Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI000000000409

Record: MDI000000000409

General

Commodities

Primary Commodities: Copper

Location

Township or Area: Setting Net Lake Area

Latitude: 52° 46' 39.85"    Longitude: -93° 34' 22.73"

UTM Zone: 15    Easting: 461350   Northing: 5847700    UTM Datum: NAD83

Resident Geologist District: Red Lake

NTS Grid: 53C13SE

Point Location Description: Approximate location from assessment file maps.

Location Method: Data Compilation

Exploration History

1928: Stripping and trenching by L.G. Springer. 1956-57: Geological mapping, geophysical surveys and diamond drilling by Newconex. 1987-88: Prospecting, geological mapping and geophysical surveys by Geotest.

Assessment Work on File

Geology

Province: Superior

Subprovince: Sachigo

Terrane: North Caribou

Belt: Favourable Lake

Geological Age: Archean  

Lithology

Mineralization

Mineralization Comments

Mar 20, 2008 (Mark Puumala) - The Springer East occurrence is described by Atkinson et al. (1990) as an east-trending sulphide-rich unit of interflow sediments hosted within massive and pillowed metavolcanic flows. A medium to coarse-grained gabbro occurs to the west of the occurence. Atkinson et al. (1990) describe the mineralized metasedimentary horizon as gossan-stained, sulphide-bearing, sericitic chert or felsic tuff interlayered with black argillite. Mineralization consists of disseminated, layered and semimassive pyrrhotite with accessory pyrite and minor chalcopyrite. Foliation in the area of the showing is reported to be oriented 316/80. Parker (1999) suggested that this showing is of the volcanogenic massive sulphide type. Senet Copper Mines reported advancing four diamond drill holes (S-14, 16, 18 and 32) on this occurrence in 1957 (AFRI# 53C13SE0027). Disseminated to near-massive (up to 50%) sulphides were reported in horizons logged as rhyolite, greywacke and argillite. Copper values of greater than 0.1% were reported to occur over relatively wide intersections in three of these drill holes. Notable intersections included 0.17% Cu over 15 m in ddh S-14, 0.16% Cu over two 7.5 m sections in ddh S-32 and 0.11% Cu over 4.57 m in ddh S-18. A grab sample assay of 2140 ppm Cu was reported from the surface expression of this showing by Cruickshank (1988) while Atkinson et al. (1990) reported low copper assays (<400 ppm) from two grab samples. Senet Copper also reported an assay of 0.13% Cu at a location approximately 800 m east of the Springer occurrence (AFRI# 53C13SE0026). This assay was obtained from material logged as rhyolite containing scattered pyrite mineralization. Atkinson et al. (1990) report additional occurrences of similar mineralization at locations approximately 500 m west (Springer West) and 1 km north (Springer North) of the Springer East occurrence. However, no occurrence-grade assays were reported from these locations.

Mineral Record Details

References

Article - Red Lake Resident Geologist's District - 1990

Publication Number: MP152.003 Page: 31-66  Date: 1997

Author: Atkinson B.T., Parker J.R., Storey C.C.

Publisher Name: Ontario Geological Survey

Location:

Article - Regional metallogeny of the northwestern Superior Province, Ontario: volcanogenic massive sulphide (VMS) mineralization

Publication Number: MP169.022 Page: 143-155  Date: 1998

Author: Parker J.R.

Publisher Name: Ontario Geological Survey

Location:

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For detailed information regarding this mineral record please contact the Red Lake Resident Geologist District Office