Ontario Geological Survey
Permanent Link to this Record:
MDI52H08NE00009
| Record Name(s) | Conway - 1984, United Montauban - 1984, Conway Dyke - 1957 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Developed Prospect With Reported Reserves or Resources |
| Date Created | 1984-Jul-23 |
| Date Last Modified | 2022-Jul-04 |
| Created By | |
| Revised By |
Primary Commodities: Lithium
Secondary Commodities: Beryl, Tin, Niobium
Township or Area: Lake Jean Area
Latitude: 49° 27' 10.01" Longitude: -88° 0' 4.44"
UTM Zone: 16 Easting: 427434 Northing: 5478273 UTM Datum: NAD83
Resident Geologist District: Thunder Bay North
NTS Grid: 42E05NW, 52H08NE
Point Location Description: From Selway et al., 2012 (NI 43-101 report)
Location Method: Conversion from MDI
Access Description: The Nama Creek and Conway properties can be accessed by driving 60 km north of the town of Nipigon on Highway 11, then driving approx. 5 km east on a dirt road to reach the eastern boundary of the property. The Conway dyke is located approx. 0.5 km from the Postagami River crossing. It can also be accessed through Gorge Creek Road, following dirt roads.
1958: Leitch Gold Mines - 15 DDH totalling 944.8 m. 2009: James Bay Midarctic Developments Inc. - Prospecting and sampling, 2 DDH totalling 127 m. 2010: Rock Tech Lithium Inc. conducted a GPS survey on the property, identifying historic drillhole collars and outcrops. 2011: Rock Tech Lithium - 13 DDH totalling 2,185.3 m, channel sampling. 2021-22: Rock Tech drilled 35 DDH totalling 5,943 m.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 15 | 52H08NE0003 | 52H08NE0003 |
| 13 | 42E05NW0008 | 42E05NW0008 |
| 2.44004 | 20000005862 | 20000005862 |
| 2.49022 | 20000008079 | 20000008079 |
Province: Superior
Subprovince: Quetico
Geological Age: Precambrian
Metamorphism Grade: U. GS-Amphib
| Rock Type | Rank | Composition | Texture | Relationship | Pegmatite | 1 | Rare-Element, Spodumene, Beryl, Muscovite | Is |
|---|---|---|---|---|
| Gneiss-Unsubdivided | 1 | Biotite, Qtz, Feldspar Schist | Gniess | Host |
| Diabase | 1 | Diabase | Sheet | Intrudes |
| Granite | 2 | Intrudes | ||
| Pegmatite | 2 | Potassic | Porphyritic | Is |
Mar 20, 2015 (Therese Pettigrew) - The Postagoni Lake – Downey Lake – Lake Jean pegmatites(of which the Conway dyke is a member) are characterized by porphyritic texture consisting of large crystals of K-feldspar and spodumene in a finer-grained matrix. The K-feldspar and spodumene tend to be oriented perpendicular to the pegmatite dyke walls. The albite occurs commonly in aplite bands or layers and rarely as irregular patchy aplite. The Camp, Conway and McVittie pegmatites have internal zoning with spodumene-rich zone enclosed by a muscovite-rich, spodumene-poor zone. Quartz veins and quartz-muscovite veins are common. Beryl, tourmaline and columbite are rare. The Conway pegmatite dykes are hosted by metasediments (Selway et al., 2012).
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Beryl | Economic | Ore | ||||
| 2 | Spodumene | Economic | Ore | ||||
| 3 | Microcline | Economic | Gangue | ||||
| 4 | Albite | Economic | Gangue | ||||
| 5 | Quartz | Economic | Gangue | ||||
| 6 | Muscovite | Economic | Gangue | ||||
| 7 | Columbite | Economic | Gangue | ||||
| 8 | Cassiterite | Economic | Gangue |
Jan 20, 2014 (Syed Ali) - Assay: Drill Hole CW-11-03 - 10.90 m grading 1.22% Li2O, 8.0 m grading 1.41% Li2O. Hole CW-11-08 - 11.65 m grading 0.67% Li2O. Hole CW-11-09 - 11.25 m grading 0.84% Li2O.
