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

Occurrence Details


Occurrence Number
105G 051
Occurrence Name
Chow
Occurrence Type
Hard-rock
Status
Prospect


General Information

Secondary Commodities: copper, zinc, lead, gold
Aliases: Play
Deposit Type(s): Volcanogenic Sulphide - type not determined
Location(s): 61.841110 N, -131.490830 W
NTS Mapsheet(s): 105G14
Location Comments: .5 Kilometres
Hand Samples Available at YGS: No

Capsule

Work History

Staked as Kay cl 1-6 (Y16398) in Sep/66 by Kerr Addison Mines Ltd following regional geochemical surveys. Restaked as Palo cl 1-40 (Y73482) in Jun/73 by A. Harmon and as Gay cl (Y83797) in Oct/74 by A. Carlos.
Restaked as Gem cl 1-17 (YA156) in Jul/76 by A. Carlos and optioned to Yukon Revenue Mines Ltd which added BB cl 1-68 (YA889), Water cl 1-20 (YA11763), Lake cl 1-17 (YA11283) and Jade cl 1-12 (YA11800) in Sep/76-Jan/77 and performed mapping and soil sampling in 1976 and 1977 and drilled four holes totaling 400 m in 1977. The property was transferred in Dec/80 to Harjay Exploration Ltd.
Fringe staking between Nov/76 and Oct/77 included Polo cl (YA11972) by Welcome North Mines Ltd and Jim cl (YA12042) by P.S. White to the southwest; Iskut cl (YA12834) by Iskut Silver Mines Ltd to the northwest; Wit cl (YA12026) by E. Wedekind to the south; and My cl 1-4 (YA12212) by Marge Enterprises Ltd.
In June/94 Cominco Ltd staked Fret cl 1-51 (YB50023) north of the occurrence and carried out ground geophysics, soil sampling and geological mapping later in the summer. In Jul/97 Cominco optioned the Fret claims to Pacific Bay Minerals Ltd which carried out geological mapping and grid soil sampling later in the year. Pacific Bay dropped the option the following year.
Restaked within Play cl 1-64 (YB59231) in Mar/95 by Expatriate Resources Ltd. The claim group was staked in a northwest direction, with the northeast corner of the claim block adjoining the southwest corner of the Fret claims. In Aug/95 Expatriate staked Play cl 77-88 (YB60923) on the western end of their original claim block. In 1995 Expatriate carried out preliminary soil sampling, prospecting and geological mapping.
Expatriate staked Play cl 89-139 (YB76998) in Feb/96 and contracted Aerodata Inc to fly a helicopter-borne EM/magnetic geophysical survey over the Play and adjoining Ref claims (Minfile Occurrence #105G 099, combined claim groups were called Power Play property).
In Jun/96 the company staked Play cl 148-176 (YB89386) to cover open ground between the Play claims and Cominco¿s Fret claims. During the 1996 field season Expatriate carried out soil sampling, prospecting, geological mapping, ground HLEM and total field magnetic surveys over selected portions of the Play claims. In 1997 the company carried out additional geological mapping, prospecting and soil sampling programs, hand trenched various showings and drilled 6 diamond drill holes (662 m).
In 2002 Expatriate re-evaluated data obtained from the airborne geophysical program flown in 1996 and carried out geological mapping, rock sampling and soil sampling programs in order to fill in data gaps and verify results obtained in previous exploration programs.
In Dec/2004 shareholders of Expatriate approved a re-organization plan whereby all of Expatriate¿s non- Finlayson District exploration properties were transferred to a new company, Pacific Resources Ltd. Upon completion of the re-organization Expatriate changed its name to Yukon Zinc Corporation. Yukon Zinc¿s focus will be the development of company¿s Wolverine Deposit (Minfile Occurrence #105G 072) and its large surrounding claim holdings including the Play claims (this occurrence).

