Ministry of Energy, Northern Development and Mines
Permanent Link to this Record: MDI000000002148| Deposit Name(s) | Porphyry Ridge Cu-zn - 2007 |
|---|---|
| Deposit Status | discretionary occurrence |
| Date Created | 2017-Dec-20 |
| Date Last Modified | 2020-Jul-15 |
| Created By | C Ravnaas |
| Revised By | T Pettigrew |
Primary Commodities: zinc, copper
Township or Area: Bliss Lake Area
Latitude: 48° 42' 49.8" Longitude: -92° 46' 49.88"
UTM Zone: 15 Easting: 516145 Northing: 5395668 UTM Datum: NAD83
Resident Geologist District: Kenora
NTS Grid: 52C10NW
Point Location Description: Precise, grab sample
Location Method: based on assessment
2007: Numax Resources Inc. carried out stripping and sampling. 2008: Numax carried out prospecting.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 2.35787 | 20000002668 | Open |
| 2.44177 | 20000004560 | Open |
Province: Superior
Subprovince: Wabigoon
Belt: Fort Frances-mine Centre
Geological Age: Archean
12/20/2017 (C Ravnaas) - The general rock types found in the Mine Center area and on the Cat-Key property consists of bi-modal mafic to felsic volcanic rocks, dominantly massive and minor pyroclastic flows, with lesser units of interbedded tuff, lapilli tuff and chemical and sedimentary rocks. These rocks have been intruded by ultramafic, mafic, intermediate and felsic intrusive rocks. The East-West and northeast striking Mine Center Meta-Volcanic Belt is bonded to the north by the East-West Quetico Fault, located at its northern margin of the metavolcanic belt. Along its southern margin, it is bounded the east-northeast striking Seine Bay-Rainy River Fault Zone. These two major orogenic events and possibly other subsequent events have played an important role in the preparing rock features for localizing gold mineralization within lithologically controlled sheared, carbonitized and silicified in rocks within the Mine Center area from page 37 of NuVision Resources 2016 DDH report AFRO 2.57161 and KAF 52C10NE PPP4.
| Rock Type | Rank | Composition | Texture | Relationship |
|---|---|---|---|---|
| felsic metavolcanics | 1 | |||
| mafic metavolcanics | 2 |
12/20/2017 (C Ravnaas) - Altered and sheared contacts between lithological units in the Mine Centre area appear to host known old mineralization, especially within the felsic volcaniclastic units, such as interbedded tuff, lapilli tuff and flow top breccia’s within the mafic unit such as that found at the Thompson gold occurrence. These lithologically contrasting units are generally less resistant to deformation and are generally more susceptible to shearing and alteration. Such lithology, when subjected to shearing, provides favourable passage ways for mineralizing hydrothermal gold bearing fluids, which was emplaced after the stratabound copper-zinc base metal mineralization from page 6 of NuVision Resources 2016 DDH report AFRO 2.57161 and KAF 52C10NE PPP4.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Habit Description |
|---|---|---|---|---|---|---|---|
| 1 | sphalerite | economic | ore | ||||
| 2 | chalcopyrite | economic | ore | ||||
| 3 | pyrrhotite | economic | ore |
12/20/2017 (C Ravnaas) - Occurrence from grab - 780ppm Cu and 1050 ppm Zn
07/15/2020 (T Pettigrew) - The 2007 stripping program uncovered four parallel sulphide zones with sphalerite, chalcopyrite and pyrrhotite interbedded with mafic and felsic metavolcanics. Sample 123904 returned 422 ppm Cu and 4872 ppm Zn. Sample 123908 returned 618 ppm Cu. Sample 123901 returned 269 ppm Cu and 4207 ppm Zn (Assessment report 20000002668).
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