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File Created: 24-Jul-1985 by BC Geological Survey (BCGS)
Last Edit:  20-Sep-1990 by Garry J. Payie (GJP)

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NMI 092B13 Fe1
Name LADY A (C ZONE), LADY C Mining Division Victoria
BCGS Map 092B091
Status Developed Prospect NTS Map 092B13W
Latitude 048º 55' 15'' UTM 10 (NAD 83)
Longitude 123º 56' 48'' Northing 5419087
Easting 430649
Commodities Iron, Magnetite Deposit Types G01 : Algoma-type iron-formation
Tectonic Belt Insular Terrane Wrangell
Capsule Geology

The Lady A (C zone) deposit is underlain by cherty sediments of the Upper Devonian McLaughlin Ridge Formation, Sicker Group. Locally the sediments strike northwest and dip to the northeast at 50 to 60 degrees. Intruding the strata are dykes and sills of gabbro and diabase (informally called the Mount Hall Gabbro) that are coeval with the Upper Triassic Karmutsen Formation, Vancouver Group.

The deposit is a stratabound taconite lens composed of grey chert and red jasper hosting bands of very fine-grained magnetite with minor hematite. The deposit outcrops along strike for a distance of 42 metres, having an apparent thickness of 12 metres. Drilling has revealed a downdip extent of at least 48 metres. A "conservative" estimate of reserves based on four drill holes put down in 1953 was reported to be 2.15 million tonnes grading 18 per cent iron (Buckham, 1953).

EMPR AR *1956-135
EMPR ASS RPT *12525, *15136, *15881
EMPR FIELDWORK 1987, pp. 81-91
EMPR OF 1988-8; *1988-28, p. 129
EMPR PF (*Report on Exploration for Iron Ore (with drill logs), Ladysmith Devolopment Ltd., A.F. Buckham, December 1953 (in Lady A file - 092B 029); Location map and plans of the deposits, 1953 (in Lady A File); Laanela, H. (1988): Report on the Lady-Ermelina Claim Group for Carlsbad Ventures Inc.)
GSC MAP 42A; 1386A; 1553A
GSC MEM 13; 36; 96
GSC OF 463
GSC P 72-44; 75-1A, p. 23; 79-30
Carson, D.J.T. (1968): Metallogenic Study of Vancouver Island with Emphasis on the Relationship of Plutonic Rocks and Mineral Deposits, Ph.D. Thesis, Carleton University