Ontario Geological Survey
Permanent Link to this Record:
MDI43B13NW00002
| Record Name(s) | Golf- 1 - 2000, Grid G1 - 1995, Monopros DDH G1-1-88 - 1988 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1995-Mar-24 |
| Date Last Modified | 2022-Oct-06 |
| Created By | |
| Revised By |
Primary Commodities: Kimberlite
Township or Area: BMA 528 834
Latitude: 52° 54' 59.3" Longitude: -83° 49' 30.51"
UTM Zone: 17 Easting: 310059 Northing: 5866716.003 UTM Datum: NAD83
Resident Geologist District: Timmins
NTS Grid: 43B13NW
Point Location Description: Drill collar for DDH G1-1-88
Location Method: Based on Assessment
Access Description: Via helicopter from Attawapiskat.
1984-86: Monopros Ltd.: regional sediment sampling program. 1986-87: Monopros Ltd.: airborne magnetic survey. 1988-89: Monopros Ltd. - ground magnetic survey, 1 ddh (650 ft). 1998-99: Monopros Ltd. - ground geophysics. 2000-2001: DeBeers Canada Inc. - MMI survey, airborne geophysics. 2008: DeBeers Canada Inc. - airborne geophysics
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| T-4292 / 2.19828 | 43B13NW2002 | 43B13NW2002 |
| T-3261 / 2.11991 | 43B13NW0001 | 43B13NW0001 |
Province: Paleozoic and Mesozoic Basins
Subprovince: Hudson Bay Basin
Geological Age: Mesozoic Geochronological Age: 180 MA Geochron. Age Ref.: OFR 6019
Dec 07, 2005 (A Wilson) - In the Attawapiskat area there are both Early Jurassic and Proterozoic kimberlites. The early Jurassic kimberlites are centred at approximately latitude 52 45N and 83 50 W. These kimberlites occur along the Winisk River fault trend and occur where this fault splays toward James Bay. The kimberlite distribution pattern is elongated northwest along the Winisk River fault, parallel to the NW trend of the Proterozoic Sutton Inlier (120 km north of Attawapiskat). The Early Jurassic kimberlites lie just south of the NE trending Cape Henrietta Maria Arch.
| Rock Type | Rank | Composition | Texture | Relationship | Kimberlite-Unsubdivided | 1 | Host |
|---|
Dec 07, 2005 (A Wilson) - The kimberlite is described as a hypabyssal macrocrystic, segregationary kimberlite. It contains mantle nodules composed of olivine-pyroxene. Garnet, ilmentie and clinopyroxene megacrysts were observed and limestone xenoliths were noted throughout. Toward the bottom of the hole, the presence of kimberlite dikes altered to an orange colour were noted cutting the hypabyssal kimberlite. The garnet is almost exclusively G-9. A few chromite grains fall near the diamond inclusion field, but the ilmenites display a reduced condition, indicating favourable conditions for diamond preservation.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Olivine | Economic | Ore | ||||
| 2 | Clinopyroxene | Economic | Ore | ||||
| 3 | Pyrope | Economic | Ore | ||||
| 4 | Ilmenite | Economic | Ore | ||||
| 5 | Chromite | Economic | Ore |
File - Resident Geologist files T-4510, T-4686
Publication Number: Date:
Author:
Publisher Name:
Location: Timmins RGP office
Map - Known Kimberlites of Eastern Ontario
Publication Number: P3321 Scale: 1:50,000 Date: 1995
Author: Zalnieriunas R.V., Sage R.P.
Publisher Name: Ontario Geological Survey
Location:
MonoMap - Kimberlites of the Attawapiskat Area, James Bay Lowlands, Northern Ontario
Publication Number: OFR6019 Page: 22 Date: 2000
Author: Sage R.P.
Publisher Name: Ontario Geological Survey
Location:
Article - Alkalic rock, carbonatite and kimberlite complexes of Ontario, Superior province
Publication Number: SV04-01.018 Page: 683-709 Date: 1997
Author: Sage R.P.
Publisher Name: Ontario Geological Survey
Location:
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