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Ontario Geological Survey
Permanent Link to this Record:
MDI52H08NE00015
| Record Name(s) | Line 60 Lithium - 1980 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Developed Prospect With Reported Reserves or Resources |
| Date Created | 1980-Feb-06 |
| Date Last Modified | 2022-Feb-23 |
| Created By | |
| Revised By |
Primary Commodities: Lithium
Township or Area: Lake Jean Area
Latitude: 49° 26' 33.31" Longitude: -88° 1' 1.6"
UTM Zone: 16 Easting: 426268 Northing: 5477155 UTM Datum: NAD83
Resident Geologist District: Thunder Bay North
NTS Grid: 52H08NE
Point Location Description: Map in 2012 NI 43-101 report
Location Method: Conversion from MDI
Access Description: The Nama Creek property can be accessed by driving 60 km north of the town of Nipigon on Highway 11, then driving approximately 5 km east on a dirt road to reach the eastern boundary of claim 4253781. The Line 60 dyke can be accessed from the Nama Creek property following a dirt road, then a clearing for an old power line to the Postagami River. The river can be crossed with an Argo. Line 60 is located approximately 1.1 km from the river crossing. Line 60 can also be accessed from Gorge Creek Road, which is an all-season road, following a dirt road with an ATV/snowmobile/Argo.
1955: Nama Creek Mines Ltd. conducted line cutting, trenching, sampling, and geological mapping. New Highridge Mining Company Ltd. drilled 22 DDH totalling 3302.5 m. 2010-11: Rock Tech Lithium Inc. drilled 5 DDH totalling 807.7 m and channel sampling (15 channels on the Line 60 dyke).
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 2.49022 | 20000008079 | 20000008079 |
| 12 | 52H08NE0005 | 52H08NE0005 |
Province: Superior
Subprovince: Quetico
Geological Age: Archean
| Rock Type | Rank | Composition | Texture | Relationship | Pegmatite | 1 | Host |
|---|---|---|---|---|
| Terrigenous-Clastic-Unsubdivided | 2 | Adjacent |
Apr 20, 2016 (Therese Pettigrew) - The Line 60 deposit is exposed about 1,600 feet east of the Harricana pegmatite, northeast of Downey Lake. It strikes about N15E. At its south end, the dip is vertical to steeply west. The dip decreases to the north, however, and near the north end of the dyke it is 50-70W. The width attains a maximum of about 70 feet in DDH No. 28 and from here it decreases more or less gradually outward, to about 10 feet at the north end of the dyke, and about 25 feet at the south end (Pye, 1965). Three pegmatite zones were identified in Line 60 pegmatite dyke: a) border zone, b) spodumene zone and c) aplite layers. The metasedimentary rocks which hosts the dykes is typically composed of quartz, feldspar, and biotite. Its texture is fine grained and occasionally exhibits a porphyroblastic texture (biotite porphyroblasts). The colour ranges from light to dark gray and is generally a medium gray in colour. The metasediment is massive to schistose, with massive to weakly foliated rock being the most common. Only a few of the metasedimentary host rock contacts with the pegmatite show alteration. The alteration is characterized by characterized by large biotite grains and some yellow-green muscovite. Where metasomatism is present, the contact between the pegmatite and the metasediment is much more gradual. The main and splinter dykes do not show any zoning as a whole. There is slight, localized zoning, found along the contacts of the dyke—white chill margins (i.e., border zone) up to 0.5 cm thick or medium to coarse-grained pegmatite up to 3 cm thick. Rarely, zoning can be seen in the internal structure of individual pegmatite bands—in channel L60-11-C03, there are multiple pegmatite bands with an aplite core (5 to 10 cm thick) with coarse-grained crystals growing out from the center. The contact with the host rock