, 6 ppm Bi, 13 ppm Sb and 3 ppm Hg from soil samples, although values for gold from rock sampling were generally low (less than 20 ppb).
Results of the 1997 program identified magnetic anomalies and an IP chargeability-resistivity anomaly that is closely coincident with an Au-As-Sb soil anomaly in an area underlain by the ultramafic body near the margin of the Tintina Fault Zone. Extensive and frozen overburden hampered exploration and data interpretation. Diamond drilling completed in 1998 showed, that gold mineralization was low grade and restricted to the ultramafic rocks, that the ultramafic rocks are bounded by subhorizontal thrust faults and that the thrust fault is underlain by schist containing abundant graphite that explains chargeability anomalies detected in the area.
References
BALACLAVA MINES INC, Sep/97. Assessment Report #093751 by H.J. Keyser.
GEOLOGICAL SURVEY OF CANADA, Economic Geology Report NO. 28, p. 70.
GEOLOGICAL SURVEY OF CANADA, Paper 65-19, p. 64-65.
MINERAL INDUSTRY REPORT 1978, P. 28-29.
MORTENSEN, J.K., and RUSHTON, R., 1992. Preliminary observations on the geology and geochemistry of quartz veins in the Klondike District, West-Central Yukon. In: Yukon Geology Vol. 3, Exploration and Geological Services Division, DIAND, p. 260-270.
NORANDA EXPLORATION COMPANY LTD, Dec/89. Assessment Report #092790 by R. Diment.
NORDAC MINING CORP, Jul/85. Assessment Report #091632 by R.J. Cathro.
RADIUS EXPLORATIONS LTD, May/98. Assessment Report #093830 by H.J. Keyser.
RADIUS EXPLORATIONS LTD, Nov/98. Assessment Report #093924 by H.J. Keyser.
UKON JOINT VENTURE, 1976. Assessment Report *#090188 by A.R. Archer and E.P. Onasick.
UKON JOINT VENTURE, 1977. Assessment Report *#090274 by A.R. Archer.
UKON JOINT VENTURE, Mar/79. Assessment Report #090448 by A.R. Archer.
UKON JOINT VENTURE, Feb/80. Assessment Report #090556 by A.R. Archer.
YUKON EXPLORATION 1985-86, p. 391-392; 1988, p. 235, 239-240; 1989, p. 141.
Staked as White Rock cl (11620) in Dec/09. Restaked as Rosebush cl (78057) in Jul/56 by A. Sansoucy; as Tin and Tina cl (Yl5993) in May/69 by F. Roberts; and as Surprize cl 1-219 (YA9565) in Oct/76 and 1977 by Archer Cathro and Associates Ltd for the Ukon Joint Venture (Chevron Canada Ltd & Kerr Addison Mines Ltd), which carried out soil geochemical and radiometric surveying in 1976 and 1977. In 1978, Ukon Joint Venture (UJV) carried out soil sampling, geological mapping, radiometric surveying, bulldozer trenching and drilled 9 holes (411 m). UJV carried out radon gas surveying on the western portion of the claim block and geological mapping, soil panning and radiometric surveying on the northwestern side of the block in 1979.
L. Rambaraw staked the Lindsay cl 1 (YA10105) 1.5 miles south in May/77, possibly in connection with nearby placer work. S. Wooten and associates restaked the fringe claims to the south as Pup, etc cl (YA31824) in Sep/78 and added more claims in 1979 and 1980.
Restaked as Acrete cl 1-14 (YA84082) in Jun/84 by Nordac Mining Corp, which carried out trenching, geological mapping and sampling in 1985. Restaked again as Germ cl 1-24 (YB23373) in Nov/88 by G. Carlson (50%) and Golden Rum Resources Ltd (50%). Noranda staked Rabt cl 1-8 (YB23365) to the west in Dec/88 and staked Rabt cl 9-35 (YB23427) in May/89. Noranda optioned the Germ claims in Jun/89 and carried out geological mapping and geochemical (rock and soil) sampling that year. The Germ claims reverted back to Golden Rum (50%) and G. Carlson (50%) in Feb/90.
