Ministry of Energy, Northern Development and Mines
Permanent Link to this Record: MDI000000002292| Deposit Name(s) | Jr's Bear Creek - 2019 |
|---|---|
| Related Deposit Type | None |
| Deposit Status | discretionary occurrence |
| Date Created | 2019-May-09 |
| Date Last Modified | 2019-May-09 |
| Created By | S Hinz |
| Revised By | S Hinz |
Primary Commodities: rare earth elements
Township or Area: McNie
Latitude: 47° 2' 19.07" Longitude: -83° 20' 48.78"
UTM Zone: 17 Easting: 321709 Northing: 5212130 UTM Datum: NAD83
Resident Geologist District: Sault Ste. Marie
NTS Grid: 41O03SW
Point Location Description: Location of outcrop
Location Method: field visit with gps
Access Description: Access to the property is via the Domtar Road, north from the Ranger Lake Road (Highway 556), then west on the Aubinadong River Road for approximately 8km. The outcrop is accessible by hiking 200m through the bush on a blazed trail.
Property staked by Jim Ralph in 2018.
Province: Superior
Geological Age: Archean
| Rock Type | Rank | Composition | Texture | Relationship |
|---|---|---|---|---|
| felsic intrusive | 1 | granite | host | |
| mafic intrusive | 2 | diabase dike | near |
05/09/2019 (S Hinz) - The orbicules are found within a granitic body and are composed mainly of feldspar with other associated minerals. The orbicules are exposed over approximately 10 m, and several types of orbicules are present. The most common types of orbicules observed are approximately 20-25 cm in diameter, with mainly feldspar, variable “mafic” cores, up to 6 cm in diameter, and are rimmed by finer crystalline material. The second most common type of orbicule do not display a regular internal structure and are 2-7 cm in diameter. One orbicule, with a diameter of 40 cm, contained numerous 1 cm thick concentric rings.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Habit Description |
|---|---|---|---|---|---|---|---|
| 1 | feldspar | economic | ore | ||||
| 2 | chlorite | economic and alteration | gangue | chloritic | 1 | disseminated |
05/09/2019 (S Hinz) - Sampling of one orbicule and the surrounding matrix was carried out during a visit to the property in 2018. Samples were collected from the inner core, outer core, rim, and matrix. Total REE for the various zones of each orbicule are as follows: Inner core- 107ppm REE, Outer core- 438ppm REE, Rim- 823ppm REE, Matrix- 949ppm REE.
Book - Report of Activities, 2018 Resident Geologist Program Timmins Regional Resident Geologist Report: Timmins and Sault Ste. Marie Districts, P. 17-21
Publication Number: OFR6354 Date: 2019
Author: A. Bustard, P. Sword and E.H. van Hees
Publisher Name: OGS
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For detailed information regarding this mineral deposit please contact the Sault Ste. Marie Resident Geologist District Office