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Ontario Geological Survey
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MDI31M12SW00017
| Record Name(s) | 95-2 - 1996, 95-3 - 1996, Sudbury Contact - 1996 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Developed Prospect With Reported Reserves or Resources |
| Date Created | 2002-Jan-22 |
| Date Last Modified | 2023-Aug-16 |
| Created By | |
| Revised By |
Primary Commodities: Diamond, Kimberlite
Township or Area: Lundy
Latitude: 47° 31' 24.3" Longitude: -79° 53' 29.34"
UTM Zone: 17 Easting: 583448.587 Northing: 5263927.76 UTM Datum: NAD83
Resident Geologist District: Kirkland Lake
NTS Grid: 31M12SW
Point Location Description: OVDH LU95-08 (CO-2415)
Location Method: Field Visit with GPS
Access Description: Highway 65 west from New Liskeard to twin Lakes Road.
Sudbury Contact Mines Limited conducted a regional diamond exploration till sampling program between Kirkland Lake and Cobalt in the early 1990's. Airborne and ground magnetic surveys were completed to follow up areas of favourable kimberlite indicator minerals detected in the tills. Eventually, overburden and diamond drilling tested favourable targets. The 95-2 pipe (sometimes referred to as 95-3) was discovered in 1995 in Lundy Township at NAD27 Zone 17 5263700N 583440E. It is one of 4 discovered by Sudbury Contact Mines Limited in the immediate area. By the end of 1996, 56 micro and 24 macro diamonds had been recovered from 1244.76 kg of kimberlite recovered from core and reverse-circulation drilling. Sudbury Contact had a diamond exploration hiatus from then until 2002. The company processed core previously drilled and completed further definition drilling on the 95-2 pipe and recovered 301 diamonds from 1711 kg of kimberlite (Sudbury Contact Mines Limited Press Release July 18, 2003). In 2003, the company completed 6 large diameter holes, 300-m each to collect 652 tons of kimberlite. 1449 diamonds totalling 67.354 carats were recovered with 12 diamonds exceeding 3.35 mm.The dominant kimberlite facies through the eastern and central portions of Kimberlite 95-2 returned recovered grades of 16.31cpht for the upper Weathered TKB (WTKB) facies, and 13.28 cpht for the lower Eastern TKB unit. The western portion of the pipe, confirmed as a separate intrusion, returned a lower grade tenor, with the Western WTKB facies grading 4.25 cpht, the Western TKB facies 5.49 cpht, and in a newly discovered Hypabyssal Kimberlite facies ('K5'), 3.72 cpht. (Sudbury Contact Mines Limited Press Release May 28, 2004). 2012: Stornoway Diamond Corporation commissioned an independent mineral resource assessment on the 95-2 kimberlite pipe. 2015: 80% ownership transferred to North Arrow Minerals Inc.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| CO-2415 | 31M12SW2001 | 31M12SW2001 |
| CO-2312 | 31M12SW0013 | 31M12SW0013 |
| CO-2313 | 31M12SW0014 | 31M12SW0014 |
| CO-2309 | 31M12SW0012 | 31M12SW0012 |
Province: Southern
Subprovince: Cobalt Basin
Supergroup: Huronian Supergroup
Formation Group: Cobalt Group
Geological Age: Mesozoic Geochronological Age: 155.3+/-2.3 Ma Geochron. Age Ref.: Heaman, Kjarsgaard and Creaser, 2004
Dec 07, 2005 (D Guidon) - The 95-2 pipe is about 5.3 km southwest of the northwest-trending Cross Lake Fault. The Cross Lake Fault is part of the Timiskaming Structural Zone. The pipe intrudes Gowganda Formation sedimentary rocks of the Huronian Supergroup.
Dec 07, 2005 (G Grabowski) - Pelletal-textured volcaniclastic diatreme breccia.
| Rock Type | Rank | Composition | Texture | Relationship | Kimberlite-Unsubdivided | 1 | Tuffisitic Breccia | Host |
|---|---|---|---|---|
| Kimberlite-Unsubdivided | 2 | Hypabyssal Diatreme | Host | |
| Kimberlite-Unsubdivided | 3 | Globular Segregationary Hypabyssal | Host | |
| Conglomerate | 4 | Near |
Dec 07, 2005 (D Guidon) - The kimberlite shows a weak to moderate positive magnetic anomaly that is oval shaped, approximately 350 by 200 m. The kimberlite intrudes Gowganda Formation sedimentary rocks. The pipe is under 30 to 50 m of overburden. Based on diamond drilling prior to the mini bulk sampling program, the pipe was thought to be 400 m by 75 to 150 m in width at the -200 m level. The kimberlite has been weathered in the upper 20 to 25 m of the pipe. The dominant lithology is tuffisitic kimberlite breccia grading to tuffisitic kimberlite in the western portion of the pipe. The eastern portion of the pipe is dominated by tuffisitic kimberlite breccia that has been diluted by host rock. In the western portion of the pipe, deeper holes have intersected transitional hypabyssal to diatreme kimberlite and pure globular segregationary hypabyssal kimberlite (Kjarsgaard, et al. 2003).
