Ontario Geological Survey
Permanent Link to this Record:
MDI42F04NW00005
| Record Name(s) | Nama Creek Mines - 1954, Willroy Mines - 1967, Big Nama - 1964 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Past Producing Mine Without Reserves or Resources |
| Date Created | 1980-Aug-12 |
| Date Last Modified | 2022-Mar-08 |
| Created By | |
| Revised By |
Primary Commodities: Zinc, Copper
Secondary Commodities: Lead, Silver, Gold
Township or Area: Mapledoram
Latitude: 49° 9' 53.15" Longitude: -85° 50' 47.37"
UTM Zone: 16 Easting: 584090.92 Northing: 5446412.57 UTM Datum: NAD83
Resident Geologist District: Thunder Bay South
NTS Grid: 42F04NW
Point Location Description: General
Location Method: Conversion from MDI
1954-64: Nama Creek Mines Ltd. carried out EM survey and did considerable diamond drilling (558.7 m of drilling in 1958 and further drilling in 1959). 1964: Nama Creek Mines changed their name to Big Nama Creek Mines and leased the property to Willroy Mines Ltd. 1965-66: Willroy carried out 2841.1 m of diamond drilling and a geochemistry survey. 1967-71: Willroy Mines Ltd. drove an eleven degree inclined roadway for 1509 feet, 1390 feet of drifting, 385 feet of crosscutting and 27 underground DDH totalling 643.4 m. Sublevels at the 110 and 250 foot horizons. 19 surface DDH totalling 1128 m. Production began in 1969. 1972: airborne, ground geophysical surveys and diamond drilling. 1974: Willroy Mines purchased the Big Nama Creek property for $50,000. 1976: mined out the Big Nama Creek crown pillar. Mine closed. 1986: optioned to Noranda Mines Ltd.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 63.476 | 42F04NE0061 | 42F04NE0061 |
Province: Superior
Subprovince: Wawa
Terrane: Wawa-Abitibi
Belt: Schreiber-Hemlo
Geological Age: Archean
| Rock Type | Rank | Composition | Texture | Relationship | Pegmatite | 1 | Host |
|---|---|---|---|---|
| Gneiss-Unsubdivided | 2 | Biotite | Host | |
| Terrigenous-Clastic-Unsubdivided | 3 | Adjacent | ||
| Granitoid-Unsubdivided | 4 | Adjacent |
Jun 22, 2018 (Therese Pettigrew) - Keewatin metasediments and felsic intrusives are cut by north-trending diabase dykes. The mineral deposit occurs in pegmatite and in parts occupies a biotite gneiss, garnet-amphibolite-biotite gneiss contact.
| 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 | Sphalerite | Economic | Ore | ||||
| 4 | Chalcopyrite | Economic | Ore | ||||
| 5 | Galena | Economic | Ore | ||||
| 6 | Magnetite | Economic | Ore |
Jun 22, 2018 (Therese Pettigrew) - The mineral deposit occurs in pegmatite and in parts occupies a biotite gneiss, garnet-amphibolite-biotite gneiss contact. It strikes N50-60 degrees W for 1100 feet, dips 50-55 degrees NE near surface decreasing with depth to approx. 30 degrees NE and contains an ore shoot 700 feet long, up to 20 feet thick, and extending up to 700 feet down dip. Mineralization includes massive to disseminated pyrite, pyrrhotite, sphalerite, chalcopyrite, and rarely galena. The massive material forms a 2-7 feet thick core flanked by disseminated material. With increasing depth, mineral grade declines. The recovery grade of ore milled in 1969 averaged 3.00% Zn, 0.79% Cu, 0.02% Pb, 0.41 opt Ag, and 0.002 opt Au.
| Rank | Classification |
|---|---|
| 1 | VMS Base Metal |
| Zone | Year | Category | Tonnes | Reference | Comments | Commodities |
|---|---|---|---|---|---|---|
| Big Nama | 1970 | Unclassified | 24187 | CMH 1971-72, p. 54 | Mineral reserves of 26,662 tons averaging 0.86% Cu, 5.48% Zn, and 0.99 opt Ag. Drastic reduction is due to erratic ore conditions below the 250 foot horizon. | Copper 0.86 Percent, Silver 0.99 Ounce per Ton, Zinc 5.48 Percent |
| Big Nama | 1969 | Proven | 358852 | CMH 1971-72, p. 54 | Broken, proven, and indicated reserves of 395,567 tons to a depth of 300’ averaging 0.93% Cu, 2.51% Zn, and 0.73 opt Ag | Copper 0.93 Percent, Silver 0.73 Ounce per Ton, Zinc 2.51 Percent |
| Big Nama | 1968 | Unclassified | 751149 | CMH 1968-69, p. 48 | Ore reserves totalled 828,000 tons grading 0.79% Cu, 3.25% Zn, and 0.75 opt Ag | Copper 0.79 Percent, Silver 0.75 Ounce per Ton, Zinc 3.25 Percent |
| Year | Tonnes | Commodities | Reference | Comment |
|---|---|---|---|---|
| 1971 | 37845 |
Silver 40283 Ounces Gold 96 Ounces Copper 688125 Pounds Lead 63236 Pounds Zinc 3284407 Pounds |
Canadian Mines Handbook | 41,717 t milled for 688,125 lb Cu, 3,284,407 lb Zn, 63,236 lb Pb, 40.283 oz Ag, and 96 oz Au |
| 1970 | 80708 |
Silver 96301 Ounces Gold 2360 Ounces Copper 1303377 Pounds Lead 200293 Pounds Zinc 5733358 Pounds |
Canadian Mines Handbook | 88,965 t milled for 1,303,377 lb Cu, 5,733,358 lb Zn, 200,293 lb Pb, 96,301 oz Ag, and 2360 oz Au |
| 1968 | 9666 | Canadian Mines Handbook | 10,655 t milled for 0.87% Cu, 5.08% Zn, 0.11% Pb, and 1.21 opt Ag | |
| 1969 | 52138 |
Silver 23498 Ounces Gold 110 Ounces Copper 909272 Pounds Lead 25410 Pounds Zinc 3451131 Pounds |
Canadian Mines Handbook, Thunder Bay RGP mineral deposit files | 57,472 t milled for 909,272 lb Cu, 25,410 lb Pb, 3,451,131 lb Zn, 23,498 oz Ag, and 110 oz Au |
| 1976 | 261236 |
Silver 271685 Ounces Copper 2168 Tons Zinc 10214 Tons |
McKay DB, 1994. OFR 5906, Mineral Occurrences of the Manitouwadge Area, Vol.1, p12. | Mine closed 1976, Production: 261,236 tons @ 0.83% Cu, 3.91% Zn, 1.04oz/t Ag. |
Mono - Copper, nickel, lead and zinc deposits of Ontario
Publication Number: MDC012 Scale: Date: 1969
Author: Shklanka R.
Publisher Name: Ontario Dept. of Mines
Location:
Mono - Mineral Occurrences in the Manitouwadge Area, Volumes 1, 2 and 3
Publication Number: OFR5906 Scale: Date: 1994
Author: McKay D.B.
Publisher Name: Ontario Geological Survey
Location:
Part - Geology of the Manitouwadge area
Publication Number: ARV66-08 Scale: Date: 1997
Author: Pye E.G.
Publisher Name: Ontario Dept. of Mines
Location:
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