General Information
Secondary Commodities: copper, gold, lead, silver, zinc
Aliases: Hawk Eye, Hidden Ore, Midnight
Deposit Type(s): Vein Au-Quartz
Location(s): 60.214440 N, -134.991670 W
NTS Mapsheet(s): 105D02
Location Comments: .5 Kilometres
Hand Samples Available at YGS: No
Capsule
Work History
The first claims were staked in 1906 by G. Stevens, M. Gilliam, O. Dickson (Acme cl) and C.E. Burnside (Hawk Eye group), who explored with 3 short adits and a number of trenches. Restaked about 1920 as the Midnight group (18891) by M. Watson and E. Johnson, and Gladys, Sarah J claims (18907) by T. Brooks, who did more drifting and trenching until 1940. Brooks and Watson restaked the Acme claims farther uphill near the ridge crest as the Hidden Ore group (19082) about 1933 and trenched until 1940. In the fall of 1939, the property was optioned by J.B. White of Spokane.
Restaked as MO cl(4589) and Cub cl (56208) in 1947 by P.M. Lander, who did only minor work. Restaked as Minite cl (85059) in Apr/63 by F. Merryth; as Brooks cl (Y10065) in Aug/66 by G. Simmons and W. Phelps; as EB cl (Y78480) in Apr/74 by C. Bernier; as Ram cl (YA22403) in Mar/78 by G. Sherman.
Island Mg & EL tied on JL cl (YA59033) to the east in Oct/80 and performed mapping and sampling in 1981. Restaked as Ton cl (YA78181) in Aug/83 by Can Nickel (Inco), which performed mapping and geochem sampling later in the year and optioned the property to Island Mg & ECL. Island performed more mapping and geochem sampling in 1985 and drilled 5 holes (411.4 m) in 1986, and 4 holes (453.8 m) on claims JL 17 & 18 and 4 holes (335.3 m) on claim Ton 10 in 1987.
Capsule Geology
A large quartz lens 30 m long and 9 m wide carrying a little galena and pyrite was found on the Acme claims, on top of Mt Stevens. All other showings are on the east slope of the mountain. Two quartz veins 0.6 and 1.1 m wide were found on the Hawk Eye claims. These veins contained disseminated galena and chalcopyrite. Later work on the Midnight group showed that mineralization is related to altered granite porphyry dykes 7.6 to 15 m wide, which cut altered volcanic rocks. Early government reports indicated that these dykes are highly sericitized and seamed by myriad quartz veinlets which locally contain native gold, pyrite and galena. Gold values are restricted to sulphide zones, which in turn are localized along cross-fractures cutting the dykes. On the Hidden Ore claims near the granodiorite contact, the dykes were reportedly so fractured and altered that they resembled breccias cemented by quartz veins 0.6 to 5 cm wide. Native gold, galena, pyrite and minor sphalerite and chalcopyrite were present in the quartz.
A surface examination in 1972 failed to substantiate previous descriptions although limonite-stained quartz veins are present. Pyrite and galena-rich samples of quartz assayed less than 0.34 g/t Ag and 0.07 g/t Au. Soil sampling returned only background metal values.
Work in 1985-87 located three types of mineralization on the east slope of Mt Stevens and the headwaters of Stevens Creek: (1) gold-silver bearing quartz veins in rhyolite dykes; (2) galena-bearing quartz veins with gold and silver values in quartz diorite; and (3) galena-sphalerite-pyrite fracture fillings in quartz diorite. Results were generally disappointing, with the highest values coming from a specimen of galena-bearing quartz float that assayed 486 g/t Ag, 22 g/t Au and 1% Pb, and a thin quartz vein cutting a rhyolite dyke in a drill hole, which assayed 4 g/t Ag and 11.5 g/t Au over 46 cm.
References
CANADIAN NICKEL COMPANY LTD, Jul/84. Assessment Report *#091548 by W. Manson.
CREAM SILVER MINES LTD, 1974. Assessment Report *#061148 by H.J. Toohey.
