Ontario Geological Survey
Permanent Link to this Record: MDI000000000331
|Record Name(s)||Anomaly T - 2000|
|Related Record Type|
|Date Last Modified||2022-Jun-08|
Primary Commodities: Gold
Township or Area: Duffell Lake Area
Latitude: 51° 12' 44.63" Longitude: -90° 49' 53.67"
UTM Zone: 15 Easting: 651453.998 Northing: 5675678.998 UTM Datum: NAD83
Resident Geologist District: Thunder Bay North
NTS Grid: 52O02NW
Point Location Description: ddh database location for ddh 00-15.
Location Method: Data Compilation
1988-2001: Prospecting, trenching, geological and geophysical surveys and diamond drilling by E.W. Bazinet, Milner Consolidated Silver Mines and Iron Lake Minerals.
|Office File Number||Online Assessment File Identifier||Online Assessment File Directory|
Terrane: North Caribou
Geological Age: Neoarchean
|Rock Type||Rank||Composition||Texture||Relationship||Amphibolite||1||Banded Amphibolite||Contains|
|Chert||2||Possibly Lean Iron Formation||Near|
|Rank||Mineral Name||Class||Economic Mineral Type||Alteration Mineral Type||Alteration Ranking||Alteration Intensity||Alteration Style|
Jun 21, 2007 (Mark Puumala) - Bazinet (1995) reported assays of up to 0.04 oz/ton Au in samples collected from a series of trenches excavated at this location over a strike-length of approximately 200 m along an approximately east-west-striking magnetic anomaly (Anomaly T). The material exposed during this trenching was reported by Bazinet (1995) to consist of sheared rock consisting of bands of chert and amphibole (iron formation?). This rock was generally reported to be highly-weathered, with abundant limonite staining. In trenches where sulphide mineralization was observed, Bazinet (1995) indicates the presence of disseminated to massive arsenopyrite. Diamond drilling at this location by Iron Lake Minerals (ddh 00-15) is reported by Bazinet (2000) to have intersected a series of amphibolitized tuffs and possible exhalative sediments (chert) intruded by a feldspar porphyry dike. Anomalous gold assays (up to 0.498 g/ton Au over 1.14 m) were reported from sections that encountered mineralization consisting of disseminated pyrrhotite with minor arsenopyrite. Lower gold assays were reported to have been obtained from sections that were only mineralized with pyrrhotite. This occurrence is located approximately 3 km east-southeast of the Anomaly A prospect, and may represent an extension of the same mineralized horizon.
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For detailed information regarding this mineral record please contact the Thunder Bay North Resident Geologist District Office