- SMDI #
- 0654
- Current Showing Name
- Ochak Lake Trenches and Drill Hole PC-6-4
- Historical Showing Names
- Ochak Lake Trenches and Drill Hole PC-6-4
- Company Name
- Project Name
- UTM Easting (NAD83 Z13)
- 561170.6500
- UTM Northing (NAD83 Z13)
- 6565288.2300
- NTS Sheet
- 064M04
- TRM (Township-Range-Meridian)
- 118-12-2
- Primary Commodities
- Silver
- Associated Commodities
- Copper, Gold, Iron, Nickel, Zinc
- Discovery Type
- Outcrop Grab
- Status
- Occurrence: Primary Exploration
- Geological Details
- The occurrence consists of a gossan covered ridge of biotite gneiss approximately 10 ft (3.1 m) high, 50 to 70 ft (15.2 to 21.3 m) wide and 800 ft (243.8 m) long on the south shore of a small round lake 1.2 miles (1.9 km) north of the south end of Ochak Lake. The ridge is bounded on the north by the lake, on the south by a swamp and corresponds to the eastern end of a small east-west trending anomaly on map 1250 G.
The area is underlain by biotite-hornblende-pyroxene-garnet granulites with local bands of biotite hornblende or pyroxene gneiss (mafic volcanic origin) of probable Archean age cut by, and interbanded with, thin pegmatites of younger age.
The showing consists of outcrops of dark grey, schistose, well foliated biotite gneiss commonly banded with rusty partings. Quartzite interlayers and lenses are common especially near the western edge of the ridge near the lake. Foliation trends 080°/40°NW, is locally crenulated and joints are poorly developed.
The surface mineralization consists of minor pyrite and magnetite in places in 1/8 inch thick layers along foliation planes; massive pyrite occurs to the west in the more silicified area near the lake. Mineralization, as intersected in the drill hole, consists of barren pyrite and pyrrhotite accompanied by disseminations, stringers and blebs of magnetite. The sulphide mineralization is concentrated in zones of silicified metasediment and consists of pyrite and pyrrhotite over widths of up to 39 feet (11.9 m). Very fine grained magnetite occurs commonly throughout the area in gneissic metasediments.
Trenches in the area returned samples assaying trace to 1.26 oz./ton Ag, trace to 0.01% Cu, trace to 0.02% Zn and trace Au.
Drill hole PC-6-4 was completed to a depth of 215 ft at the western end of the airborne anomaly that passed through the showing. The hole was spudded approximately 1.5 (2.4 km) miles west of the showing trenches. and two samples taken over 5 ft (1.5 m) intervals from silicified, migmatized, sulphide-mineralized patches of network to massive pyrrhotite in the migmatite), garnet-biotite psammopelite and pelite returned the following values:
INTERSECTION WIDTH PCT PCT PCT OUNCES/TON
(FT) (FT) CU NI ZN AU AG
___________________________________________________
173.6 - 178.6 5.0 0.02 0.01 0.03 0.01 0.10
207.0 - 212.0 5.0 0.01 0.01 0.03 0.10 tr
- Geological Domain
- Mudjatik
- Host Rocks
- Host Minerals
- Magnetite, Pyrite
- Indicators
- Exploration History
- 7/19/1989 The area was first covered by part of the Canadian Propane Consolidated Limited Permit No. 2 in 1969. An airborne radiometric and magnetic survey carried out at this time over the area outlined a large number of anomalies (AF 64M04-0005). Follow up ground checking of these anomalies led to the discovery of the mineralization. Trenches were dug on the most mineralized section and samples returned insignificant assays. No further work was done. The Canadian Propane Consolidated Permit No. 2 was allowed to lapse in 1970.
The airborne EM (AEM-6) anomaly was covered by CBS 2587 by R. Porter in 1970. The claim block was transferred to the Inexco Mining Co. later the same year and work began as part of the Inexco 'Procan Project'. A ground follow up of the airborne EM anomaly was conducted as well as the collecting of geochemical soil and rock samples and geological mapping (AF 64M04-0007). In the same year, Inexco completed further Em and geochemical surveys and drill hole PC-6 on the showing (AF 64M04-0008).
The mineralization was considered minor and the rock and soil geochemical samples proved uninteresting. No further work was recorded.
By 1978, the showing was within MPP 1024 (formerly W. MacNeill and W. Knox Permit No. 1). Demontan Resources completed an airborne EM, magnetic, and radiometric survey which covered the showing (AF 74P08-0005). In the same year a regional lake sediment sample program was completed (AF 74P08-0006).
- Production History
- Reserves and/or Resources