Capsule Geology

The area surrounding the occurrence is covered by deep deposits of overburden. Scattered outcrops can be found on ridge tops and some deeply incised drainages. Murphy et al. (2001) of the Yukon Geological Survey have completed preliminary mapping in the area, however changes are expected in future updates as more detailed mapping is completed.
Based on geological work by Cominco, Expatriate and the Yukon Geological Survey, the occurrence area is underlain by undifferentiated layered rocks which Murphy called unit CMCu. Murphy described the unit as Upper Devonian to Pennsylvanian in age, and consisting of undifferentiated layered rocks lying in the hanging wall of Money Creek Thrust. The unit contains some unit Pcl rocks (Pennsylvanian in age), and includes intermediate to felsic metavolcanic rocks, carbonate, and dark chert, greywacke and phyllite. This unit is unconformably overlain to the north by Late Pennsylvanian clastic rocks and Early Permian Campbell Range basalt.
Geological work reported by Cominco and Expatriate notes that the Campbell Range succession consists of massive basalt overlying a sequence of variably composed cherts, some possibly exhalative in origin, mixed with minor clastic sedimentary rocks and narrow basaltic horizons. The contact between the Campbell Range succession and the underlying layered metamorphic rocks is obscured by deep overburden which early drilling indicated ranged from 10 - 20 m. Early geological mapping suggested that the meta-basalts belonged to the Slide Mountain Terrane however, recent work by Murphy and Piercey (1999) suggests that this contact is depositional in nature and that the entire package, including Campbell Range belt meta-basalts, represents a transitional island arc/continental arc to marginal basin/ocean (back-arc?) basin environment and together constitute Yukon-Tanana Terrane.
The original occurrence consisted of geochemical anomalies associated with sulphide-bearing quartzite, phyllite and carbonaceous phyllite with minor breccia and quartz veining. Later pyritic siderite veinlets and breccia fillings carrying minor amounts of galena, sphalerite and chalcopyrite were found as float near a small diorite body in an area underlain by carbonaceous phyllite, chlorite schist, and marble.
Yukon Revenue located a copper-zinc anomaly over a strongly leached area from which selected specimens of phyllite assayed up to 2.2% Zn and 0.5% Pb. Drilling intersected schists and phyllites of varying composition including: calcareous schist, carbonaceous schist, quartz-sericite schist, `greenish grey tuffaceous rock¿, and skarn. Mineralization was scarce with the best results obtained from pyritic schist containing traces of galena, chalcopyrite and sphalerite which returned 0.54% Zn, 0.1% Pb and 0.03% Cu over 1.5 m.
Cominco¿s soil sampling work on the Fret claims returned several weak Cu geochemical anomalies, thought to reflect a mafic/ultramafic volcanic association. The airborne and ground geophysics programs outlined several EM conductors and small magnetic highs none of which were coincident. The EM conductors are thought to be structural or related to carbonaceous sediments. The magnetic highs are thought to reflect mafic intrusions. Follow-up soil sampling completed by Pacific Bay outlined scattered Zn and Cu anomalies primarily localized near the southern claim boundary and coincident to a shallow magnetic-EM anomaly.
The1995 soil sampling program carried out by Expatriate on the Play claims identified two anomalies; a) East and b) West. The East anomaly measures approximately 2 300 X 800 m and returned moderate to strongly anomalous response for Cu, Mo, Sb, and Ag. Arsenic and Au response is elevated in a 600 X 200 m area near the northern edge of the grid which is underlain by felsic/intermediate metavolcanics. The West anomaly measures approximately 1 400 x 700 m and returned moderate to strongly anomalous response for Mo, Sb, Ag and Zn.
The 1996 mapping program identified five styles of mineralization on the Play and adjoining Ref claims; 1) 3 cm thick bands of massive pyrite with trace amounts of chalcopyrite, sphalerite and galena hosted by quartz-sericite+/-chlorite schist (east), 2) ferricrete breccia boulders (1.5 x 1.0 x 0.3 m) within graphitic phyllite (west), 3) yellow to brown leached and pitted fragments anomalous in Pb, Ag and Au ((west), 4) pyrite and arsenopyrite-bearing felsic metavolcanic rocks in the northeastern area of the property (500 ppb Au, 1705 ppm As), and 5) sphalerite-galena-chalcopyrite mineralization associated with quartz-carbonate veins and sweats located at various areas around the property.
The 1996 Aerodat survey identified six ¿first priority¿ targets and six `secondary objective¿ targets. The priority targets consisted of conductors with magnetic associations while the secondary targets represented conductors without. No differentiation was possible between the response from very conductive, flat lying to gently dipping sediments and massive sulphide bodies.
Expatriate¿s 1997 exploration program was focused on identifying and evaluating targets with the best economic potential. The company examined the original Minfile occurrence (showing `E¿ ) and noted that it is underlain by graphitic schist, muscovite-chlorite schist and interbedded siltstone and mudstone. No substantial work was carried out on it.
Approximately 1 200 m west of the original occurrence is showing `D¿. This area was formerly staked as the Gem claims and is the site of Yukon Revenue¿s 1977 drilling program. Expatriate reported sulphide mineralization consisting of 3 cm thick bands of massive pyrite with traces of chalcopyrite, sphalerite, and galena in muscovite-chlorite±quartz schist. The company drilled two diamond drill holes to test the showing and the strongest multi-element soil anomaly in the area. The holes intersected graphitic schist containing up to 7 cm wide bands of fine grained pyrite. According to Becker (1998), both holes returned several samples which exceeded the 1% detection limit for phosphorous.
At showing `B¿, located 4.2 km west of the occurrence, the company reported pitted limonite fragments within muscovite-chlorite+/-quartz schist. Soil sampling returned anomalous values for Cu, As and Mo in this area. The company attempted to test the showing with five hand trenches but permafrost prevented them from reaching bedrock. A single drill hole was drilled to test the down dip extension of the surface mineralization however similar mineralization was not intersected.
Showing `C¿ discovered in 1995 is located approximately 5 km northwest of the occurrence location. It consists of a 10 cm thick lens of red and black manganiferous limonite-cemented breccia containing silicified graphitic phyllite fragments. The showing was trenched in 1997 and tested with a single hole. The entire hole was split and assayed but samples returned only slightly anomalous base metal values. Drilling conditions were difficult and core recovery averaged 52% across the entire hole.
Showing `I¿ is located approximately 1 km northwest of the original Minfile occurrence and consists of three sets of quartz veins within quartz-carbonate-muscovite altered metadiorite. Two drill holes were drilled to test the gold content of the veins. Both holes returned broad intervals of anomalous gold with the best intersection returning 1.0 g/t Au over 1.04 m. Other known vein style gold mineralization occurrences were given cursory examinations.
The re-evaluation of the geophysical data was undertaken to correlate geophysical anomalies to known geological units , mineralization and geological structures. The company also checked for any anomalies that might have been missed in the original evaluation of data. Soil and rock sampling confirmed results obtained in previous years.

