Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI42B02NW00001

Record: MDI42B02NW00001

General

Mineral Record Identification
Record Name(s)	Shawmere Anorthosite - 1993, Veldhuyzen Area #5 - 1993, Purchem Area 1 - 1993, Warren Township Anorthosite - 2002
Related Record Type	Simple
Related Record(s)
Record Status	Developed Prospect With Reported Reserves or Resources
Date Created	1999-Nov-18
Date Last Modified	2022-Nov-03
Created By
Revised By

Commodities

Primary Commodities: Aluminum, Silica, Feldspar (Nonmetals)

Location

Township or Area: Warren

Latitude: 48° 7' 56.48" Longitude: -82° 47' 18.93"

UTM Zone: 17 Easting: 366922.96 Northing: 5332558.12 UTM Datum: NAD83

Resident Geologist District: Timmins

NTS Grid: 42B02NW

Point Location Description: Outcrop/trenching adjacent to main haul road.

Location Method: Data Compilation

Access Description: Easy access is possible as the prospect is on the Warren-Carty main haul road which connects with highway 101 about 10 km east of the prospect. Timmins is approximately 120 km to th east along highway 101.

Exploration History

1992: Ontario Geological Survey - mapping and sampling. 1993-99: Purechem Ltd. - geological mapping, geochemistry, bulk sampling (8 tonnes), petrography, testing. 2001: Southern Africa Minerals Corporation - property purchased, bulk sample (915 kg), testing. 2002: Avalon Ventures Ltd. - Property acquisition (100% ownership) 2004: Avalon Ventures Ltd. - Bulk sample (10 tonnes of stockpiled ore) taken for mineral processing tests (T-5079) 2007: Avalon Ventures Ltd. - Bulk sample (1000 tonnes) sent for processing; resulting 460 ton product sample sent for furnace trials (Press releases, Feb. - Oct. 2007) 2006 - 2007 - Avalon Ventures Ltd: Bulk, Assays (T-5634 / 2.36138)

Assessment Work on File

Assessment Work on File
Office File Number	Online Assessment File Identifier	Online Assessment File Directory
T-5079 / 2.28568	42B02NW2003	42B02NW2003
T-5634 / 2.36138	20000002458	20000002458
T-3731, 2.16041	42B02NW0001	42B02NW0001
T-4442, 2.20399	42B02NW2001	42B02NW2001
T-4637, 2.22146	42B02NW2002	42B02NW2002

Geology

Province: Superior

Subprovince: Abitibi

Terrane: Wawa-Abitibi

Belt: Swayze

Geological Age: Archean Geochronological Age: 2454 MA Geochron. Age Ref.: OFR5919

Geology Comments

Dec 07, 2005 (A Wilson) - Compositional and structural patterns define four zones in the Shawmere Anorthosite Complex. There is a border zone of foliated garnetiferous amphibolites, a banded mafic and and anorthositic zone with know anorthosite horizons of 1 cm to 1 m width, and a more massive anorthosite zone and acoarse megacrystic gabbroic anorthosie to gabbro. Boundaries are transitional, with exposure contining more than one rock type. The Shawmere Anorthosite complex is hosted by the Kapuskasing Structural Zone.

Lithology

Lithology Data
Rock Type	Rank	Composition	Texture	Relationship
Anorthosite	1	Hornblende		Host

Lithology Comments

Dec 07, 2005 (A Wilson) - The rock is a very coarse-grained anorthosite with 1-4 mm grains and very locally, there are porphyroblasts up to 30 mm through more typical prophyroblasts are up to 10 mm in size. These prophyroblasts are very irregular, poikiloblastic and scattered throughout the rock. The grains in the matrix are equant and may be polygonized.

Mineralization

Mineralization and Alteration
Rank	Mineral Name	Class	Economic Mineral Type	Alteration Mineral Type	Alteration Ranking	Alteration Intensity	Alteration Style
1	Feldspar	Economic	Ore
1	Diopside	Economic	Gangue
2	Hematite	Economic	Gangue
3	Hypersthene	Economic	Gangue
4	Olivine	Economic	Gangue
5	Sphene	Economic	Gangue
6	Perovskite	Economic	Gangue
	Epidote	Alteration		Saussuritization	1	Weak	Veins

Mineralization Comments

Dec 07, 2005 (A Wilson) - Based on the anhydrous normative mineralogy, the rock varies between 19 and 29% albite, 66 and 78% Anorthite and less than 0.5% each for orthoclase and quartz. The plagioclase normative mineralogy appears to be bimodal at either extremes of the compositional range. Normative anhydrous mafic mineral from between 2 and 5% of the rock and consist of diopside, hematite, hypersthene, olivine, sphene and perovskite. One drill hole drilled by Purechem returned consistently good results of 30.92 wt% Al and 1.38 wt% Fe. Analysis conducted in 2001 returned Al2O3 values ranging from 31.2% to 32.0%. The +200 mesh returned an average value of 32.2% Al2O3.

Mineral Record Details

Classification
Rank	Classification
1	Magmatic
2	Metamorphic

Characteristics
Rank	Characteristic
1	Massive

Mineral Zones - Size and Shape

Rank: 1 Structure Type: None

Zone Name: Detour Lake - Rank 1
Shape	Length	Thickness	Depth	Strike	Dip	Plunge	Trend	Age	Reference
Irregular	300	100

Reserves or Resources Data
Zone	Year	Category	Tonnes	Reference	Comments	Commodities
Shawmere Anorthosite	2000	Unclassified	858504	Southern Africa Press Release August 2001	grade is expressed as St% Al	Anorthosite 30.92 Percent

References

Map - Chapleau-Foleyet, geological compilation series, Algoma, Cochrane and Sudbury districts

Publication Number: M2221 Scale: 1:253,440 Date: 1976

Author: Thurston P.C., Sage R.P., Siragusa G.M.

Publisher Name: Ontario Division of Mines

Location:

Mono - Aluminium Extraction from an Ontario Calcic Anorthosite by Acid Processes and Resultant Products - Aluminium Chemicals, Coatings, Fillers, Absorbent and Cement Additive

Publication Number: OFR5919 Page: 88-139 Date: 1995

Author: Veldhuyzen H.