GEOLOGICAL SURVEY OF CANADA Memoir 31, p. 106; Memoir 220, p.173; Memoir 312, p. 121-122.
GEOLOGICAL SURVEY OF CANADA Summary Report 1909, p. 52-53; Summary Report 1922, p. 6-7.
ISLAND MINING AND EXPLORATION COMPANY LTD, 1981. Assessment Report *#090894 by F. Holcapek.
ISLAND MINING AND EXPLORATION COMPANY LTD, Apr/86. Assessment Report *#091844 by C.G. Verley.
ISLAND MINING AND EXPLORATION COMPANY LTD, Jun/86. Assessment Report *#091841 by C.G. Verley.
ISLAND MINING AND EXPLORATION COMPANY LTD and CANADIAN NICKEL COMPANY LTD, Oct/86. Assessment Report *#091910 by T. Garagan.
ISLAND MINING AND EXPLORATION COMPANY LTD, Nov/86. Assessment Report *#091874 by T. Garagan.
ISLAND MINING AND EXPLORATION COMPANY LTD, Feb/87. Assessment Report #093087 by A. Montgomery.
ISLAND MINING AND EXPLORATION COMPANY LTD, Dec/87. Assessment Report *#091991 by A. Montgomery.
ISLAND MINING AND EXPLORATION COMPANY LTD, May/88. Assessment Report *#092144 by A. Montgomery.
WESTERN MINER, Dec/47, p. 35.
YUKON EXPLORATION 1985-86, p. 165-166.
YUKON EXPLORATION AND GEOLOGY 1981, p. 115; 1982, p. 115-116; 1983, p. 160-161; 1984, p. 70.
The first claims were staked in 1906 by G. Stevens, M. Gilliam, O. Dickson (Acme cl) and C.E. Burnside (Hawk Eye group), who explored with 3 short adits and a number of trenches. Restaked about 1920 as the Midnight group (18891) by M. Watson and E. Johnson, and Gladys, Sarah J claims (18907) by T. Brooks, who did more drifting and trenching until 1940. Brooks and Watson restaked the Acme claims farther uphill near the ridge crest as the Hidden Ore group (19082) about 1933 and trenched until 1940. In the fall of 1939, the property was optioned by J.B. White of Spokane.
Restaked as MO cl(4589) and Cub cl (56208) in 1947 by P.M. Lander, who did only minor work. Restaked as Minite cl (85059) in Apr/63 by F. Merryth; as Brooks cl (Y10065) in Aug/66 by G. Simmons and W. Phelps; as EB cl (Y78480) in Apr/74 by C. Bernier; as Ram cl (YA22403) in Mar/78 by G. Sherman.
Island Mg & EL tied on JL cl (YA59033) to the east in Oct/80 and performed mapping and sampling in 1981. Restaked as Ton cl (YA78181) in Aug/83 by Can Nickel (Inco), which performed mapping and geochem sampling later in the year and optioned the property to Island Mg & ECL. Island performed more mapping and geochem sampling in 1985 and drilled 5 holes (411.4 m) in 1986, and 4 holes (453.8 m) on claims JL 17 & 18 and 4 holes (335.3 m) on claim Ton 10 in 1987.
Capsule Geology
A large quartz lens 30 m long and 9 m wide carrying a little galena and pyrite was found on the Acme claims, on top of Mt Stevens. All other showings are on the east slope of the mountain. Two quartz veins 0.6 and 1.1 m wide were found on the Hawk Eye claims. These veins contained disseminated galena and chalcopyrite. Later work on the Midnight group showed that mineralization is related to altered granite porphyry dykes 7.6 to 15 m wide, which cut altered volcanic rocks. Early government reports indicated that these dykes are highly sericitized and seamed by myriad quartz veinlets which locally contain native gold, pyrite and galena. Gold values are restricted to sulphide zones, which in turn are localized along cross-fractures cutting the dykes. On the Hidden Ore claims near the granodiorite contact, the dykes were reportedly so fractured and altered that they resembled breccias cemented by quartz veins 0.6 to 5 cm wide. Native gold, galena, pyrite and minor sphalerite and chalcopyrite were present in the quartz.