References

COMINCO LTD, Feb/95. Assessment Report #093345 by P.A. MacRobbie.

COMINCO LTD, Mar/96. Assessment Report #093392 by I. Jackisch.

COMINCO LTD, Feb/98. Assessment Report #093678 by T. J. Bohay.

EXPATRIATE RESOURCES LTD, Aug/96. Assessment Report #093488 by W.A. Wengzynowski.

EXPATRIATE RESOURCES LTD, Apr/97. Assessment Report #093570 by A. Bergert.

EXPATRIATE RESOURCES LTD, May/97. Assessment Report #093655 by Aerodat Inc.

EXPATRIATE RESOURCES LTD, May/98. Assessment Report #093785 by T.C. Becker.

EXPATRIATE RESOURCES LTD, Jun/2002. Assessment Report #094300 by J. Moore and J. Klein.

EXPATRIATE RESOURCES LTD, Jul/2003. Assessment Report #094384 by J. Moore and R. Duncan.

EXPATRIATE RESOURCES LTD, News Release, 15 Dec/2004.

EXPATRIATE RESOURCES LTD, Jan/2004. Web Site: www.expatriateresources.com

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., 1998. The setting of volcanogenic massive sulphide deposits in the Finlayson Lake district. In: Yukon Exploration and Geology 1997, Exploration and Geological Services Division, Indian and Northern Affairs Canada, p. 99-104.

