Ontario Geological Survey
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MDI42E10NW00054
| Record Name(s) | Oklend Occurrence (Main Narrows) - 1934 |
|---|---|
| Related Record Type | Partial |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1997-Jan-14 |
| Date Last Modified | 2022-Jan-28 |
| Created By | |
| Revised By |
Primary Commodities: Gold
Township or Area: Ashmore
Latitude: 49° 41' 25.45" Longitude: -86° 52' 52.35"
UTM Zone: 16 Easting: 508568 Northing: 5504216 UTM Datum: NAD83
Resident Geologist District: Thunder Bay North
NTS Grid: 42E10NW
Point Location Description: Diamond drill holes on OGS map M1951-02
Location Method: Data Compilation
Access Description: The property is located in south central Ashmore Township, near the narrows of Little Longlac. The property is easily accessible by Trans-Canada Highway 11, which passes through the northern claim approximately 5.0 km east of the turnoff to Geraldton (Highway 584).
1931: Claims TB10018 and TB10021 were staked by S.B. Watson on behalf of T. Rea and Mrs. E. Watson, respectively. The claims were subsequently transferred to A.B. Gordon and W.H. Connell. 1932: The claims were optioned and 30 assessment days were credited to each claim. The option was later dropped. There is no record of who performed the work. 1933: A total of 100 assessment days was credited to each claim. 1934: Oklend Gold Mines Ltd. was incorporated to undertake development of the claims. The claims were transferred to Oklend gold Mines Ltd. and were surveyed. Geological and dip needle surveys were conducted. 1935-36: A 59 hole, 10,956.7 m diamond drilling project was conducted. Fourteen of the holes tested the fault structure near the narrows of Little Longlac. 1937: The claims were patented. 1938: Six holes totalling 1,265.2 m were drilled elsewhere on the claim block. 1946-47: A joint exploration program was carried out by Oklend Gold Mines Limited and Little Longlac Gold Mines Limited along their mutual boundary. 1966: The property was sold to Little Longlac Gold Mines Limited. 1986: The property was held by Little Longlac Gold Mines Limited. No assessment reports were found on file as the property is patented.
Province: Superior
Subprovince: Wabigoon
Belt: Beardmore-Geraldton
Geological Age: Archean
Dec 07, 2005 (B Nelson) - The area is underlain by Early Precambrian metavolcanics and metasediments. Basal conglomerate has been found along only the volcanics-sediments contact in the vicinity of the Main Narrows, where, together with interbedded greywacke it forms a lenticular deposit 91 m wide and 1.6 km long. The most significant of the sedimentary formations is the arkose horizon, within which the quartz ores of the Little Longlac Mine occur. It is up to 300 m thick and has been traced to DDH intersections south of the Main Narrows. Many narrow bands of iron formation have been found in drill cores, generally where the holes intersect one or the other of two continuous zones, one approximately midway between the arkose horizon and the volcanics-sediments contact to the north, the other across the southern claims north of the large peninsula southeast of the Hard Rock Mine. The north zone strikes about N70W and dips steeply south; the south zone, except where small Z-shaped drag folds are evident, strikes roughly east-west. Intrusive into the volcanic and sedimentary formations are many narrow, sill-like bodies of hornblende diorite, diorite porphyry, albite porphyry. Diorite and albite porphyries are not exposed at the surface but have been intersected in many DDHs. Generally, they form dykes or sills that are too small to be shown on the generalized geological map of the township. Well-jointed, but otherwise massive, quartz diabase outcrops on the peninsula extending southward across claim TB10688, and is believed to represent the same dyke that is exposed on the opposite shore of the lake on the adjoining Hard Rock property. Diamond drill holes in the area of the Main Narrows of Little Lonlac tested the indicated fault structure, mineralized float and mineralized narrow quartz veins.
| Rock Type | Rank | Composition | Texture | Relationship | Conglomerate | 1 | Host |
|---|---|---|---|---|
| Sandstone | 2 | Greywacke | Near | |
| Sandstone | 3 | Arkose | Near | |
| Ironstone-unsubdivided | 4 | Near | ||
| Diorite | 5 | Hornblende Diorite | Schistose | Near |
| Diorite | 6 | Diorite | Porhpyritic | Near |
| Porphyry-unsubdivided | 7 | Albite | Near | |
| Quartz Diabase | 8 | Quartz Diabase | Near | |
| Vein | 9 | Quartz | Host |
Dec 07, 2005 (B Nelson) - The hornblende diorite is massive to schistose, dark green, and medium grained, with large, well-developed crystals of hornblende. The individual bands of iron formation, since they can be traced under the lakes by geophysical survey methods, afford useful horizon markers in the determination of the geological structures. They suggest that to the east the volcanic and sedimentary formations have been offset along two major transverse faults. One of the faults strikes about N18 degrees E through, or a short distance east of, the Main Narrows; the other, N30 degrees--40 degrees E along the east shore of Kenogamisis Lake.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Pyrite | Economic | Ore | ||||
| 2 | Pyrrhotite | Economic | Ore | ||||
| 3 | Galena | Economic | Ore | ||||
| 4 | Sphalerite | Economic | Ore | ||||
| 1 | Quartz | Economic | Gangue | ||||
| Quartz | Alteration | Silicification | 1 | Unknown | Disseminated |
Dec 07, 2005 (B Nelson) - Diamond drilling by Oklend Gold Mines Limited intersected a number of significant gold values in narrow quartz veins. Assays ranged from 0.1 oz/ton Au over 0.5 m to 0.71 oz/ton Au over 0.4 m. None of the veins could be traced in closely spaced holes. Intersections on other parts of the 55 claim block returned gold values up to 0.25 oz/ton Au over 0.8 m and 0.39 oz/ton Au over 0.4 m.
Map - Little Long Lac gold area, District of Thunder Bay, Ontario
Publication Number: ARM44D Scale: 1:31,680 Date: 1997
Author: Bruce E.L.
Publisher Name: Ontario Dept. of Mines
Location:
Mono - Gold occurrences, prospects, and deposits of the Beardmore-Geraldton area, districts of Thunder Bay and Cochrane
Publication Number: OFR5630 Scale: Date: 1986
Author: Mason J.K., White G.D.
Publisher Name: Ontario Geological Survey
Location:
Part - Geology of Ashmore Township
Publication Number: ARV60-05 Scale: Date: 1997
Author: Horwood H.C., Pye E.G.
Publisher Name: Ontario Dept. of Mines
Location:
Map - Compilation series, Geraldton sheet, Thunder Bay and Cochrane districts
Publication Number: P0241 Scale: 1:126,720 Date: 1984
Author: Stott G.M., McConnell C.D., Mason J.K.
Publisher Name: Ontario Geological Survey
Location:
Map - Mineral deposits series, Ontario mineral potential, Longlac sheet, districts of Thunder Bay and Cochrane
Publication Number: P1527 Scale: 1:250,000 Date: 1978
Author: Springer J.S.
Publisher Name: Ontario Geological Survey
Location:
Map - Township of Ashmore, District of Thunder Bay, Ontario
Publication Number: M1951-02 Scale: 1:12,000 Date: 1997
Author: Horwood H.C., Pye E.G.
Publisher Name: Ontario Dept. of Mines
Location:
Map - Tashota-Geraldton sheet, geological compilation series, Thunder Bay and Cochrane districts
Publication Number: M2102 Scale: Date: 1997
Author: Pye E.G., Harris F.R., Fenwick K.G., Baillie J.
Publisher Name: Ontario Dept. of Mines
Location:
Map - Thunder Bay data series, Geraldton area, Thunder Bay District
Publication Number: P2520 Scale: 1:15,840 Date: 1982
Author: Love W.D.
Publisher Name: Ontario Geological Survey
Location:
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