Mineral Deposit Inventory for Ontario

Ministry of Energy, Northern Development and Mines

Permanent Link to this Record: MDI52J02SE00024

Deposit: MDI52J02SE00024

General

Mineral Deposit Identification
Deposit Name(s) Rainbow Island South - 1979, Mistango M-86-7 - 1986
Related Deposit Type None
Deposit Status occurrence
Date Created 1995-May-29
Date Last Modified 2020-Apr-29
Created By Q Unknown
Revised By T Pettigrew

Commodities

Primary Commodities: gold

Secondary Commodities: silver, copper

Location

Township or Area: Squash Lake Area

Latitude: 50° 1' 47.92"    Longitude: -90° 44' 2.47"

UTM Zone: 15    Easting: 662288   Northing: 5544424    UTM Datum: NAD83

Resident Geologist District: Kenora

NTS Grid: 52J02SE

Point Location Description: Diamond drill holes

Location Method: conversion from mdi

Source Map: OGS 1980 MAP 2420 SQUAW LAKE

Sources Map Scale: 1:25 000

Access Description: Light aircraft can land on the lake close to the drill site in summer and winter. Access to the lake by boats and snowmobiles is possible from access points off Hwy. 599 from Cobb Bay to Trappers Point.

Exploration and Mining History

979: J.R. Nixon drilled 1 DDH totalling 49.7 m. 1982: 1983: Moran Resources Corp. carried out prospecting, mapping, sampling, and a VLF-EM survey. Between 1982 to 1985 C. Kuryliw staked a series of claims surrounding Rainbow Island and the entry to East Bay of Sturgeon Lake. These claims were obtained from Mr. C. Kuryliw in 1985 by Mistango Consolidated Resources. Twenty seven of the claims were covered by grid over the lake and magnetic and VLF-EM surveys were carried out. Due to the lateness of the season, most drilling was carried out from islands or lakeshore. The drill was transported by barge from site to site. 1986: Mistango Consolidated Resources drilled five holes in North Arm of Sturgeon Lake near Rainbow Island, including one DDH totalling 144 m on this showing. The area around King Bay and the southern end of North Arm was intensively explored in 1980 following the discovery by Armstrong and Best of new gold occurrences on King Bay. Steep Rock Mines Ltd. explored the area around the discovery in 1982-1983.

Assessment Work on File

Assessment Work on File
Office File Number   Online Assessment File Identifier   Online Assessment File Directory  
52J02SE N-0014C1     52J02SE9254     Open
52J02SE 0141     52J02SE9260     Open
2.7328     52J02SW8637     Open
2.10183     52J02SE8667     Open
2.12094     52J02SE8657     Open
52J02SE-0059     52J02SE8659     Open

Geology

Province: Superior

Subprovince: Wabigoon

Belt: Sturgeon Lake

Geological Age: Archean   

Mineral Deposit Lithology

Lithology Data
Rock Type Rank Composition Texture Relationship
vein 1 quartz host
mafic metavolcanics 2 host
porphyry 3 feldspar near
intermediate intrusive 4 gabbro near

Mineralization

Deposit Mineralization and Alteration
Rank Mineral Name Class Economic Mineral Type Alteration Mineral Type Alteration Ranking Alteration Intensity Habit Description
1 chalcopyrite economic ore
2 pyrrhotite economic ore
quartz alteration silicification 1 unknown veins
carbonate alteration carbonatization 2 unknown disseminated
calcite alteration calcitization 3 unknown disseminated

Mineralization Comments

02/16/2000 (R Tuomi) - Hole M-86-7 was drilled north at -45 degrees from the shoreline 0.25 mile south of the west end of Rainbow Island to intersect a medium strength VLF-EM conductor. The area is underlain by green to grey metabasalt and gabbro with stringers to bands of feldspar porphyry. At a depth of 45 m the drill intersected a grey quartz vein 0.1 m wide which carried gold, silver and copper associated with chalcopyrite and pyrrhotite. The core assayed 0.06 ounce gold per ton, 0.4 ounce silver per ton and 5 percent chalcopyrite. Mistango DDH M-86-7 returned 0.06 ounce gold per ton over 0.1 m at a depth of 45.1 m (Assessment report 52J02SE9260).

04/29/2020 (T Pettigrew) - Sample 7036 collected by Moran Resources in 1983 assayed 1600 ppb Au (Assessment report 52J02SW8637).

Alteration Comments

02/16/2000 (R Tuomi) - Shearing.

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Ministry Contact Information

For detailed information regarding this mineral deposit please contact the Kenora Resident Geologist District Office