Mineral Deposit Inventory for Ontario

Ministry of Energy, Northern Development and Mines

Permanent Link to this Record: MDI000000000251

Deposit: MDI000000000251


Mineral Deposit Identification
Deposit Name(s) U2 Kimberlite - 2007
Deposit Status prospect
Date Created 2007-Feb-27
Date Last Modified 2014-Oct-24
Created By A Wilson
Revised By A Wilson


Primary Commodities: kimberlite, diamond


Township or Area: Bma 528 844

Latitude: 52° 56' 42.04"    Longitude: -84° 46' 22.23"

UTM Zone: 16    Easting: 649645   Northing: 5868475    UTM Datum: NAD83

Resident Geologist District: Timmins

NTS Grid: 43C15NW

Point Location Description: GPS co-ordinates for Metalex DDH U2-1

Location Method: field visit with gps

Source Map: GPS co-ordinates for Metalex DDH U2-1

Access Description: The site is accessible by air from Attawapiskat

Exploration and Mining History

2006-2010: Metalex Ventures Ltd. - AEM, AMAG, GC, DD-5-3585 feet, 7 delineation drill holes, 12 RC drill holes (391 tonnes)

Assessment Work on File

Assessment Work on File
Office File Number   Online Assessment File Identifier   Online Assessment File Directory  
T-5808/ 2.39900     20000003667     Open


Province: Paleozoic And Mesozoic Basins

Subprovince: Hudson Bay Lowland

Mineral Deposit Lithology

Lithology Data
Rock Type Rank Composition Texture Relationship
kimberlite 1 brecciated host
limestone 2 adjacent

Lithology Comments

08/18/2009 (A Wilson) - The discovery of a second, new kimberlite, the U2 kimberlite, was announced in January 2007. This kimberlite has a geophysical surface area of approximately 7 ha and was intersected at a depth of approximately 17 m The kimberlite is described as green in colour and weakly altered breccia. It contains limestone xenoliths and some granite xenoliths. Olivine macrocrysts are moderately serpentinized. The U2 kimberlite has an estimated surface area of 7 ha.


Deposit Mineralization and Alteration
Rank Mineral Name Class Economic Mineral Type Alteration Mineral Type Alteration Ranking Alteration Intensity Habit Description
1 diamond economic ore

Mineralization Comments

01/25/2011 (A Wilson) - A 87.88 kg sample of kimberlite was processed from a single drill hole, 2 microdiamonds were recovered. Within this sample, 67 Group I eclogitic garnets, 20 cpx, 16 ol, 9 opx, 5 chromites and 3 peridotitic G10 garnets were recovered, with compositions analogous to those found in the diamond inclusion field. A total of 54 diamonds were recovered from 1700.6 kg of core drilled from the pipe. A total of 226 commercial sized diamonds were recovered from the first 11 reverse circulation drill holes completed in 2010. Approximately 42% of the sones are white. A grade of approximately 18.1 cpht was returned below 90 m depth.

Mineral Deposit Details

Deposit Classification
Rank Classification            
1 kimberlite
2 diamond
Deposit Characteristics
Rank Characteristic            
1 intrusive
2 discordant


Publication - News Release

Date: 2007

Author: Metalex Ventures Ltd.

Reference Location: Timmins RRGO riles

Publication - News Release

Date: 2007

Author: Metalex Ventures Ltd.

Reference Location: Timmins RRGO files

Map - Hudson Bay and James Bay Lowlands region interpreted from aeromagnetic data, East Sheet

Publication Number: P3598 (rev)    Scale: 1:500 000    Date: 2008

Publisher Name: OGS

Book - Mineral Deposits of Northern Ontario North of Latitude 4930'

Publication Number: OFR6242    Date: 2009

Author: G. M. Stott and S. Josey

Publisher Name: OGS

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Ministry Contact Information

For detailed information regarding this mineral deposit please contact the Timmins Resident Geologist District Office