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File Created: 24-Jul-1985 by BC Geological Survey (BCGS)
Last Edit:  30-May-2022 by Karl A. Flower (KAF)

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NMI 092L2 Fe3
Name HILLER 4-5, HILLER, HILLER 11-14, HILLER 3-7 Mining Division Alberni
BCGS Map 092L006
Status Developed Prospect NTS Map 092L02W
Latitude 050º 05' 39'' UTM 09 (NAD 83)
Longitude 126º 51' 54'' Northing 5551284
Easting 652704
Commodities Magnetite, Iron, Sulphur Deposit Types K03 : Fe skarn
Tectonic Belt Insular Terrane Wrangell
Capsule Geology

The Hiller 4-5 occurrence is located in the northeastern headwaters of Kaouk River, approximately 12.5 kilometres north of the community of Zeballos.

Regionally, the area lies within a broad northwest-trending sequence of interbedded sediments and volcanics of the Upper Triassic to Lower Jurassic Parson Bay Formation (Bonanza Group) and Upper Triassic Quatsino Formation (Vancouver Group). This assemblage lies on the northeastern flank of the extensive granodiorite Zeballos intrusion phase of the Jurassic Island Plutonic Suite.

The area lies within a belt of mineralization comprising nine or more similar occurrences that extend from the Zeballos River for approximately 10 kilometres in a north-northwest direction. The mineralization occurs at or near the conformable contact between the Upper Triassic Vancouver Group—comprising Quatsino Formation crystalline limestone and overlying highly altered and folded Parson Bay Formation volcanic and sedimentary rocks—and the Lower Jurassic Bonanza Group.

Locally, at the Hiller 4 and 5 zones, the area is underlain by Lower Jurassic Bonanza Group andesite, andesite tuff and minor interbedded limestone. Diorite and granodiorite of the Early to Middle Jurassic Island Plutonic Suite lie immediately south of the occurrence. Major faults are also evident in the area. Mineralization consists of erratically distributed pods of magnetite-garnet-epidote-actinolite skarn in the Bonanza Group rocks. The zone containing the mineralization is steeply dipping (90 degrees), strikes northwest (315 degrees) and has been traced for 240 metres along strike with a maximum width of 60 to 75 metres and a vertical extent of 150 metres.

Three other zones of magnetite mineralization, referred to (from east to west) as the No. 3, 7 and 6 zones, are located on the southeast side of the valley, approximately 0.5 to 1 kilometre to the southeast of the Hiller 4 and 5 zones. The No. 3 and 7 zones may relate to the Hangingwall zone of the Artlish 3-6 (MINFILE 092L 068) occurrence.

In 1965, diamond drilling yielded intercepts of 54.25 per cent iron and 0.34 per cent sulphur over 24.0 metres in hole H-17; 37.77 and 43.54 per cent iron with 0.70 and 0.57 per cent sulphur over 78.0 and 33.0 metres, respectively, in hole H-18; 36.42 per cent iron with 1.11 per cent sulphur over 42.0 metres in hole H-19; 38.97 and 44.00 per cent iron with 1.11 and 1.25 per cent sulphur over 27.0 and 42.0 metres, respectively, in hole H-20; 48.23 per cent iron with 0.62 per cent sulphur over 21.0 metres in hole H-21; 50.88 per cent iron with 1.32 per cent sulphur over 12.0 metres in hole H-22; 42.19 per cent iron with 1.06 per cent sulphur over 38.1 metres in hole H-23 and 54.44 per cent iron with 0.58 per cent sulphur over 53.4 metres in hole H-24 (Property File - R.N. Saukko [1966-02-10]: Report on Hiller-Churchill Deposit 1965).