A surface examination in 1972 failed to substantiate previous descriptions although limonite-stained quartz veins are present. Pyrite and galena-rich samples of quartz assayed less than 0.34 g/t Ag and 0.07 g/t Au. Soil sampling returned only background metal values.
Work in 1985-87 located three types of mineralization on the east slope of Mt Stevens and the headwaters of Stevens Creek: (1) gold-silver bearing quartz veins in rhyolite dykes; (2) galena-bearing quartz veins with gold and silver values in quartz diorite; and (3) galena-sphalerite-pyrite fracture fillings in quartz diorite. Results were generally disappointing, with the highest values coming from a specimen of galena-bearing quartz float that assayed 486 g/t Ag, 22 g/t Au and 1% Pb, and a thin quartz vein cutting a rhyolite dyke in a drill hole, which assayed 4 g/t Ag and 11.5 g/t Au over 46 cm.
References
CANADIAN NICKEL COMPANY LTD, Jul/84. Assessment Report *#091548 by W. Manson.
CREAM SILVER MINES LTD, 1974. Assessment Report *#061148 by H.J. Toohey.
GEOLOGICAL SURVEY OF CANADA Memoir 31, p. 106; Memoir 220, p.173; Memoir 312, p. 121-122.
GEOLOGICAL SURVEY OF CANADA Summary Report 1909, p. 52-53; Summary Report 1922, p. 6-7.
ISLAND MINING AND EXPLORATION COMPANY LTD, 1981. Assessment Report *#090894 by F. Holcapek.
ISLAND MINING AND EXPLORATION COMPANY LTD, Apr/86. Assessment Report *#091844 by C.G. Verley.
ISLAND MINING AND EXPLORATION COMPANY LTD, Jun/86. Assessment Report *#091841 by C.G. Verley.
ISLAND MINING AND EXPLORATION COMPANY LTD and CANADIAN NICKEL COMPANY LTD, Oct/86. Assessment Report *#091910 by T. Garagan.
ISLAND MINING AND EXPLORATION COMPANY LTD, Nov/86. Assessment Report *#091874 by T. Garagan.
ISLAND MINING AND EXPLORATION COMPANY LTD, Feb/87. Assessment Report #093087 by A. Montgomery.
ISLAND MINING AND EXPLORATION COMPANY LTD, Dec/87. Assessment Report *#091991 by A. Montgomery.
ISLAND MINING AND EXPLORATION COMPANY LTD, May/88. Assessment Report *#092144 by A. Montgomery.
WESTERN MINER, Dec/47, p. 35.
YUKON EXPLORATION 1985-86, p. 165-166.
YUKON EXPLORATION AND GEOLOGY 1981, p. 115; 1982, p. 115-116; 1983, p. 160-161; 1984, p. 70.
