General Information
Secondary Commodities: zinc, copper
Aliases: Cad
Deposit Type(s): Skarn Cu
Location(s): 61.5075 N, -137.543330 W
NTS Mapsheet(s): 115H12
Location Comments: .5 Kilometres
Hand Samples Available at YGS: No
Capsule
Work History
Staked as Cad cl (Y35352) in Jun/69 by M. Nichiporick, who carried out geochem sampling and optioned the claims to Crest Dev L in Dec/69. The option was transferred in 1970 to Yreka ML, which conducted grid soil sampling, EM 16, mag and IP surveys and drilled 730.3 m (9 holes) before dropping the option. The property was optioned again in Sep/70 by Caltor Synd (Rayrock ML, Ashland O & GL, and Can Ind O & GL), which drilled an additional 363.0 m (3 holes) in early 1971. Nichiporick drilled one x-ray hole (8.5 m) in 1974.
In Dec/69 a rush developed and over 900 claims were staked along the east side of Sekulmun Lake. The companies involved were Yreka ML - Gem cl (Y44238) and Cad cl (Y45738), Giant EL - Bow cl (Y45690); Noranda ML - Joyce (Y45546); Brameda Res L - Anne cl (Y45442); Panther ML - Sue 1-32 cl (Y45380); and Eagle Ind L - Sue 33-64 cl (Y45412). In addition, 90 claims - Hot cl (Y50008) and Liz cl (Y51044) were staked on the west side of the lake.
Noranda staked the SEK cl (YA19288) 3.2 km to the east in Nov/77 and explored with mapping and soil sampling in 1978.
Restaked as Blin cl (YB26676) in Jul/89 by Noranda ECL.
Capsule Geology
Sphalerite occurs with pyrite and minor chalcopyrite and scheelite in garnet-diopside-magnetite skarns and diopside-actinolite skarns that have developed in marble bands in a pyritic quartzite sequence. The skarns have developed near quartz-feldspar-biotite porphyry dykes. The metasedimentary sequence dips gently northwest under the lake. The discovery showing is about 40 m long and up to 8 m thick and returned assays of up to 18.0% Zn and 0.4% Cu. A large area with weakly anomalous zinc values was located by soil sampling.
Only two of the original 9 holes, both at the discovery showing, cut significant mineralization. One intersected 9.15 m assaying 0.56% Zn and the other cut 4.58 m assaying 1.84% Zn. The Caltor drilling cut a number of narrow zones with traces of chalcopyrite and sphalerite in a pyrite-pyrrhotite gangue. The best interval assayed 0.16% Zn, 0.02% Cu, 2.1 g/t Ag and trace gold across 0.6 m.
Caltor relogged the Yreka drillholes and found minor scheelite associated with the mineralized sections and occasional disseminated scheelite elsewhere in the holes.
Noranda located minor pyrrhotite with small galena-filled fractures along the margin of a stock.
References
CALTOR SYNDICATE, Aug/71. Engineer's Report by D.J. Henderson.
MINERAL INDUSTRY REPORT 1978, p. 47.
NORANDA EXPLORATION COMPANY LTD, 1978. Assessment Report *#090350 by G. Macdonald and M. Vetterli.
YREKA MINES LTD, Feb 70. Assessment Report by R.G. Hilker.
YREKA MINES LTD, 1971. Assessment Report #090944 by G. Carlson and G.S. Zimmer.
YUKON GEOLOGY AND EXPLORATION 1979-80, p.102
Staked as Cad cl (Y35352) in Jun/69 by M. Nichiporick, who carried out geochem sampling and optioned the claims to Crest Dev L in Dec/69. The option was transferred in 1970 to Yreka ML, which conducted grid soil sampling, EM 16, mag and IP surveys and drilled 730.3 m (9 holes) before dropping the option. The property was optioned again in Sep/70 by Caltor Synd (Rayrock ML, Ashland O & GL, and Can Ind O & GL), which drilled an additional 363.0 m (3 holes) in early 1971. Nichiporick drilled one x-ray hole (8.5 m) in 1974.
In Dec/69 a rush developed and over 900 claims were staked along the east side of Sekulmun Lake. The companies involved were Yreka ML - Gem cl (Y44238) and Cad cl (Y45738), Giant EL - Bow cl (Y45690); Noranda ML - Joyce (Y45546); Brameda Res L - Anne cl (Y45442); Panther ML - Sue 1-32 cl (Y45380); and Eagle Ind L - Sue 33-64 cl (Y45412). In addition, 90 claims - Hot cl (Y50008) and Liz cl (Y51044) were staked on the west side of the lake.
Noranda staked the SEK cl (YA19288) 3.2 km to the east in Nov/77 and explored with mapping and soil sampling in 1978.
Restaked as Blin cl (YB26676) in Jul/89 by Noranda ECL.