In 1966, diamond drilling yielded intercepts of 44.43 per cent iron over 27.0 metres in hole H-26; 42.16 per cent iron over 84.0 metres in hole H-29; 37.36 per cent iron over 24.0 metres in hole H-30; 43.17 per cent iron over 36.0 metres in hole H-31; 39.09 per cent iron over 60.0 metres in hole H-32; 37.04 per cent iron over 93.0 metres in hole H-33; 51.87 per cent iron over 16.5 metres in hole H-35; 45.44 per cent iron over 27.0 metres in hole H-37; 43.97 per cent iron over 75.0 metres in hole H-38; 44.41 per cent iron over 48.0 metres in hole H-41; 41.28 per cent iron over 54.0 metres in hole H-42 and 45.99 per cent iron over 30.0 metres in hole H-44 (Property File - R.N. Saukko (1967-03-15): Report on Hiller-Churchill Properties 1966).

Also, at this time diamond drilling indicated reserves of 3 338 000 tonnes grading 35.9 per cent iron, 0.66 per cent sulphur and less than 0.02 per cent copper from the 3000 to 3400 levels (Property File - R.N. Saukko (1967-03-15): Report on Hiller-Churchill Properties 1966).

Work History

During the early 1960s, Falconbridge Nickel Mines Ltd. completed programs of ground and airborne geophysical surveys and staked the Hiller claims. In 1961 and 1962, 16 drillholes, totalling 330 metres, were completed on the Hiller No. 4 zone. In 1965, a program of further geological mapping, geophysical surveys and diamond drilling, totalling 740.7 metres, was completed on the Hiller No. 4 zone. In 1966, a further program of geological mapping, geophysical surveys and 3 310.5 metres of diamond drilling was completed on the Hiller No. 4 zone.

In 1985, Falconbridge Ltd. completed a program of geological mapping, trenching, ground magnetic surveys and diamond drilling on the Churchill 2 and Hiller 25-26. In 1986, Falconbridge Ltd. completed an airborne geophysical survey on the Hiller and surrounding Zeb claims. In 1988, Footwall Explorations Ltd. completed 900 metres of drilling on the Hiller-Churchill property.

In 2018, R.J. Billingsley completed a program of photo-geological and airborne geophysical interpretation on the area as the Hiller property. Additional work was done in 2020.

EMPR AR 1945-116; 1951-197; 1962-100; 1965-232; 1966-73
EMPR ASS RPT *433, 13665, 14457, 38271, 39455
EMPR BULL *27, p. 131
EMPR EXPL 1985-C230; 1986-C275
EMPR MAP 65 (1989)
EMPR OF 1992-1; 1992-9
EMPR PF (J.J. McDougall (1961-12-21): Report on Hiller Iron Prospects and Bacon Lake Magnetite; J.J. McDougall [1965-01-12]: Report on Hiller Magnetite Properties 1964; Falconbridge Nickel Mines Ltd. (1966): General Location Map of Iron Ore Deposits, Zeballos; R.N. Saukko (1966-02-10): Report on Hiller-Churchill Deposit 1965; Falcon Bridge Nickel Mines Ltd. (1966-05): Zeballos Area Iron Claims Map; unknown [1966-11-01]: Hiller No. 4 - Diamond Drill Sections - Assays and Geologic; R.N. Saukko (1967-03-15): Report on Hiller-Churchill Properties 1966; *R.N. Saukko [1967-05-21]: Report on Addendum to Hiller-Churchill Report 1966; Footwall Explorations Ltd. [1988-05-24]: Prospectus Report on the Hiller-Churchill Group)
GSC EC GEOL 1, 1947
GSC MAP 4-1974; 255A; 1028A; 1552A
GSC MEM 272, p. 68
GSC OF 9; 170; 463
GSC P 38-5; 69-1A; 70-1A; 71-36; 72-44; 74-3; 79-30
GSC SUM RPT 1929 Part A; 1932 Part A, p. 48
GCNL #8(Jan.12),#34(Feb.17),#43(Mar.2), 1989
NW PROSP March/April 1989
Carson, D.J.T. (1968): Metallogenic Study of Vancouver Island with emphasis on the Relationship of Plutonic Rocks to Mineral Deposits, Ph.D. Thesis, Carleton University, Ottawa
Falconbridge File