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Diamond | Economic | Ore | ||||
| 1 | Olivine | Economic | Gangue | ||||
| 2 | Phlogopite | Economic | Gangue | ||||
| 3 | Perovskite | Economic | Gangue | ||||
| 4 | Spinel | Economic | Gangue | ||||
| 5 | Carbonate | Economic | Gangue | ||||
| 6 | Serpentine | Economic | Gangue |
Dec 07, 2005 (D Guidon) - By the end of 1996, 56 micro and 24 macro diamonds had been recovered from 1244.76 kg of kimberlite recovered from core and reverse-circulation drilling. Sudbury Contact had a diamond exploration hiatus from then until 2002. The company processed core previously drilled and completed further definition drilling on the 95-2 pipe and recovered 301 diamonds from 1711 kg of kimberlite (Sudbury Contact Mines Limited Press Release July 18, 2003).
| Rank | Classification |
|---|---|
| 1 | Diatreme |
| Rank | Characteristic |
|---|---|
| 1 | Pipe |
| Shape | Length | Thickness | Depth | Strike | Dip | Plunge | Trend | Age | Reference |
|---|---|---|---|---|---|---|---|---|---|
| Cylindrical | 400 | 150 | 300 | 90 | LATE-JURASSIC-CRETACEOUS |
Date: Apr 07, 2004
Geologist: D Guidon
Notes: Drill core examined July 4, 2003 during kimberlite conference field trip and bulk sampling process viewed October 27, 2003. Photos: 730379-730381 - drill core, 730589-730604 - mini bulk sampling program. A mini-bulk sample of the pipe was collected between the end of October and the beginning of December 2003. Six 24-inch diameter holes were drilled into the kimberlite and 800 wet tonnes of kimberlite were collected for processing. Button tricone bits drill into the rock to 300 m depth. Water and air lift the broken kimberlite to surface. The sample is then passed over a shake table before being packed into 1 tonne nylon bags. Samples were shipped to SGS Lakefield Research Limited. SGS constructed a 10 tonne per hour pilot plant to process the material. Two holes in the western portion of the pipe were terminated in kimberlite at 300 m. They were expected to exit kimberlite at about 200 m. Results are expected in the first quarter of 2004 (Sudbury Contact Mines Limited Press Release December 9, 2003). Key Word in Description Photo Number Year Township Description 730379 2003 Lundy 95-2 Kimberlite - drill core diatreme breccia. 730380 2003 Lundy 95-2 Kimberlite - drill core diatreme breccia. 730381 2003 Lundy 95-2 Kimberlite - drill core diatreme breccia. 730589 2003 Lundy Sudbury Contact Mines 95-2 kimberlite bulk sample - 24 inch drill 730590 2003 Lundy Sudbury Contact Mines 95-2 kimberlite bulk sample - samples in bags for shipping. 730591 2003 Lundy Sudbury Contact Mines 95-2 kimberlite bulk sample - crane for lifting sample bags 730592 2003 Lundy Sudbury Contact Mines 95-2 kimberlite bulk sample - drill rod to keep hole from wandering 730593 2003 Lundy Sudbury Contact Mines 95-2 kimberlite bulk sample - 24 inch tricone bit 730594 2003 Lundy Sudbury Contact Mines 95-2 kimberlite bulk sample - loading samples into trailer 730595 2003 Lundy Sudbury Contact Mines 95-2 kimberlite bulk sample - unit next to the drill screens the sample from the water. 730596 2003 Lundy Sudbury Contact Mines 95-2 kimberlite bulk sample - sample being bagged. 730597 2003 Lundy Sudbury Contact Mines 95-2 kimberlite bulk sample - sample being wighed and placed on a pallet 730598 2003 Lundy Sudbury Contact Mines 95-2 kimberlite bulk sample - sample being moved by crane. 730599 2003 Lundy Sudbury Contact Mines 95-2 kimberlite bulk sample - Gary Grabowski looks at a wrnech used with the drill 730600 2003 Lundy Sudbury Contact Mines 95-2 kimberlite bulk sample - drill monitoring equipment. Drill bit at 290.95 m. 730601 2003 Lundy Sudbury Contact Mines 95-2 kimberlite bulk sample - control panel and drill rod. 730602 2003 Lundy Sudbury Contact Mines 95-2 kimberlite bulk sample - drill casing being moved. 730603 2003 Lundy Sudbury Contact Mines 95-2 kimberlite bulk sample - sample coming off screens and into the sample bag. 730604 2003 Lundy Sudbury Contact Mines 95-2 kimberlite bulk sample - silt settling pond
| Zone | Year | Category | Tonnes | Reference | Comments | Commodities |
|---|---|---|---|---|---|---|
| 95-2 | 2012 | Inferred Mineral Resource | 20200000 | Lepine, Zhuk and Farrow 2012 | Diamond 11.3 Carats per 100 Tonnes | |
| 95-2 | 2004 | Unclassified | 23000000 | Sudbury Contact press release May 28, 2004 | 10.33 cpht - avg recovered from mini-bulk sample | Diamond 10.33 Carats per 100 Tonnes |
Map - Geological series, geology and mineral deposits, Lundy Township, Timiskaming District
Publication Number: P2733 Scale: 1:15,840 Date: 1985
Author: Owsiacki L.
