Ontario Geological Survey
Permanent Link to this Record:
MDI42D15SW00027
| Record Name(s) | Fire Mountain Occurrence - 1896, Claim 362X - 1896 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Discretionary Occurrence |
| Date Created | 1991-Apr-02 |
| Date Last Modified | 2023-Aug-03 |
| Created By | |
| Revised By |
Primary Commodities: Gold
Secondary Commodities: Copper, Zinc
Township or Area: Tuuri
Latitude: 48° 48' 30.12" Longitude: -86° 47' 22.88"
UTM Zone: 16 Easting: 515441.62 Northing: 5406174.49 UTM Datum: NAD83
Resident Geologist District: Thunder Bay South
NTS Grid: 42D15SW
Point Location Description: Adit
Location Method: Field Visit
Access Description: This occurrence is reported to be 1.5 miles (2.4 km) northeast of the Steel Lake Siding in Tuuri Township (claim map G-635). The exact location of this occurrence is at present unknown. The Daily Journal, December 5, 1986: states that a gold quarry was discovered at the base of a Fire Mountain. The claims are accessed via a bush road that extends north from Highway 17 just west of the Prairie River. Two powerlines also cross the area in an east-west direction.
1896: Prospecting; W.H. Arnold. Gold mineralization reportedly discovered at this time. 1913: Thirty three days of unspecified work; D. Jossart. 1914: Sixty days of unspecified work; D. Jossart. 1915: Two hundred and thirty seven days of unspecified work; D. Jossart. 1964: Geological and geochemical surveys and diamond drilling (6 holes totalling 260 feet); Cominco. 1984: Property examination; OGS Resident Geologist staff. 1991: Prospecting and sampling; J. Courtney and G. Daniels. Property examination and lithogeochemical sampling; OGS Resident Geologist staff. 1992: Soil sampling; J. Courtney and G. Daniels.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 10 | 42D05SW0099 | 42D05SW0099 |
| OP91-081 | 42D15NW0006 | 42D15NW0006 |
| OP92-531 | 42D15SW0003 | 42D15SW0003 |
Province: Superior
Subprovince: Wawa
Terrane: Wawa-Abitibi
Belt: Schreiber-Hemlo
Geological Age: Archean
Dec 07, 2005 (D McKay) - An old adit was relocated in 1991 by prospectors J. Courtney and G. Daniels; it may represent part of the historical workings described in the original newspaper article. The local geology was described in Schnieders et al. (1992): The adit is situated at the base of a west-facing, 8 m high cliff face. It is 1.2 m wide, 1.8 m high and extends approximately 8 m into the hillside. The adit entrance is partly obscured by talus blocks and material which has sloughed down from the hillside. Blocks of talus and muck are littered along a narrow depression along which a trail leads to the adit. The muck pile is approximately 2 by 3 by 15 m in size. A 15 m long cross-trench was discovered on top of the hill, approximately 30 m east of the adit. Rocks in the vicinity have been highly sheared, resulting in very foliated, fissile phyllites which have either a sedimentary or mafic-volcanic protolith. Whole-rock chemical analyses provided by J. Courtney suggest that the volcanic rocks are dominantly tholeiitic basalt and andesite. At the adit, a 4 m wide gossan has developed in pyritiferous phyllites and more massive, up to 45 cm wide, units rich in quartz. The host rocks are foliated at 100/78S. Banded rocks display tight folds. Mineralization consists of wispy to ribboned, locally massive pyrite and minor chalcopyrite in sericitic and chloritic phyllites and cherty rocks. Small white quartz veins and pods occur locally. Calcite is ubiquitous in altered and deformed rocks; rocks are weakly to strongly carbonatized. Protolith determination is hampered by pervasive alteration and deformation, especially in the vicinity of the adit. Flattened, carbonatized pillowed mafic flows were recognized approximately 100 m north of the adit.