Restaked as Brik cl 1-28 (YB67979) by Balaclava Mines Inc in Mar/96, which carried out geological mapping and limited geochemical (rock and soil) sampling later that year. In Sep/97 the claims were optioned to Radius Explorations Ltd which staked Brik cl 29-66 (YC04766) later that month and carried out geological mapping, prospecting, geochemical (rock, soil and heavy mineral) sampling, magnetic and IP geophysical surveying and excavator trenching. In 1998, Radius carried out diamond drilling of seven holes (375 m) before dropping the option.
Capsule Geology
Chalcedony veins up to 10 cm wide and zones of chalcedonic breccia are associated with a clay-altered quartz-feldspar porphyry stock of Eocene age. The veins and breccia zones cut felsic lapilli tuff, volcanic breccia and underlying pebble and cobble conglomerate and altered serpentinite between the mouths of Germaine and Goring Creeks. Wall rocks and breccia fragments are intensely kaolinized and silicified. The veins and alteration zones, which consist of quartz, sericite, ankerite, magnetite and pyrophyllite, are variably anomalous in As, Hg, Sb and Tl, but rarely anomalous in precious metals.
Abundant cassiterite found in placer gravels suggests a fumarolic source for the tin, which probably formed as colloform aggregates in vugs and vesicles in rhyolite porphyry. Fluorite and topaz are common accessory minerals in the porphyry. Highly kaolinized porphyry assayed up to 100 ppm Sn compared with only 7 ppm in unaltered porphyry.
Exploration in the 1970's was directed towards uranium potential within the stock, following the discovery of anomalous uranium contents in water of the creeks draining the area.
Mapping in 1989 outlined a 800 x 700 m quartz-carbonate altered ultramafic body on the northeast part of the property. Rock samples from this unit contained up to 1 336 ppm Ni and 80 ppb Au. The samples with anomalous gold were concentrated along an intensely altered northeast-trending zone which may be a fault.
Work in 1996 focused on the gold potential of the area and Balaclava identified a zone of epithermal style alteration coincident with a vegetative kill zone along the margin of a distinctive aeromagnetic low near the ultramafic body. Geochemical sampling confirmed previous exploration results and returned peak values of 272 ppb Au, 548 ppm As, 6 ppm Bi, 13 ppm Sb and 3 ppm Hg from soil samples, although values for gold from rock sampling were generally low (less than 20 ppb).
Results of the 1997 program identified magnetic anomalies and an IP chargeability-resistivity anomaly that is closely coincident with an Au-As-Sb soil anomaly in an area underlain by the ultramafic body near the margin of the Tintina Fault Zone. Extensive and frozen overburden hampered exploration and data interpretation. Diamond drilling completed in 1998 showed, that gold mineralization was low grade and restricted to the ultramafic rocks, that the ultramafic rocks are bounded by subhorizontal thrust faults and that the thrust fault is underlain by schist containing abundant graphite that explains chargeability anomalies detected in the area.
References
BALACLAVA MINES INC, Sep/97. Assessment Report #093751 by H.J. Keyser.
GEOLOGICAL SURVEY OF CANADA, Economic Geology Report NO. 28, p. 70.
GEOLOGICAL SURVEY OF CANADA, Paper 65-19, p. 64-65.
MINERAL INDUSTRY REPORT 1978, P. 28-29.
MORTENSEN, J.K., and RUSHTON, R., 1992. Preliminary observations on the geology and geochemistry of quartz veins in the Klondike District, West-Central Yukon. In: Yukon Geology Vol. 3, Exploration and Geological Services Division, DIAND, p. 260-270.
NORANDA EXPLORATION COMPANY LTD, Dec/89. Assessment Report #092790 by R. Diment.
NORDAC MINING CORP, Jul/85. Assessment Report #091632 by R.J. Cathro.
RADIUS EXPLORATIONS LTD, May/98. Assessment Report #093830 by H.J. Keyser.
RADIUS EXPLORATIONS LTD, Nov/98. Assessment Report #093924 by H.J. Keyser.
UKON JOINT VENTURE, 1976. Assessment Report *#090188 by A.R. Archer and E.P. Onasick.
UKON JOINT VENTURE, 1977. Assessment Report *#090274 by A.R. Archer.