tends to be sharp with a slightly irregular boundary. The spodumene zone and alternating aplite and spodumene pegmatite layers extends throughout almost the entire width of the pegmatite dyke. The aplite bands are 3 to 80 cm thick and the spodumene bands are 5 to 60 cm thick in drill core. The aplite can be massive, form its own distinct banding, and/or serve as a groundmass for phenocrysts of feldspar, spodumene, and quartz. Massive aplite is numerous shades of gray, white, or rarely, shades of a green-gold-brown colour. White aplite usually forms bands with gray or the rarer green-gold-brown aplite. White aplite tends to be fine grained. It contains white feldspar, pale gray quartz, and silvery white to extremely pale yellow muscovite. Additionally, it may contain trace black Nb-Ta oxides and rarely, phenocrysts of translucent gray quartz. Gray aplite is slightly coarser grained than white aplite and contains cream to dark gray feldspar, pale gray to brown quartz, and silvery to yellow muscovite. Additionally, it may contain white to very pale green spodumene (local areas can be up to 30% fresh spodumene, with crystals up to 1 cm long that are oriented randomly), trace black Nb-Ta oxides, trace blue-green apatite, trace red garnet, phenocrysts of spodumene (up to 5 cm long) and creamy white feldspar (up to 6 cm long). Green-gold-brown aplite contains cream feldspar, white to brown quartz, and silvery to yellow-green muscovite. Additionally, it may contain trace Nb-Ta oxides, trace orange to brick-red garnets, trace blue to blue-green apatite, and creamy white to pale pink phenocrysts of feldspar (Selway et al., 2012).
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Spodumene | Economic | Ore | ||||
| 1 | Feldspar | Economic | Gangue | ||||
| 2 | Quartz | Economic | Gangue | ||||
| 3 | Muscovite | Economic | Gangue | ||||
| 4 | Garnet | Economic | Gangue | ||||
| 5 | Apatite | Economic | Gangue |
Apr 20, 2016 (Therese Pettigrew) - The best assays for Line 60 channels are: L60-11-C09 with 20.96 m at 1.37% Li2O, L60-11-C08 with 19.51 m at 1.45% Li2O and L60-11-C06 with 14.08 m at 1.45% Li2O. The best assays from the fall 2011 Line 60 drill program are: L60-11-03 with 8.33 m at 1.09% Li2O and L60-11-04 with 7.00 m at 1.12% Li2O. The best drillhole intersections included L60-11-03 for 8.33 m at 1.09% Li2O and L60-11-04 with 7.0 m at 1.12% Li2O (Selway et al., 2012).
| Rank | Classification |
|---|---|
| 1 | Pegmatite |
| Rank | Characteristic |
|---|---|
| 1 | Intrusive |
| Zone | Year | Category | Tonnes | Reference | Comments | Commodities |
|---|---|---|---|---|---|---|
| Line 60 | 2012 | Inferred Mineral Resource | 1300000 | Selway et al., 2012 NI 43-101 report | Lithium 0.93 Percent |
MonoMap - Geology and lithium deposits of Georgia Lake area, District of Thunder Bay
Publication Number: R031 Page: 79-80 Date: 1997
Author: Pye E.G.
Publisher Name: Ontario Dept. of Mines
Location:
Map - Georgia Lake area, Thunder Bay District
Publication Number: M2056 Scale: 1:63,360 Date: 1997
Author: Pye E.G.
Publisher Name: Ontario Dept. of Mines
Location:
Publication - Independent Technical Report and Updated Resource for Nama Creek Main Zone North Pegmatite, Georgia Lake Lithium Property, Beardmore, Ontario, Canada
Publication Number: 2012 NI 43-101 Date: 2012
Author: Selway, J., Baker, J., Magyarosi, Z., Dixon, A., Sanders, R.
Publisher Name: CCIC for Rock Tech Lithium Inc.
Location: SEDAR
Folio - Pijitawabik Bay area (Kilkenny Township), District of Thunder Bay
Publication Number: GDIF188 Date: 1997
Author: Thunder Bay RGO
Publisher Name: Ontario Geological Survey
Location:
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For detailed information regarding this mineral record please contact the Thunder Bay North Resident Geologist District Office