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Occurrence Details


Occurrence Number
115J 030
Occurrence Name
Bran
Occurrence Type
Hard-rock
Status
Anomaly


General Information

Secondary Commodities: copper
Deposit Type(s): Unknown
Location(s): 62.683330 N, -138.924440 W
NTS Mapsheet(s): 115J10
Location Comments: .5 Kilometres
Hand Samples Available at YGS: No

Capsule

Work History

Staked as Bran cl 1-24 (Y39239) in Oct/69 by W. Brander and W. Travers and sold to New Davies Petroleum Ltd. Explored by ground mag and grid soil sampling in 1970 in a joint venture with Kopan Development Ltd.
Restaked as Aztec 1-52 cl (YB37540) in Sep/92 by Renoble Holdings Inc. Renoble staked Maya cl 1-40 (YB37592) to the west and Koffee cl 1-58 (YB37482) to the north at the same time. In Jan/93 Renoble staked Ice cl 1-74 (YB37901) to the northwest. In Mar/93, Renoble optioned all of its claim holdings in the area (Ice, Maya, Aztec and Koffee ) to Eastfield Resources Ltd, subject to a profit sharing agreement. Eastfield also optioned the adjoining Ana claims (located to the northeast) from Nordac Mining Corp at the same time.
In Feb/93 Eastfield optioned a 50% interest in the Aztec and Maya claims to Canadian Comstock Explorations Ltd in return for certain work commitments and option payments. During the 1993 field season Comstock carried out road building, geological mapping, rock and soil sampling and ground magnetic and IP geophysical surveys on the claims. Comstock¿s option was terminated in 1994.
In Jun/96 Eastfield consolidated the Aztec and adjoining Maya, Koffee, Ana, and Ice claim blocks into the Canadian Creek property. Following consolidation Eastfield entered into an option agreement with Alexis Resources Ltd whereby Alexis was granted the right to earn an undivided 51% interest in the property by incurring $1 500 000 in expenditures, paying $250 000 in option payments and issuing 200 000 shares before Jun/2000. In 1996 Alexis completed geophysical and geochemical surveys and extensive excavator trenching on the Koffee and Ana claims.
In May/97 Eastfield reorganized into two companies, one of which is named Wildrose Resources Ltd. The Ana, Koffee, Maya, Aztec and Ice claims were transferred to Wildrose. In 1997 Wildrose and joint venture partner Alexis Resources conducted a program of road-building, drill-pad construction and prospecting on the Canadian Creek property.
In 1999 Wildrose carried out rock and soil sampling and road reclaimation on the Ana and Koffee claims. In May/2000 Wildrose optioned 55 adjoining claims (Casino ¿B¿ claims) from Great Basin Gold Ltd (the successor company of Pacific Sentinel Corporation) and assumed responsibility for filing assessment work on 83 additional claims (Casino ¿A¿ claims) that cover the neighboring Casino deposit. Later in the year Wildrose drilled 12 diamond drill holes (2 066m) on the Casino ¿B¿, Ana and Koffe claims. In 2001 the company carried out an evaluation program on it entire Canadian Creek property. Although little work was completed near this occurrence assessment credit from these programs was used to keep the Aztec claims (including those surrounding this occurrence) in good standing.
In Dec/2002 Wildrose optioned a 60% participating interest in it¿s Canadian Creek property to Canley Developments Inc. The agreement includes the claims covering this occurrence.

