Ontario Geological Survey
Permanent Link to this Record:
MDI43B12NW00004
| Record Name(s) | Zulu-1 - 2000, Grid Z - 1995, Monopros DDH Z-1-89 - 1989 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Prospect |
| Date Created | 1995-Mar-28 |
| Date Last Modified | 2022-Oct-06 |
| Created By | |
| Revised By |
Primary Commodities: Diamond, Kimberlite
Township or Area: BMA 526 834
Latitude: 52° 43' 43.41" Longitude: -83° 49' 46.73"
UTM Zone: 17 Easting: 308934.001 Northing: 5845850.005 UTM Datum: NAD83
Resident Geologist District: Timmins
NTS Grid: 43B12NW
Point Location Description: Drill collar for DDH Z-1-89
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. 1989: Monopros Ltd. - ground magnetic survey, 1 ddh (122 m). 1997: Monopros Ltd. - ground magnetic survey, reverse circulation drilling (7 holes, 511.5 m), sampling (12 788.7 kg sample), diamond analysis. 2006: DeBeers Canada Inc. - airborne geophysics. 2007: DeBeers Canada Inc. - delineation drilling, micro diamond analysis
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| T-3263 / 2.12005 | 43B12NW0001 | 43B12NW0001 |
| T-3263 / 13 | 43B13NW0008 | 43B13NW0008 |
| T-3263 / 2.18143 | 43B12NW2001 | 43B12NW2001 |
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 kimberlite and kimberlite breccia with a globular segregationary zone. Limestone xenoliths are present as well as autoliths, basement xenoliths and mantle nodules. Megacrysts of phlogopite, ilmenite, and chrome diopside have been observed. It was intersected under 6.2 m of overburden and may be two closely spaced kimberlite pipes. Garnet compositions are almost exclusively G-9. None of the chromite compoisitions fall within the compositional fields of chromite found intergrown with diamond.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Diamond | Economic | Ore | ||||
| 2 | Olivine | Economic | Ore | ||||
| 3 | Pyrope | Economic | Ore | ||||
| 4 | Ilmenite | Economic | Ore | ||||
| 5 | Diopside | Economic | Ore | ||||
| 6 | Phlogopite | Economic | Ore |
Dec 07, 2005 (A Wilson) - A total of 13 macrodiamonds was recovered from 12 788.7 kg of kimberlite. The grade is estimated to be 40 cpht.
File - Resident Geologist files T-4664
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: 34-35 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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