Publisher Name: Ontario Geological Survey
Location:
MonoMap - Kimberlites of the Lake Timiskaming Structural Zone
Publication Number: OFR5937 Date: 1996
Author: Sage R.P.
Publisher Name: Ontario Geological Survey
Location:
Map - Geological Compilation of the Kirkland Lake Area, Abitibi Greenstone Belt
Publication Number: P3425 Scale: 1:100,000 Date: 2000
Author: Ayer J.A., Trowell N.F.
Publisher Name: Ontario Geological Survey
Location:
Mono - Kimberlites of the Lake Timiskaming Structural Zone: Supplement
Publication Number: OFR6018 Date: 2000
Author: Sage R.P.
Publisher Name: Ontario Geological Survey
Location:
Book - PRESS RELEASE JULY 12, 2003
Publication Number: PR 07/03 Date: 2003
Author: Sudbury Contact Mines Limited
Publisher Name:
Location:
Book - PRESS RELEASE DECEMBER 9, 2003
Publication Number: PR 12/03 Date: 2003
Author: Sudbury Contact Mines Limited
Publisher Name:
Location:
Book - NORTHERN ONTARIO FIELD TRIP GUIDEBOOK, 8TH INTERNATIONAL KIMBERLITE CON., 45P.
Publication Number: 8 IKC Date: 2003
Author: Kjarsgaard, B.A. et al.
Publisher Name:
Location:
Book - TIMING OF EASTERN NORTH AMERICAN KIMBERLITE MAGMATISM:.., EPSL V. 178, P.253-268
Publication Number: EPSL 178 Date: 2000
Author: Heamna, L.M. and Kjarsgaard, B.A.
Publisher Name:
Location:
Publication - Geochemistry of groundwater from Jurassic kimberlites in the Kirkland Lake and Lake Timiskaming kimberlite fields, northeastern Ontario; Geological Survey of Canada, Open File 4515
Publication Number: GSC OF 4515 Date: 2003
Author: Sader, J A; Leybourne, M I; McClenaghan, M; Hamilton, S M
Publisher Name: Geological Survey of Canada
Location: https://doi.org/10.4095/214841
Book - PRESS RELEASE MAY 28, 2004
Publication Number: PR 05/04 Date: 2004
Author: Sudbury Contact Mines Limited
Publisher Name:
Location:
Publication - 95-2 Diamond Project, Timiskaming, Ontario, Canada, NI 43-101 Technical Report Mineral Resource
Publication Number: Date: 2012
Author: Lepine, I., Zhuk, V., Farrow, D.
Publisher Name: SEDAR
Location: Kirkland Lake RGP office
Data - Geological Compilation of the Abitibi Greenstone Belt
Publication Number: MRD143 Date: 2004
Author: Ayer J.A., Trowell N.F., Josey S.D.
Publisher Name: Ontario Geological Survey
Location:
Map - Geological Compilation of the Central Abitibi Greenstone Belt: Kapuskasing Structural Zone to the Quebec Border
Publication Number: P3565 Scale: 1:250,000 Date: 2005
Author: Ayer J.A., Berger B.R., Hall L.A.F., Houlé M.G., Johns G.W., Josey S.D., Madon Z.B., Rainsford D.R.B., Trowell N.F., Vaillancourt C.
Publisher Name: Ontario Geological Survey
Location:
Journal - The temproal evolution of North American kimberlites
Publication Number: Lithos 76 Date: 2004
Author: Heamans, L.M., Kjarsgaard, B.A. and Creaser, R.A.
Publisher Name: Lithos v.76, p.377-397
Location: Kirkland Lake RGP office
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