UKON JOINT VENTURE, Mar/79. Assessment Report #090448 by A.R. Archer.
UKON JOINT VENTURE, Feb/80. Assessment Report #090556 by A.R. Archer.
YUKON EXPLORATION 1985-86, p. 391-392; 1988, p. 235, 239-240; 1989, p. 141.
Location Map
Last Updated: Sep 14, 2018
Work History
| Year | Work Type | Comment |
|---|---|---|
| 1998 | Drilling: Diamond | Seven holes, 375 m. |
| 1997 | Geochemistry: Rock | Also soil and heavy mineral sampling. |
| 1997 | Geology: Bedrock Mapping | |
| 1997 | Ground Geophysics: Magnetics | Also IP survey. |
| 1997 | Other: Prospecting | |
| 1997 | Trenching: Mechanical | |
| 1996 | Geochemistry: Rock | Also soil sampling. |
| 1996 | Geology: Bedrock Mapping | |
| 1989 | Geochemistry: Rock | |
| 1989 | Geochemistry: Soil | |
| 1989 | Geology: Bedrock Mapping | |
| 1985 | Geochemistry: Soil | |
| 1985 | Geology: Bedrock Mapping | |
| 1985 | Trenching: Hand | |
| 1979 | Geochemistry: Soil | Panned samples. |
| 1979 | Geology: Bedrock Mapping | |
| 1979 | Ground Geophysics | Radon gas sampling. |
| 1978 | Geochemistry: Silt | |
| 1978 | Geology: Bedrock Mapping | |
| 1978 | Drilling: Diamond | Nine holes, 411 m. |
| 1978 | Geochemistry: Soil | |
| 1978 | Ground Geophysics: Radiometric Survey | |
| 1978 | Trenching: Mechanical | |
| 1977 | Geochemistry: Soil | |
| 1977 | Geology: Bedrock Mapping | |
| 1977 | Ground Geophysics: Radiometric Survey | |
| 1977 | Trenching: Hand | |
| 1977 | Trenching: Mechanical | |
| 1976 | Geochemistry: Soil | Also silt sampling. |
| 1976 | Geology: Bedrock Mapping | |
| 1976 | Ground Geophysics: Radiometric Survey |
Regional Geology - Terrane
Group: Intermontane
Affinity: W Laurentia
Name: Yukon-Tanana
Realm: peri-Laurentian
Regional Geology - Bedrock
Supergroup:
Group/Suite: Finlayson
Formation:
Member:
Terrane: Yukon-Tanana
Period Max: Devonian
Age Max: 365 MA
Period Min: Carboniferous
Age Min: 345 MA
Rock Major: quartzite/gr-quartzite/qt-ms-cl-schist
Rock Minor: conglo/grit
Reference: Mortensen - unpublished compilation
Geological Unit (1M): DMF
Geological Unit (250K): DMF3
Assessment Reports that overlap occurrence
| Report Number | Year | Title | Worktypes | Holes Drilled | Meters Drilled |
|---|---|---|---|---|---|
| 093751 | 1996 | Report on the 1996 Geological and Geochemical Assessment Work on the BRIK Property | Rock - Geochemistry, Soil - Geochemistry, Detailed Bedrock Mapping - Geology, Prospecting - Other, Data Compilation - Pre-existing Data | ||
| 090556 | 1979 | Radiometric Geochemical and Radon Soil Gas Survey on the SURPRIZE 1-225 Claims | Rock - Geochemistry, Soil - Geochemistry, Bedrock Mapping - Geology, Gamma-ray Spectrometry - Ground Geophysics, Heavy Mineral Concentrate - Lab Work/Physical Studies, Line Cutting - Other, Prospecting - Other | ||
| 090448 | 1978 | Assessment Report Surprise Claims | Auger - Drilling, Drill Core - Geochemistry, Drill Cuttings - Geochemistry, Soil - Geochemistry, Mechanical - Trenching | 9 | 415.40 |
Related References
| Number | Title | Page(s) | Document Type |
|---|---|---|---|
| ARMC016773 | Geology map - 116B/2 - Rabbit Creek | Geoscience Map (Geological - Bedrock) |
| Citations |
|---|