Mar 20, 2015 (Therese Pettigrew) - The Conway pegmatite dyke is exposed south of No. 1 dyke and about 1,500 ft (=457.2 m) east of Little Postagoni River. The Conway pegmatite dyke is similar to the No. 1 in texture and internal structure. Three pegmatite zones were identified in the dyke: a) border zone, b) spodumene zone and c) aplite layers. The border zone is either a fine-grained pegmatite or an aplite/pegmatite mixture about 2-30 cm thick. The contact with the metasedimentary host rock is sharp and slightly irregular. Both the fine-grained pegmatite and the pegmatite/aplite mixture are composed of white feldspar, gray quartz, and pale yellow-green muscovite. Trace amounts of fine-grained pyrite, blue-green apatite, and pink garnet also occur in the border zone. The spodumene zone and alternating aplite and spodumene bands comprise almost the entire pegmatite dyke. The aplite bands are typically 10 to 20 cm thick with the thickest band about 70 cm thick. The spodumene bands are typically 20 to 70 cm thick with the thickest band about 1.1 m. Thinner pegmatites are not as prone to have aplite bands. The aplite bands have a composition of gray quartz, white feldspar, and yellow-green muscovite. A few aplite bands also contain pale green spodumene. The aplite bands also contain trace amounts of fine-grained green apatite and red-orange garnet. The spodumene bands are coarse to very coarse grained and have a composition of gray quartz, white to pale pink feldspar (some with a perthitic texture and a few crystals of cleavelandite), silver white to yellow-green muscovite, and spodumene. Spodumene ranges in colour from silver white to gray to very pale green and pale green to altered yellow to dark green/black. Some of the spodumene is altered to a red brown with a black rim. Spodumene crystals are mostly oriented subperpendicular to the aplite bands and subparallel to each other. In about a third of the core, the orientation appears to be random. The feldspar tends to be albite > K-feldspar. The spodumene zone also contains trace amounts of fine-grained blue-green apatite, pyrite, and pink-brown garnet (Selway et al., 2012). Highlights for the Leitch Gold Mines Ltd. 1958 drill program on the Conway Dyke include the following assays: CON-08: 1.7% Li2O from 40.4-43.4m; CON-15: 1.54% Li2O from 57.9-60.3 m; CON-10: 1.37% Li2O from 40.4-43.4 m; CON-11: 1.35% Li2O from 38.1-41.1 m, CON-12: 1.32% Li2O from 14.6-16.0 m. Highlights for the James Bay Mid Arctic Developments Inc. 2009 drill program on the Conway Dyke includes the following assays: CON-09-01: 1.69% Li2O from 35.5-37 m, 1.59% Li2O from 37-38.5 m, and 1.94% Li2O from 40-41.5 m; CON-09-02: 1.87% Li2O from 45-46m, 1.85% Li2O from 49-50m, and 2.02% Li2O from 47.5-49 m (Selway et al., 2012). The Conway deposit hosts one main pegmatite dike with spodumene mineralization striking at 210 degrees for 800 m and dips 70 degrees to the northwest. The 2021 – 2022 drilling at Conway extended spodumene mineralization for 100 m along strike to the south, to the 75 m level. Drilling highlights include DDH CON-22-04 returning 1.36% Li2O over 7.0 m (true width) starting at 96.3 m, and DDH CON-22-23 returning 1.16% Li2O over 8.2 m (true width) starting at 47.0 m (Rock Tech news release June 30, 2022).
| Rank | Classification |
|---|---|
| 1 | Pegmatite |
| Rank | Characteristic |
|---|---|
| 1 | Intrusive |
| Shape | Length | Thickness | Depth | Strike | Dip | Plunge | Trend | Age | Reference |
|---|---|---|---|---|---|---|---|---|---|
| Irregular | .3 |
| Shape | Length | Thickness | Depth | Strike | Dip | Plunge | Trend | Age | Reference |
|---|---|---|---|---|---|---|---|---|---|
| Irregular | 700 | 10 | 215 | 30 | 70 | Selway et al., 2012, p. 254 |
| Shape | Length | Thickness | Depth | Strike | Dip | Plunge | Trend | Age | Reference |
|---|---|---|---|---|---|---|---|---|---|
| Unknown | .8 |
| Zone | Year | Category | Tonnes | Reference | Comments | Commodities |
|---|---|---|---|---|---|---|
| Conway | 2012 | Indicated Mineral Resource | 720000 | Selway et al, 2012 (NI 43-101 technical report) | Lithium 1.05 Percent | |
| Conway | 2012 | Inferred Mineral Resource | 590000 | Selway et al, 2012 (NI 43-101 technical report) | Lithium 1.02 Percent | |
| Conway | 2011 | Inferred Mineral Resource | 441900 | 43-101 rocktech lithium, Nov 02, 2011 | Inferred Resource: 1.05% Li2O | |
| Conway | 2011 | Indicated Mineral Resource | 704100 | 43-101 rocktech lithium, Nov 02, 2011 | 1.11% LI2O | |
| Conway | 1956 | Unclassified | 1830000 | Selway et al. 2012 | 0.96% Li2O; Historic, not NI 43-101 compliant | Lithium 0.96 Percent |
Publication - Independent Technical Report and Updated Resource for Nama Creek Main Zone North Pegmatite, Georgia Lake Lithium Property, Beardmore, Ontario, Canada
Publication Number: 2012 43-101 Date: 2012
Author: Selway, J., Baker, J., Magyarosi, Z., Dixon, A., Sanders, R.
Publisher Name: CCIC for Rocktech Lithium Inc.
Location: SEDAR
MonoMap - Geology and lithium deposits of Georgia Lake area, District of Thunder Bay
Publication Number: R031 Page: 67-69 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:
Map - Red Rock-Pine Portage sheet, District of Thunder Bay, geological compilation series
Publication Number: P0357 Scale: 1:126,720 Date: 1997
Author: Pye E.G.
Publisher Name: Ontario Dept. of Mines
Location:
Map - Geological series, Precambrian geology of the Wabigoon-Quetico subprovince boundary, Orient Bay sheet, Thunder Bay District
Publication Number: P2530 Scale: 1:50,000 Date: 1982
Author: Sutcliffe R.H.
Publisher Name: Ontario Geological Survey
Location:
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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