Ontario Geological Survey
Permanent Link to this Record:
MDI42E13SW00036
| Record Name(s) | Greenspar - 1936, J.P. Sheridan - 1964 |
|---|---|
| Related Record Type | Partial |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1991-Feb-05 |
| Date Last Modified | 2022-Sep-27 |
| Created By | |
| Revised By |
Primary Commodities: Copper
Secondary Commodities: Gold, Silver
Township or Area: Pifher
Latitude: 49° 49' 18.56" Longitude: -87° 47' 50.14"
UTM Zone: 16 Easting: 442652.082 Northing: 5519125.367 UTM Datum: NAD83
Resident Geologist District: Thunder Bay North
NTS Grid: 42E13SW
Point Location Description: Trenches and diamond-drill holes.
Location Method: Conversion from MDI
Access Description: The property lies approximately 1.5 km northwest of Miner (Little Crooked Green) Lake in Pifher Township. Travel north on Highway 801, which leaves Highway 11 approximately 23 km east of Beardmore, to the Crooked Green River (Second River Crossing), a distance of 22 km. From this poiint, continue westward along Highway 801 for 1 km and turn north on a small gravel trail. The property lies 1 km along this trail.
1936: Stripping and trenching were conducted on a sulphide mineralized zone, but no gold values were found. 1964-65: Prospecting, trenching, a geological survey, an S.P. survey and diamond-drilling (4 holes, 141.1 m total) was conducted. 1969: Two holes totalling 95.7 m were drilled. 1970-77: J. Wodian conducted trenching on the northeast portion of the initial Greenspar Mine Ltd. claim block. 1981: Three prospectors staked and prospected claims covering the Greenspar occurrences. 1982: Anyox Metals Ltd. optioned the property. An EM survey defined 3 conductors. 1983: Anyox drilled 4 holes totalling 589.8 m to test conductors. 2015: Alto Ventures took 38 till samples for processing at Overburden Drilling Management over the Miner Lake and Greenoaks properties.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 33 | 42E13SW0068 | 42E13SW0068 |
Province: Superior
Geological Age: Archean
Dec 07, 2005 (B Nelson) - The Greenspar property is underlain by mafic to felsic metavolcanics, generally flow rocks but some feldspar porphyry (volcanic-related) also occurs. Small granodiorite intrusions have been noted by Greenspar Mines Ltd. The rocks are sheared locally. A set of vertical fracture zones was noted striking 060-063 degrees through the property. Py, cp, py and minor bn are associated with gold mineralization. Sulphides occur in disseminated form in the volcanic rocks, fractures, shear zones and quartz veins. The No. 1 showing is within a 9 m wide, near vertical shear zone. The zone consists of quartz veining, py, po, and minor cp (5-10% total sulphides). The No. 2 showing is exposed in a large trench 17 m long strikingf 020 degrees and located 190 m east-southeast of the No. 1 showing near the eastern boundary of claim TB 604845. A quartz vein 10.2 cm to 25.4 cm in width strikes 070 degrees and dips 67 degrees south. The host rock is a feldspar porphyry and only trace values of gold and silver were received from sampling of the vein. A shear zone (120 degree strike) was located south of the No. 2 showing approximately 50 m north of post #2 on claime TB 604845. The zone is rusty, pyritized, and hosted by a porphyry. A grab sample of cherty iron formation gave low gold-silver values.
| Rock Type | Rank | Composition | Texture | Relationship | Feldspar Porphyry | 1 | Feldspar | Sheared | Host |
|---|---|---|---|---|
| Granodiorite | 2 | Near | ||
| Ironstone-unsubdivided | 3 | Cherty | Host | |
| Vein | 4 | Quartz | Host | |
| Granodiorite | 5 | Sheared | Near |
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Bornite | Economic | Ore | ||||
| 2 | Chalcopyrite | Economic | Ore | ||||
| 3 | Pyrite | Economic | Ore | ||||
| 4 | Pyrrhotite | Economic | Ore | ||||
| 1 | Quartz | Economic | Gangue | ||||
| Quartz | Alteration | Silicification | 1 |
Dec 07, 2005 (B Nelson) - Tyson (1965) for Greenspar Mines reported a 4 m wide zone assaying 0.07 oz/ton Au. One 0.15 m section assayed 0.64 oz/ton gold. Another channel sample assayed 2.28% copper across 2.1 m. Low gold values were realized from diamond-drilling. Copper assays up to 3.3% were noted over narrow widths. Anyox Metals Ltd. obtained low gold values in a drill program that intersected intermediate to felsic metavolcanics. These host rock fractures filled or vein hosted py and cp (5% total sulphides). Assays up to 0.25% Cu and 0.255 oz/ton Ag over narrow intersections were noted.
Date: Jan 02, 1997
Geologist: B Nelson
Notes: The Beardmore-Geraldton Economic Geologist visited the occurrence November 12, 1981.
Map - Sturgeon River gold area, District of Thunder Bay, Ontario
Publication Number: ARM45A Scale: 1:63,360 Date: 1998
Author: Bruce E.L., Laird H.C.
Publisher Name: Ontario Dept. of Mines
Location:
Map - Tashota-Geraldton sheet, geological compilation series, Thunder Bay and Cochrane districts
Publication Number: M2102 Date: 1997
Author: Pye E.G., Harris F.R., Fenwick K.G., Baillie J.
Publisher Name: Ontario Dept. of Mines
Location:
Part - The western part of the Sturgeon River area (Sturgeon R.-Beardmore section)
Publication Number: ARV45-02.002 Date: 1998
Author: Laird H.C.
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 Date: 1986
Author: Mason J.K., White G.D.
Publisher Name: Ontario Geological Survey
Location:
File - Resident Geologist Mineral Deposit Files
Publication Number: Min Dep Date:
Author:
Publisher Name:
Location: Thunder Bay RGP
We are continuously updating our assessment file / technical report information. If you notice errors in the data, please contact us.
Please review our Terms of Use agreement for this data product.
For detailed information regarding this mineral record please contact the Thunder Bay North Resident Geologist District Office