HUNT, J.A., 2001. Volcanic-associated massive (VMS) mineralization in the Yukon-Tanana Terrane and coeval strata of the North American miogeocline, in the Yukon and adjacent areas. Exploration and Geological Services Division, Yukon Region, Indian and Northern Affairs Canada, Bulletin 12, 107 p.

MARGE ENTERPRISES LTD, Feb/77. Assessment Report #062084 by D.W. Goodbrand and A.E. Nevin

MINERAL INDUSTRY REPORT 1976, p. 206; 1977, p. 88.

MORTENSEN, J.K., AND JILSON, G.A., 1985. Evolution of the Yukon-Tanana terrane: evidence from southeastern Yukon Territory. Geology, v. 13, p. 806-810.

MURPHY, D.C., AND PIERCEY, S.J., 1999. Finlayson project: Geological evolution of Yukon-Tanana Terrane and its relationship to Campbell Range belt, northern Wolverine Lake map area, southeastern Yukon. In: Yukon Exploration and Geology 1998, C.F. Roots and D.S. Emond (eds.), Exploration and Geological Services Division, Indian and Northern Affairs Canada, p.47-62.

MURPHY, D.C. and PIERCEY, S.J., 1999. Geological map of parts of Finlayson Lake (105G/7, 8 and parts of 1, 2, and 9) and Frances Lake (parts of 105H/5 and 12) map areas, southeastern Yukon (1:100 000-scale). Exploration and Geological Services Division, Yukon, Indian and Northern Affairs Canada, Open File 1999-4.

MURPHY, D.C. AND PIERCEY, S.J., 2000. Syn-mineralization faults and their re-activation, Finlayson Lake massive sulphide district, Yukon-Tanana Terrane, southeastern Yukon. In: Yukon Exploration and Geology 1999, D.S. Emond and L.H. Weston (eds.), Exploration and Geological Services Division, Yukon, Indian and Northern Affairs Canada, p. 55-66.

MURPHY, D.C. ET AL., 2001. Preliminary bedrock geological map of northern Finlayson Lake area (NTS 105 G), Yukon Territory (1:100 000 scale). Exploration and Geological Services Division, Yukon Region, Indian and Northern Affairs Canada, Open File 2001-33.

MURPHY, D.C. ET AL., 2002. Finlayson Lake Targeted Geoscience initiative (southeastern Yukon), Part 1: Bedrock geology. In: Yukon Exploration and Geology 2001, D.S. Emond, L.H. Weston and L.L. Lewis (eds.), Exploration and Geological Services Division, Yukon Region, Indian and Northern Affairs Canada, p. 189-207.

PACIFIC BAY MINERALS LTD, May/98. Assessment Report #093845 by G.L. Wesa and M.P. Phillips.

YUKON EXPLORATION AND GEOLOGY 1997, p. 16, 37-38; 2002, p. 18, 25.

YUKON REVENUE MINES LTD, Jul/77. Assessment Report #091162, (drill logs) author unknown.

Location Map

Last Updated: Jul 13, 2018

Work History

Year Work Type Comment
2002 Airborne Geophysics: Electromagnetic Also magnetic survey. Company hired consultant to re-evaluate data from 1996 airborne survey.
2002 Geochemistry: Rock
2002 Geochemistry: Soil
1997 Drilling: Diamond Six holes, 662 m. Diamond drilling carried out by Expatriate.
1997 Geochemistry: Soil Soil sampling carried out by Pacific Bay on Fret claims.
1996 Geology: Bedrock Mapping
1996 Ground Geophysics: IP Also HLEM and gravity surveys.
1996 Other: Prospecting
1995 Geochemistry: Soil
1995 Geology: Bedrock Mapping
1995 Other: Prospecting
1994 Geochemistry: Soil
1994 Geology: Bedrock Mapping
1994 Ground Geophysics: Magnetics Also HLEM and gravity surveys.
1994 Airborne Geophysics: Electromagnetic Also magnetic survey. Regional survey.
1977 Drilling: Diamond Four holes, 400 m.
1977 Geochemistry: Soil
1977 Geology: Bedrock Mapping
1976 Geochemistry: Soil
1976 Geology: Bedrock Mapping
1966 Geochemistry: Silt