Capsule Geology
Sphalerite occurs with pyrite and minor chalcopyrite and scheelite in garnet-diopside-magnetite skarns and diopside-actinolite skarns that have developed in marble bands in a pyritic quartzite sequence. The skarns have developed near quartz-feldspar-biotite porphyry dykes. The metasedimentary sequence dips gently northwest under the lake. The discovery showing is about 40 m long and up to 8 m thick and returned assays of up to 18.0% Zn and 0.4% Cu. A large area with weakly anomalous zinc values was located by soil sampling.
Only two of the original 9 holes, both at the discovery showing, cut significant mineralization. One intersected 9.15 m assaying 0.56% Zn and the other cut 4.58 m assaying 1.84% Zn. The Caltor drilling cut a number of narrow zones with traces of chalcopyrite and sphalerite in a pyrite-pyrrhotite gangue. The best interval assayed 0.16% Zn, 0.02% Cu, 2.1 g/t Ag and trace gold across 0.6 m.
Caltor relogged the Yreka drillholes and found minor scheelite associated with the mineralized sections and occasional disseminated scheelite elsewhere in the holes.
Noranda located minor pyrrhotite with small galena-filled fractures along the margin of a stock.
References
CALTOR SYNDICATE, Aug/71. Engineer's Report by D.J. Henderson.
MINERAL INDUSTRY REPORT 1978, p. 47.
NORANDA EXPLORATION COMPANY LTD, 1978. Assessment Report *#090350 by G. Macdonald and M. Vetterli.
YREKA MINES LTD, Feb 70. Assessment Report by R.G. Hilker.
YREKA MINES LTD, 1971. Assessment Report #090944 by G. Carlson and G.S. Zimmer.
YUKON GEOLOGY AND EXPLORATION 1979-80, p.102
Location Map
Last Updated: Jun 27, 2018
Work History
| Year | Work Type | Comment |
|---|---|---|
| 1974 | Drilling: Diamond | One hole, 8.5 m, X-ray size. |
| 1971 | Drilling: Diamond | Three holes, 363 m. |
| 1971 | Geochemistry: Soil | |
| 1971 | Ground Geophysics: EM | Also magnetometer and I.P. surveys. |
| 1969 | Geochemistry: Rock |
Regional Geology - Terrane
Group: Intermontane
Affinity: W Laurentia
Name: Yukon-Tanana
Realm: peri-Laurentian
Regional Geology - Bedrock
Supergroup:
Group/Suite: Finlayson
Formation:
Member: meta-siliclastic
Terrane: Yukon-Tanana
Period Max: Devonian
Age Max: 375 MA
Period Min: Carboniferous
Age Min: 345 MA
Rock Major: psammitic schist
Rock Minor: pelitic schist
Reference: Israel et al. (2011) - YGS OF 2011-2
Geological Unit (1M): DMF
Geological Unit (250K): DMF3
Assessment Reports that overlap occurrence
| Report Number | Year | Title | Worktypes | Holes Drilled | Meters Drilled |
|---|---|---|---|---|---|
| 096342 | 2012 | Geological & Geochemical Report Mapping and Soil Surveys on the Kluane Properties: Agate, April, Arm, Beryl, BWICK, Garnet-Topaz, Glad, Kilo, Pluto-Venus, Sapphire, and Serp | Gamma-Ray Spectrometry - Airborne Geophysics, Magnetic - Airborne Geophysics, Rock - Geochemistry, Soil - Geochemistry, Detailed Bedrock Mapping - Geology | ||
| 090944 | 1970 | Diamond Drilling Geological Logs & Sections | Drill Core - Geochemistry |
Related References
| Number | Title | Page(s) | Document Type |
|---|---|---|---|
| ARMC013178 | Air photo overlays and silt sample notes of Victor OEX and Nisling - 115-H-12 | Geoscience Map (General) | |
| ARMC013175 | Map sheet 115H-12 of Albert Creek with geological notations | Geoscience Map (Geological - Bedrock) | |
| ARMC016657 | Geology map - 115H/12 - Albert Creek | Geoscience Map (Geological - Bedrock) | |
| ARMC013177 | Map of Albert Creek with field markings - Aeromagnetic series map 3294G | Geophysical Map | |
| ARMC013176 | Map of Albert Creek with geology field markings - Aeromagnetic series map 3294G | Geophysical Map | |
| ARMC016658 | Geochemistry map - 115H/12 - Albert Creek | Geochemical Map |
| Citations |
|---|
Drill Core at YGS Core Library
| Number | Property | Year Drilled | Core Size | Photos | Data |
|---|---|---|---|---|---|
| 70-1 | Sekulmun Lake | 1970 | AQ | 0 | 2 |
| 70-2 | Sekulmun Lake | 1970 | AQ | 0 | 2 |
