Ontario Geological Survey
Permanent Link to this Record:
MDI52C11NE00030
| Record Name(s) | Belacoma Trax - 9999 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 2011-Mar-02 |
| Date Last Modified | 2022-May-10 |
| Created By | |
| Revised By |
Primary Commodities: Copper, Platinum, Palladium
Township or Area: Halkirk
Latitude: 48° 42' 51.57" Longitude: -93° 2' 15.03"
UTM Zone: 15 Easting: 497241.003 Northing: 5395700.005 UTM Datum: NAD83
Resident Geologist District: Kenora
NTS Grid: 52C11NE
Point Location Description: Taken from geology map with occurrences AFRO 2.32111
Location Method: Conversion from MDI
Access Description: The property is access from Highway 11 east of Fort Frances - there is a series of logging roads and railway beds provide access to the internal parts of the Grassy Portage intrusive rocks.
There is a long history of base metals exploration within the North Rock area, with the earliest recorded work occurring in 1918, with possible, unrecorded work as early as 1902. Research suggests that there has been little exploration for the platinum group elements (PGE's) and only minor interest in Au. Most of the exploration activity occurred between 1958 and 1978 and was sporadic before or since.2001, 2003 to 2006 as presented in MetalCORP, Kenora assessment file 52C11NE BBB-8 AFRO 2.37249 Two prospecting programs were completed during 2003 and 2004. The property was optioned to MetalCORP Ltd (MTC) during October 2004. During 2005 and 2006 MTC completed an AeroTEM IT helicopter-borne survey, Phase 1 and II diamond drill programs, linecutting, detailed prospecting, and geological mapping.
Province: Superior
Geological Age: Precambrian
Mar 02, 2011 (C Ravnaas) - The North Rock Property is primarily underlain by the differentiated Grassy Portage Intrusion (GPI) with lesser amounts of the Grassy Portage ultramafic pyroclastic sequence (GUP); clastic metasedimentary rocks of the Couchiching Metasediments; granitoid rocks of the Bear Passage and Blind Bay plutons; sections of2 formational, composite, chemical/clastic metasedimtmtary sequences; two narrow mafic metavolcanic units; and a few, possibly subvolcanic gabbro sills. All observed rocks-types comprise the southern limb of a large-scale open, antiformal fold cored by the Rice Bay Dome located approximately 1.50 km north of the property (Figure 3). Most rock-types have been regionally metamorphosed to lower amphibolite-grade. The southwestern two-thirds of the Grassy Portage Intrusion underlies the core of the property (~75%). This large, sill-like, mafic complex intrudes all observed supracrustal rock-types, and is composed ofa well-differentiated, locally layered, cumulate sequence of medium- to coarse-grained, melagabbro, gabbro and leucogabbro; coarsely plagiophyric to glomero-plagiophyric gabbro to leucogabbro; localized intervals ofmedium- to coarse-grained anOlthosite; and a discontinuous, noncumulate, ophitic-textured, melagabbroic border phase that is present along both the upper and lower contacts ofthe complex. The intrusion is structurally overturned and stratigraphically south-facing. Cha1copyrite-dominated mineralization concentrates along both upper and lower contacts with the greatest sulphide abundances observed near the basal or northern contact. Reference MetalCORP, Kenora assessment file 52C11NE BBB-8 AFRO 2.37249
Mar 02, 2011 (C Ravnaas) - Most of the presently defined, surface mineralized zones are aligned roughly subparallel to the basal contact of the Grassy Portage Intrusion, are elongate in outline with diffuse margins, and contain highly variable amounts of sulphides with highly variable, but internally consistent, base and precious metals grades associated with a confined range of rock-types. The 2005 prospecting program discovered at least 28 new occurrences and diffuse zones and numerous low-grade showings (not described) from the 489 grab samples Reference MetalCORP, Kenora assessment file 52C11NE BBB-3 AFRO 2.32111 Reference MetalCORP, Kenora assessment file 52C11NE BBB-3 AFRO 2.32111
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 5 | Chalcopyrite | Economic | Ore | ||||
| 10 | Pyrrhotite | Economic | Ore |
Mar 02, 2011 (C Ravnaas) - Several mineral showings are located along the railway beds exposures and north of tracks. Belacoma Trax 1,2, and 3 Zones: These 3 closely spaced occurrences/zones and associated mineralization, are located adjacent to the CNR tracks between 50 and 300 m west of where the tracks are crossed by Highway 11. The staff of the Kenora District Geologist's Office (OGS) describe the rocks as moderately to strongly fractured (310/80), weakly to moderately silicified, fine-grained gabbro containing 2 to 10% disseminated and stringered chalcopyrite with subordinate pyrrhotite and pyrite. This rock is probably the ophiticto subophitic-textured melagabbro that has been recognized by the author and others (Poulsen, personal communication 2005) as comprising a non-cumulate border phase of the Grassy Portage Intrusion. OGS analyses taken in October 2002 obtained 12992 ppm Cu from Zone 1; 8992 ppm Cu from Zone 2; and 4387 ppm Cu from Zone 3. MTC 2005 sampling obtained 9890 ppm Cu, 3.2 ppm Ag, and 0.143 ppm Pt; 7500 ppm Cu, 3.3 ppm Ag, and 0.112 ppm Pt; and 5440 ppm Cu, 1779ppm Ni, and 2.3ppmAg from Zones 1,2, and 3, respectively. The CN-I0ccurrence an newly discovered occurrence is located 215 m south of the Belacoma Trax 3 Occurrence and consists of I to 2% disseminated chalcopyrite and pyrrhotite within fme-grained ophitic melagabbro (micromelagabbro) of the basal border phase of the Grassy Portage Intrusion. MTC took 4 samples during 2005 that contained up to 8650 ppm Cu, 659 ppm Ni, 2.6ppm Ag, 0.146 ppm Au, and 0.135 Pd. Reference MetalCORP, Kenora assessment file 52C11NE BBB-3 AFRO 2.32111
Mono - Copper, nickel, lead and zinc deposits of Ontario
Publication Number: MDC012 Page: 218 Date: 1969
Author: Shklanka R.
Publisher Name: Ontario Dept. of Mines
Location:
MonoMap - Geology of the Rainy Lake area, District of Rainy River
Publication Number: R115 Page: 51-52 Date: 1974
Author: Harris F.R.
Publisher Name: Ontario Division of Mines
Location:
Mono - The geological setting of mineralization in the Mine Centre-Fort Frances area, District of Rainy River
Publication Number: OFR5512 Page: No. 19 Date: 1984
Author: Poulsen K.H.
Publisher Name: Ontario Geological Survey
Location:
File - Mineral Deposit Files Kenora
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