Capsule Geology

The region around the occurrence largely escaped Pleistocene glaciation. The result is that there is less than 1% outcrop by area over much of the region and weathered rocks commonly extend to depths of greater than 75 m. Johnston (1995) used data acquired from an airborne multiparameter geophysical survey conducted in 1993 and 1994 to improve the existing geological knowledge of the region.
Johnston¿s work indicates that the area is underlain by Yukon Tanana Terrane rocks, consisting of Devonian to Mississippian metavolcanic and metaigneous rocks belonging to the Wolverine Creek Metamorphic Suite. The metamorphic rocks form a synform which is cored by intermediate rocks of the Mid-Cretaceous Dawson Range Batholith. The batholith consists of mafic, intermediate and felsic phases. The mafic and intermediate phases are sheet or sill-like bodies that are concordant with foliation in the `pendant¿ and in adjacent metamorphic wall rocks. The felsic phase forms discordant plugs that intrude the more mafic phases of the batholith and its wall rocks.
The Dawson Range batholith is in turn intruded by the Casino Plutonic Suite which is represented by fine- to medium-grained leucocratic granite, quartz monzonite and alaskite with associated aplite phases. The Casino Plutonic Suite is composed of stocks up to 18 km in diameter and is only exposed in the Colorado Creek (NTS 115 J/9) and Selwyn River (NTS 115 J/10) map areas. The Casino Plutonic Suite was originally thought to be Late Cretaceous (70 Ma) but work by Selby et al., (1999) indicates that although the Casino Plutonic Suite intrudes the Dawson Range Batholith, it¿s age is indistinguishable (104.2 +/- 0.5 Ma, U-Pb zircon). Late Cretaceous igneous activity produced a northwest-trending belt of small stocks, one of which, the Patton porphyry intrudes the Casino Plutonic Suite rocks and producing the copper-gold-molybdenum mineralization present at the neighboring Casino deposit (Minfile Occurrence #115J 028).
The occurrence is underlain by Dawson Range Batholith hornblende-biotite diorite. The occurrence location appears to represent the mid-point between several minor copper soil point anomalies discovered by New Davies.
Comstock¿s exploration program concentrated on the western half of the Aztec claims. Several weak geochemical and geophysical anomalies were found however none were judged significant enough to warrant follow up work. The 1996 through 1998 work programs were carried out to follow up geophysical targets and delineate future drill targets. The bulk of the work was carried out on the adjacent Koffee and Ana claims.
No recent work appears to have been carried out in the vicinity of this occurrence.

References

EASTFIELD RESOURCES LTD, Dec/93. Assessment Report #093144 by J. Chapman and G. Garratt.

GEORGE CROSS NEWSLETTER, 22 Feb/93; 28 Feb/94; 17 Mar/97; 13 Aug/97.


GORDEY, S.P., AND MAKEPEACE, A.J., 1999. Yukon digital geology, S.P. Gordey and A.J. Makepeace (comp.); Geological Survey of Canada, Open File D3826, and Exploration and Geological Services Division, Yukon, Indian and Northern Affairs Canada, Open File 1999-1 (D)

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).

JOHNSTON, S.T. AND SHIVES, R.B.K., 1995. Interpretation of an airborne multiparameter geophysical survey of the Northern Dawson Range, central Yukon. A progress report. In Yukon Exploration and Geology, 1994. Exploration and Geological Services Division, Yukon, Indian and Northern Affairs Canada, p. 105-111.

JOHNSTON, S.T., 1995. Geological compilation with interpretation from geophysical surveys of the northern Dawson Range, central Yukon. (115J/9 & 10; 115I/12) (1:100 00 scale map). Exploration and Geological Services Division, Yukon, Indian and Northern Affairs Canada, Open File 1995-2 (G).

KOPAN DEVELOPMENTS LTD AND NEW DAVIES PETROLEUM LTD, Oct/70. Assessment Report #060224 by G.L. Kirwan.

MINCORD EXPLORATION CONSULTANTS, Dec/93. Assessment Report #093144 by J. Chapman and G. Garratt.

MINERAL INDUSTRY REPORT 1969-70, p. 58.

SELBY, D. and NESBITT, B.E., 1998. Biotite chemistry of the Casino Porphyry Cu-Mo-Au Occurrence, Dawson Range, Yukon. In: Yukon Exploration and Geology 1997. Exploration and Geological Services Division, Yukon, Indian and Northern Affairs Canada, p. 83-88.

SELBY, D. ET AL., 1999. Major and trace element compositions and Sr-Nd-Pb systematics of crystalline rocks from the Dawson Range, Yukon Canada. In: Canadian Journal of Earth Sciences, Volume 36, p. 1463-1481.

WILDROSE RESOURCES LTD ET AL., Feb/2001. Assessment Report #094169 by J.W. Morton.

WILDROSE RESOURCES LTD ET AL., Feb/2002. Assessment Report #094244 by J.W. Morton.

WILDROSE RESOURCES LTD, News Release, 19 Dec/2002; 1 Dec/2003.