Regional Geology - Terrane

Group: Intermontane
Affinity: W Laurentia
Name: Yukon-Tanana
Realm: peri-Laurentian


Regional Geology - Bedrock

Supergroup:
Group/Suite: Grass Lakes
Formation: undifferentiated
Member:
Terrane: Yukon-Tanana
Period Max: Devonian
Age Max: 365 MA
Period Min: Devonian
Age Min: 357 MA
Rock Major: phyllite, schist
Rock Minor:
Reference: Murphy et al. (2001) - YGS OF 2001-33
Geological Unit (1M): DMF
Geological Unit (250K): DMF1

Assessment Reports that overlap occurrence

Report Number Year Title Worktypes Holes Drilled Meters Drilled
094384 2002 Geological, Geochemical and Prospecting Report Undertaken on the Play and Ref Properties Soil - Geochemistry, Bedrock Mapping - Geology, Prospecting - Other
094300 2002 2002 Geophysical Report for the Play and Ref Claims in the Watson lake Mining District Yukon Territory, Canada Data Compilation - Pre-existing Data, Process/Interpret - Pre-existing Data
093845 1997 Geological and Geochemical Report on the Fret Property Fret 1-51 Claims Soil - Geochemistry, Bedrock Mapping - Geology
093785 1997 Assessment Report Describing Geological Mapping, Prospecting, Soil Geochemistry, Hand Trenching and Diamond Drilling Diamond - Drilling, Soil - Geochemistry, Bedrock Mapping - Geology, Prospecting - Other, Hand - Trenching 6 662
093570 1996 Assessment Report Describing Geochemical, Geophysical and Claim Surveys on the Power Play Property Electromagnetic - Airborne Geophysics, Magnetic - Airborne Geophysics, Soil - Geochemistry, EM - Ground Geophysics, Magnetics - Ground Geophysics
093655 1996 Report on a Combined Helicopter-Borne Electromagnetic and Magnetic Survey, Goal Net, Hat Trick, League, Offside, Power Play, Shutout and Slapshot Properties Electromagnetic - Airborne Geophysics, Magnetic - Airborne Geophysics
093488 1995 Assessment Report Describing Prospecting and Geochemical Surveys on the Play Property Rock - Geochemistry, Soil - Geochemistry, Bedrock Mapping - Geology, Prospecting - Other
093345 1994 1994 Assessment Report Fret and Dot Properties Soil Geochemistry, Geological Mapping, Linecutting and Ground Geophysics (HLEM, Mag and Gravity) Rock - Geochemistry, Soil - Geochemistry, Bedrock Mapping - Geology, EM - Ground Geophysics, Gravity Survey - Ground Geophysics, Magnetics - Ground Geophysics, Line Cutting - Other

Related References

Number Title Page(s) Document Type
ARMC008919 Sketch map of Kay Nos. 1-6 M.C.'s - Watson Lake M.D Geoscience Map (General)
ARMC016585 Geochemical map - 105G/13 - Weasel Lake Geochemical Map
ARMC016593 Geochemical sample stations map - 105G/13 - Weasel Lake Geochemical Map
ARMC014117 Field sheet of Slate Rapids showing geochemistry overlay on geology Geochemical Map
ARMC016595 Geochemical results map - 105G/13 - Weasel Lake Geochemical Map
ARMC016594 Geology map - 105G/13 - Weasel Lake Geoscience Map (Geological - Bedrock)
ARMC018656 Field map of 105G/13 and 105G/14 with notations Geoscience Map (General)
ARMC014112 Field sheet - 105G/14 - Slate Rapids showing geochem locations and results Geochemical Map
ARMC014113 Field sheet of Slate Rapids with field notations Geochemical Map
Citations

Submit Information to Yukon Geological Survey

Name:

E-mail:

Comment: