Ontario Geological Survey
Permanent Link to this Record:
MDI42L06SW00007
| Record Name(s) | King-Dodds Occurrence - 1915, Howard Falls Occurrence - 1915, King-Dodds - 1991, Howard Falls - 1991 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Discretionary Occurrence |
| Date Created | 1991-Jan-23 |
| Date Last Modified | 2022-May-30 |
| Created By | |
| Revised By |
Primary Commodities: Gold
Township or Area: Sollas Lake Area
Latitude: 50° 21' 49.63" Longitude: -87° 18' 43.58"
UTM Zone: 16 Easting: 477801.603 Northing: 5579126.036 UTM Datum: NAD83
Resident Geologist District: Thunder Bay North
NTS Grid: 42L06SW
Point Location Description: Shaft
Location Method: Conversion from MDI
Access Description: The occurrence is located in the Kowkash area. Drive north from Geraldton on Highway 584 to Highway 643. Continue on 643 to the Ogoki Road. Canoe south on Kawashkagama (Kowkash) River from the bridge at Ogoki Road to the first major bend in the river downstream from the island below Howard Falls. Proceed on foot approximately 300 m north to the occurrence.
1915: A high grade narrow quartz vein was discovered hosted in mafic metavolcanics. Claim KK2424 was staked. A staking rush was initiated. Stripping and trenching were conducted. 1916: A shaft was sunk to 17.1 m. 1983: D. Thorsteinson and N. Cox staked the occurrence. 1984: D. Thorsteinson, N. Cox and P. Lassila formed a private company, T.C.L. Incorporated. D. Thorsteinson officially holds claims TB815023-28 covering the occurrence.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 2.10401 | 42L06SW8228 | 42L06SW8228 |
Province: Superior
Geological Age: Archean
Dec 07, 2005 (B Nelson) - The Howard Falls area is underlain by massive and pillowed mafic metavolcanics. Minor quartz porphyries occur. Regional foliation strikes approximately 075 degrees and dips to the south. Gold is hosted in a quartz vein 10 cm wide and 4.26 m long. Beyond that, mineralization continued but there is no quartz at one end of the vein, and at the other it dips under a swamp. The vein strikes 10 degrees south of east and dips 75 degrees to the north, thus conforming in strike and dip with the country rock. The wall rock is pillow lava (meta-basalt) altered in places to schist. Numerous quartz porphyry dykes, up to 9.1 m wide, occur on the claim. The vein has been traced 30 m on the surface. The quartz is white, somewhat glassy in appearance and largely free from sulphides. An abundance of free gold occurred for 1.2-1.5 m along the vein on the surface next to the hanging wall. Lying along the north side of the quartz is a rusty schist band 15 cm wide and heavily impregnated with iron pyrite. The quartz vein is a crack-seal type with sericite-chlorite seams representing former portions of the wall rock. Pyrite and spectacular free gold are present in the quartz. Small quartz porphyry intrusions occur south of the occurrence.
| Rock Type | Rank | Composition | Texture | Relationship | Mafic pillowed flow | 1 | Basalt | Pillowed | Near |
|---|---|---|---|---|
| Vein | 2 | Quartz | Contains | |
| Quartz Porphyry | 3 | Host | ||
| Schist-Unsubdivided | 4 | Near |
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Gold | Economic | Ore | ||||
| 2 | Pyrite | Economic | Ore | ||||
| 1 | Quartz | Economic | Gangue | ||||
| Quartz | Alteration | Silicification | 1 |
Dec 07, 2005 (B Nelson) - Pyrite and spectacular free gold are present in the quartz vein. A shaft was sunk on the vein to 9.0 m and spectacular free gold was reported at the bottom. Some small scale hand cobbing took place, but no official production is noted.
Dec 07, 2005 (B Nelson) - The wall rock is pillow lava (meta-basalt) altered in places to schist.
Map - Lake Nipigon, Thunder Bay District, Ontario
Publication Number: Map 8A Scale: 1:253,440 Date: 1910
Author: Dickison, A
Publisher Name: Geological Survey of Canada
Location: https://doi.org/10.4095/107994
Mono - Gold occurrences, prospects, and deposits of the Beardmore-Geraldton area, districts of Thunder Bay and Cochrane
Publication Number: OFR5630 Date: 1986
Author: Mason J.K., White G.D.
Publisher Name: Ontario Geological Survey
Location:
Folio - Deeds Lake area, District of Thunder Bay
Publication Number: GDIF021 Date: 1997
Author: Thunder Bay RGO
Publisher Name: Ontario Geological Survey
Location:
File - Resident Geologist Mineral Deposit Files
Publication Number: Min Dep Date:
Author:
Publisher Name:
Location: Thunder Bay RGP
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