Detailed Summary Report

Assessment Report: 17297

Property Name Central 89
17297.pdf
Location
NAD 83
50° 36' 38.00'' N, 127° 30' 23.00'' W
50.610556, -127.506389
UTM: Easting 605679, Northing 5607583, Zone 9 (North)
NAD 27
50° 36' 38.48'' N, 127° 30' 18.24'' W
50.610689, -127.505066
UTM: Easting 605775, Northing 5607381, Zone 9 (North)
NTS 092L12E
BCGS 092L063
Mining Divisions Nanaimo
Mining Camp Island Copper Area
Title Assessment Report on the Central 89 Group
Report Year 1988
Number of Pages 271
Statements of Work n/a
Affidavit Date 1988-01-08
Off Confidential 1989-01-08
Claims Mining Lease 34
General Work Categories Drilling, Geochemical
Operators BHP-Utah Mines
Owners Milbourne, G.
BHP-Utah Mines
Authors Clarke, G.A.
Fleming, J.A.
Burt, P.D.
MINFILE Nos 092L 099, 092L 136
Commodities Copper, Molybdenum/Molybdenite
Work Done
Drilling Diamond surface 14 hole(s); HQ NQ; 2905.0 m; No. of maps: 22; Scale(s): 1:1200, 1:12 000, 1:240
Geochemical Sampling/assaying 899 sample(s)
Elements Analyzed For Silver, Gold, Copper, Molybdenum/Molybdenite, Lead, Zinc
Keywords
Related Report(s) 13346, 12271, 11366, 8150, 7427
File(s) 17297.pdf
Geological Summary
The Bay (Frances) Lake area, located immediately northwest of the Island Copper pit, is underlain by faulted, locally highly fractured, hydrothermally altered andesitic fragmental rocks with textures ranging from fine ash tuffs to volcanic breccias. Quartz- feldspar porphyry dykes with associated sericite-pyrophyllite wallrock alteration cuts the tuffs. Copper mineralization occurs as narrow, high grade chalcopyrite bearing structures cutting propylitically altered fragmental andesites on the southwest corner of the lake, as disseminated chalcopyrite in biotite-chlorite-magnetite altered and silicified andesites in a small tabular deposit grading >0.30 per cent copper across the north of the lake and as a broad expanse of low grade <0.30 per cent copper across the north side of the lake in biotite-chlorite-magnetite and quartz-pyrite altered tuffs.