Location Map
Last Updated: Sep 15, 2011
Work History
| Year | Work Type | Comment |
|---|---|---|
| 1987 | Drilling: Diamond | Number of holes drilled: 8 Amount of work done: 789.1 METRES |
| 1986 | Drilling: Diamond | Number of holes drilled: 5 Amount of work done: 411.5 METRES |
| 1985 | Geology: Bedrock Mapping | |
| 1985 | Other | |
| 1983 | Geology: Bedrock Mapping | |
| 1983 | Other | |
| 1940 | Other | Work carried out between 1920 and 1940. |
| 1906 | Other | Three short adits. |
| 1906 | Trenching |
Regional Geology - Terrane
Group: Intermontane
Affinity: W Laurentia
Name: Stikinia
Realm: peri-Laurentian
Regional Geology - Bedrock
Supergroup:
Group/Suite: Lewes River
Formation: Povoas
Member:
Terrane: Stikinia
Period Max: Triassic
Age Max: 229 MA
Period Min: Triassic
Age Min: 217 MA
Rock Major: argillite/sandstone/basalt/flows/breccia/tuff/schist/amphibolite/gneiss
Rock Minor: dacite/limestone
Reference: Hart & Radloff (1990) - YGS OF 1990-4
Geological Unit (1M): uTrP
Geological Unit (250K): uTrP
Assessment Reports that overlap occurrence
| Report Number | Year | Title | Worktypes | Holes Drilled | Meters Drilled |
|---|---|---|---|---|---|
| 091991 | 1987 | Diamond Drill Report, Midnight Gulch Project | Diamond - Drilling, Drill Core - Geochemistry | 8 | 898.50 |
| 092144 | 1987 | Geological, Geochemical, Trenching and Diamond Drilling Report on Midnight Gulch Property | All Weather Road - Development, Surface, Diamond - Drilling, Drill Core - Geochemistry, Rock - Geochemistry, Soil - Geochemistry, Detailed Bedrock Mapping - Geology, Line Cutting - Other, Backhoe - Trenching | 8 | 898.50 |
| 091844 | 1986 | Geological and Geochemical Report on the JL 1-80 Claims | Rock - Geochemistry, Soil - Geochemistry, Bedrock Mapping - Geology | ||
| 093087 | 1986 | Summary Report on 1986 Exploration Activity,Midnight Gulch Property | All Weather Road - Development, Surface, Diamond - Drilling, Drill Core - Geochemistry, Rock - Geochemistry, Soil - Geochemistry, Detailed Bedrock Mapping - Geology, Prospecting - Other, Hand - Trenching, Mechanical - Trenching | 5 | 228 |
| 091874 | 1986 | Cat Trenching Island Fractional Claims 1 and 2 | Rock - Geochemistry, Soil - Geochemistry, Mechanical - Trenching | ||
| 091910 | 1986 | [Diamond Drilling on the Ton and JL Claims] | Diamond - Drilling | 5 | 228 |
| 091841 | 1985 | Geological and Geochemical Report on the Ton 1-16 Claims | Rock - Geochemistry, Soil - Geochemistry, Detailed Bedrock Mapping - Geology, Line Cutting - Other | ||
| 090894 | 1981 | Geology and Evaluation of the JL 1-24 Mineral Claims | Rock - Geochemistry, Soil - Geochemistry, Detailed Bedrock Mapping - Geology, Line Cutting - Other, Property Evaluation - Other, Hand - Trenching | ||
| 061148 | 1974 | Addendum Report on the EB Claims | Data Compilation - Pre-existing Data, Research/Summarize - Pre-existing Data | ||
| 017504 | 1966 | Report on the Geological and Diamond Drill Programs on the Tally-Ho Gulch, Alta and Car Claim Groups | Diamond - Drilling, Drill Core - Geochemistry, Drill Cuttings - Geochemistry, Rock - Geochemistry | 5 | 459.94 |
Related References
| Number | Title | Page(s) | Document Type |
|---|---|---|---|
| ARMC014201 | Claim and exploration map of Midnight group, H.O. group and Hidden Ore group | Geoscience Map (General) | |
| ARMC014200 | Claim and exploration maps of Old Showing, Midnight group and Hidden Ore group | Geoscience Map (General) |
| Citations |
|---|
Drill Core at YGS Core Library
| Number | Property | Year Drilled | Core Size | Photos | Data |
|---|---|---|---|---|---|
| DDH-87-A1 | Mount Stevens | 1987 | HQ-NQ | 16 | 2 |
| DDH-87-C1 | Mount Stevens | 1987 | HQ-NQ | 20 | 2 |
| DDH-87-I1 | Mount Stevens | 1987 | HQ-NQ | 15 | 3 |
| DDH-87-I2 | Mount Stevens | 1987 | HQ-NQ | 12 | 3 |
| DDH-87-WB1 | Mount Stevens | 1987 | HQ-NQ | 16 | 2 |
| DDH-87-WB2 | Mount Stevens | 1987 | HQ-NQ | 16 | 2 |
| DDH-87-WB3 | Mount Stevens | 1987 | HQ-NQ | 20 | 3 |
| DDH-87-WB4 | Mount Stevens | 1987 | HQ-NQ | 14 | 3 |