| Rock Type | Rank | Composition | Texture | Relationship | Mafic lava flow-unsubdivided | 1 | Tholeiitic Basalt And Andesite | Pillowed Flows And Breccias | Host |
|---|---|---|---|---|
| Ironstone-unsubdivided | 2 | Host | ||
| Vein | 3 | Quartz | Host | |
| Claystone | 4 | Graphitic slate | Host |
Dec 07, 2005 (D McKay) - The majority of local rocks on the property are apparently mafic volcanics, consisting largely of pillowed flows and pillow breccias. Interflow sulphide-facies iron formation and graphitic slates comprise a minor portion of the local stratigraphy. Massive and 'crack-seal'-textured quartz veins are mineralized with pyrite. A large, gossanous zone of extensive pyrite mineralization is exposed along and north of the northerly powerline. Samples have returned up to 745 ppb Au.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Chalcopyrite | Economic | Ore | ||||
| 2 | Galena | Economic | Ore | ||||
| 3 | Pyrite | Economic | Ore | ||||
| Quartz | Alteration | Hydrothermal | 1 | Unknown | Veins | ||
| Calcite | Alteration | Hydrothermal | 2 | Unknown | Veins |
Dec 07, 2005 (D McKay) - A large, gossanous zone of extensive pyrite mineralization is exposed along and north of the northerly powerline. Samples have returned up to 745 ppb Au. The Daily Journal (December 5, 1896) reported: ...the ore is of a slate formation, highly mineralized and carrying galena, copper and iron pyrites in good quantities. Assays have been made and they run from $1.50 (0.08 oz./ton) to $40 (2.12 oz./ton) per ton gold. Gold value estimated to be $18.83 per ounce in 1896 (Resident Geologist's Mineral Deposit Files, Schreiber-Hemlo District, Thunder Bay). Grab samples collected from the vicinity of the adit in 1991 by OGS Resident Geologist staff returned assay values which varied from nil to 0.012 opt Au, 56 to 296 ppm Cu and 76 to 324 ppm Zn. A soil sample collected in 1992 by J. Courtney and G. Daniels returned 2623 ppm Zn; 23 of 61 samples returned greater than 100 ppm Zn (Schnieders et al. 1993).
Dec 07, 2005 (D McKay) - Small white quartz veins and pods occur locally. Calcite is ubiquitous in altered and deformed rocks; rocks are weakly to strongly carbonatized. Protolith determination is hampered by pervasive alteration and deformation, especially in the vicinity of the adit. Flattened, carbonatized pillowed mafic flows were recognized approximately 100 m north of the adit.
File - Schreiber-Hemlo Resident Geologist Mineral Deposit Files
Publication Number: Min Dep Date: 1996
Author:
Publisher Name:
Location: Thunder Bay RGP
Map - Nipigon-Schreiber, geological compilation series, Thunder Bay District
Publication Number: M2232 Scale: 1:253,440 Date: 1973
Author: Carter M.W., McIlwaine W.H., Wisbey P.A.
Publisher Name: Ontario Division of Mines
Location:
Mono - Mineral Occurrences in the Nipigon-Marathon Area, Volumes 1 and 2.
Publication Number: OFR5951 Page: 669-674 Date: 1996
Author: Schnieders B.R., Smyk M.C., Speed A.A., McKay D.B.
Publisher Name: Ontario Geological Survey
Location:
Map - Jackfish-Middleton area, Thunder Bay District
Publication Number: M2107 Date: 1967
Author: Walker J.W.R.
Publisher Name: Ontario Dept. of Mines
Location:
MonoMap - Geology of the Jackfish-Middleton area, District of Thunder Bay
Publication Number: R050 Date: 1997
Author: Walker J.W.R.
Publisher Name: Ontario Dept. of Mines
Location:
Article - Schreiber-Hemlo Resident Geologist's District-1991
Publication Number: MP158.007 Page: 133-135 Date: 1997
Author: Schnieders B.R., Smyk M.C., McKay D.B.
Publisher Name: Ontario Geological Survey
Location:
Compend - Report of Activities 1992, Resident Geologists
Publication Number: MP161 Page: 128 Date: 1993
Author: Fenwick K.G., Pitts A.E., Newsome J.W.
Publisher Name: Ontario Geological Survey
Location:
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