WILDROSE RESOURCES LTD, Jan/99. Web Site: www.direct.ca/wildrose

YUKON EXPLORATION AND GEOLOGY 1993, p. 4, 6, 8; 1994 p. 10; 1996 p. 24, 30; 1997 p. 24, 35.

Location Map

Last Updated: Aug 31, 2018

Work History

Year Work Type Comment
1997 Development, Surface: Access Road Built roads and drill pads.
1993 Development, Surface: Access Road
1993 Geochemistry: Rock Also soil sampling.
1993 Geology: Bedrock Mapping
1993 Ground Geophysics: IP Also magnetic survey.
1970 Geochemistry: Soil
1970 Ground Geophysics: Magnetics

Regional Geology - Terrane

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


Regional Geology - Bedrock

Supergroup:
Group/Suite: Whitehorse
Formation: Dawson Range
Member:
Terrane:
Period Max: Cretaceous
Age Max: 107 MA
Period Min: Cretaceous
Age Min: 94 MA
Rock Major: tonalite
Rock Minor: granite
Reference: Ryan et al. (2013) - GSC CGM 117
Geological Unit (1M): mKW
Geological Unit (250K): mKgW

Assessment Reports that overlap occurrence

Report Number Year Title Worktypes Holes Drilled Meters Drilled
096177 2012 Airborne Magnetic-Radiometric Survey Report on Grout, Quo Claim Groups at Doyle Creek area Gamma-Ray Spectrometry - Airborne Geophysics, Magnetic - Airborne Geophysics
096084 2012 Assessment Work Report-Airborne Magnetic-Radiometric Survey Report on Quo Claims Property Gamma-Ray Spectrometry - Airborne Geophysics, Magnetic - Airborne Geophysics
095429 2010 2010 Assesment Work Report-An Airborn Magnetic-Radimetric Survey Report on Grout Claims Gamma-Ray Spectrometry - Airborne Geophysics, Magnetic - Airborne Geophysics
019767 1970 Geophysical Report on Airborne Magnetic and Airborne Radiometric Surveys Gamma-Ray Spectrometry - Airborne Geophysics, Magnetic - Airborne Geophysics
060224 1970 New Davies Petroleums Ltd. -Kopan Developments Ltd.-Gepophysical-Geochemical Survey-Carmacks Area Soil - Geochemistry, Magnetics - Ground Geophysics, Line Cutting - Other
019098 1965 Geophysical Report-Cat Claims-Casino Creek Area Magnetic - Airborne Geophysics

Related References

Number Title Page(s) Document Type
ARMC012481 Vertical section I - Trench "C" - Casino - Fig. 3 Geoscience Map (General)
ARMC012482 Vertical section II - Casino - Fig. 4 Geoscience Map (General)
ARMC012483 Vertical section III - Casino - FIg. 5 Geoscience Map (General)
ARMC012484 Plan map of diamond drilling and provisional geology - Casino Geoscience Map (Geological - Bedrock)
ARMC012486 Maps, special release report and report to the shareholders on the Casino and Canadian Creek property, Y.T. Geoscience Map (Geological - Bedrock)
ARMC012489 Some remarks concerning the geology of the "Canadian Basin" Miscellaneous Company Documents
ARMC012480 Comparison of anomaly contrasts for total and cold-extractable Cu on stream sediments - Casino - Fig. 2 Miscellaneous Company Documents
ARMC012478 Location plan - Casino area claims - 1969 Geoscience Map (General)
ARMC012477 Location plan of Aztec No. 1 to 151, Squaw No. 1 to 12, Tlingits No. 1 to 12 mineral claims - Job # 373-69 Geoscience Map (General)
ARMC016558 Geochemical values total extraction map - 115J/10 - Colorado Creek Geochemical Map
ARMC012487 Geology and rotary drilling at the Casino deposit Report
ARMC012485 Department of mines map - Klotassin River with hand drawn geology markings - Casino Geoscience Map (General)
ARMC012479 Sample location map - Casino geochemical orientation survey - Fig. 1 Geoscience Map (General)
ARMC016557 Geology map - 115J/10 - Colorado Creek Geoscience Map (Geological - Bedrock)
ARMC012488 Dispersion of some minor elements in the vicinity of Casino orebody Report
Citations

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