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Occurrence Details


Occurrence Number
105K 105
Occurrence Name
Sir John A.
Occurrence Type
Hard-rock
Status
Prospect


General Information

Secondary Commodities: zinc, lead
Aliases: Moni, Tele
Deposit Type(s): Sediment hosted Sedimentary Exhalative Zn-Pb-Ag (Sedex)
Location(s): 62.068330 N, -133.161670 W
NTS Mapsheet(s): 105K03
Location Comments: 1 Kilometres
Hand Samples Available at YGS: No

Capsule

Work History

Staked as MONI & TELE cl (YA18372) in Jun/77 by Woodside Project (Getty & Welcome North), which explored with mapping, geochem, mag and EM surveys in 1977-78, and 5 x-ray holes (97 m) in 1978. Ezee Golds L staked CES cl (YB8372) about 3 km to the north in Oct/87. This occurrence was restaked by J. Murnion in September, 1993 as part of a group of 60 Spud claims (YB38311) which also cover the Fargo occurrence. (MINFILE # 105K 010).

Capsule Geology

Laminated and disseminated sphalerite and minor pyrrhotite occur in bands up to 5 cm thick within a stratigraphic interval of 90 m. Host rocks are siliceous and pyritic slate that have been assigned an Ordovician to Devonian age.
Woodside geologists recognized that mineralization occurs at three separate stratigraphic horizons. The lowest consists of thin laminae of sphalerite and galena in Lower Cambrian impure marble and calcareous phyllite and biotite-garnet schist. The second mineralized layer occurs about 60 m higher and consists of small sphalerite-galena showings in siderite-pyrrhotite-magnetite-garnet-actinolite skarns developed in calcareous beds within graphitic biotite schist. The third consists of scattered stratiform occurrences in the Road River Formation sooty limestone and calcareous argillite.
The best trench samples assayed only 0.2% Pb and 2.9% Zn across 1.5 m. Drilling beneath the trenches returned lower values.

References

EZEE GOLDS LTD, Dec/88. Assessment Report *#092630 by S.B. Cheeseman.

GEOLOGICAL SURVEY OF CANADA Paper 79-1A, p. 375.

MINERAL INDUSTRY REPORT 1977, p. 65; 1978, p. 41.

WOODSIDE PROJECT, May/78. Assessment Report #090348 by G.H. Scott.

Location Map

Last Updated: Jul 31, 2018

Work History

Year Work Type Comment
1978 Drilling: Portable Five holes, 97 m.
1978 Geochemistry: Soil
1978 Geology: Bedrock Mapping
1978 Ground Geophysics: Magnetics Also EM survey.
1977 Geology: Bedrock Mapping
1977 Ground Geophysics: Magnetics Also EM survey.
1977 Other: Prospecting

Regional Geology - Terrane

Group: Ancestral North America
Affinity: W Laurentia
Name: Cassiar
Realm: Laurentia


Regional Geology - Bedrock

Supergroup:
Group/Suite: St. Cyr
Formation:
Member:
Terrane: Cassiar
Period Max: Ordovician
Age Max: 488 MA
Period Min: Silurian
Age Min: 416 MA
Rock Major: shale/slate/quartzite/limestone
Rock Minor:
Reference: Tempelman-Kluit (1977) - GSC OF 486
Geological Unit (1M): CDS
Geological Unit (250K): CDS3

Assessment Reports that overlap occurrence

Report Number Year Title Worktypes Holes Drilled Meters Drilled
092540 1988 Report on Combined Helicopter-Borne Magnetic, Electromagnetic and VLF Survey Electromagnetic - Airborne Geophysics, Magnetic - Airborne Geophysics

Related References

Number Title Page(s) Document Type
ARMC016351 Geochemical survey values map - Cu, Pb, Zn - 105K/3 Faro Geochemical Map
Citations

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