Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI42E12NE00036

Record: MDI42E12NE00036

General

Commodities

Primary Commodities: Gold

Secondary Commodities: Silver

Location

Township or Area: Leopard Lake Area

Latitude: 49° 38' 5.95"    Longitude: -87° 37' 28.15"

UTM Zone: 16    Easting: 454907.073   Northing: 5498235.277    UTM Datum: NAD83

Resident Geologist District: Thunder Bay North

NTS Grid: 42E12NE

Point Location Description: Centre of trench #14

Location Method: Field Visit with GPS

Access Description: Access is gained by proceeding 7 km east of Jellicoe on Highway 11, then traveling south on the Leopard Lake Road for 20 km to a timber access road. Follow this second access road to the west for almost 5 km to a northeast road and proceed for just over 5 km on this third road. It is advisable to proceed on foot or ATV at this point by following a fourth access road to the northeast for 500m and then an ATV trail for 1.2 km to the #3 post of claim TB1208513.

Exploration History

A six unit claim (TB1208513) was staked for Lyle Holt in February of 1995. Initial interest in the area was stimulated by the quartz veins and porphyry dikes depicted on map 37k by G. B. Langford. Langford reported: The claims in these groups are on McKenzie lake, and the chief showings are on claim TB5734, south of the lake. This claim is entirely underlain by Timiskaming sediments, which have been cut by numerous Algoman quartz porphyry dikes. Fracture zones occur in the sediments, in which quartz veinlets have been intruded to form quartzose bands, 8 to 10 feet wide. These bands contain pyrite, arsenopyrite, galena, and native gold. The shear zones here strike a few degrees south of east, in contrast to the mineralized zones and veins in the greenstone, all of which strike a few degrees north of east. Claim records show that claim TB5734 was transferred from Mrs. Kate Jarvela to Mr. McKenzie in 1927. Mr. McKenzie filed Mining Operation Permits from 1927 to 1934 and the claim was cancelled in 1937. More recent exploration includes airborne magnetic and electromagnetic surveys in 1988 by Nolan Cox and Lyle Holt (AFO # 2.11783), prospecting by Lyle Holt and ground geophysical surveys in 1997. Under OPAP98-364 Lyle and Mona Holt and Fred Checkley (OPAP98-195) completed a bedrock stripping program over the two old trenches in the southwest portion of the property (trenches 7 - 23) and deep overburden test trenches (trenches 1 - 6, 24 and 25) across the north of claim 1208513.

Assessment Work on File

Geology

Province: Superior

Subprovince: Wabigoon

Terrane: Eastern Wabigoon

Belt: Beardmore-Geraldton

Geological Age: Archean  

Geology Comments

Dec 07, 2005 (Mark O'Brien) - The Clist Lake Property is located in the Southern Metavolcanic sub-belt, a portion of the Beardmore-Geraldton belt. As such, the property is underlain by a sequence of mafic metavolcanic rocks (tuffaceous and pillowed as reported by Carter, 1985) in the north one-third and predominantly metasedimentary rocks in the south two-thirds. These rocks are cut by quartz-feldspar porphyry dikes in the west central portion of the property and by hornblende porphyry dike/sill (a metagabbro as reported by Carter, 1985 or the coarser grained centre of the mafic metavolcanic flow) in the northeast portion of the property. Distinct units of mafic to intermediate metavolcanic rocks intercalate with the metasedimentary rocks in the area of the main zone between trench 16 in the west and trench 21 in the east. This intercalation is similar to that illustrated by a mafic metavolcanic unit to the east of the property on map 37k. On an outcrop scale it is expressed by a change in lithology from fine-grained tuffs to chlorite schist to a sheared greywacke progressing for 7m from north to south in trench #14. Graphitic horizons have been uncovered in the trenches in the north portion of the property. A tremolite carbonate schist from float near trench #5 was sampled and returned slightly anomalous values in copper and zinc. Foliation and bedding in the vicinity of the main zone varies from 090 in the east to 080 in the west while mineralized zones appear consistent at 080.

Lithology

Lithology Comments

Dec 07, 2005 (Mark O'Brien) - fine grained tuffs and greywacke schists (chlorite/sericite schist) with quartz-calcite vienlets and 1-3% disseminated euhedral fine grained pyrite and ~1%disseminated arsenopyrite and chalcopyrite.

Assay Samples

Mineral Record Details

Mineral Zones - Size and Shape

Site Visit Information

Date: Sep 20, 2000

Geologist: Mark O'Brien

Notes: The Clist Lake Property was visited on July 22, 1998 by Mark O'Brien and Alison Walden accompanied by Lyle Holt. Seven samples (98MCL-1 to 98MCL-7) were taken for analysis from trenches 5, 10, 14, 18 and 19. John Mason and Gerry White visited the property in August of 1998 at which time eight additional samples (98MCL-8 to 98MCL-15) were collected from new stripped areas.

References

Map - Beardmore-Nezah gold area, District of Thunder Bay, Ontario

Publication Number: ARM37K Scale: 1:63,360    Date: 1998

Author: Langford G.B.

Publisher Name: Ontario Dept. of Mines

Location:

Part - Geology of the Beardmore-Nezah gold area, District of Thunder Bay

Publication Number: ARV37-04.003 Date: 1998

Author: Langford G.B.

Publisher Name: Ontario Dept. of Mines

Location:

Map - Geological series, Precambrian geology, Vincent Township, District of Thunder Bay

Publication Number: P2854 Scale: 1:15,840    Date: 1985

Author: Carter M.W.

Publisher Name: Ontario Geological Survey

Location:

MonoMap - Geology of McComber and Vincent townships, District of Thunder Bay

Publication Number: OFR5648 Date: 1987

Author: Carter M.W.

Publisher Name: Ontario Geological Survey

Location:

Map - Tashota-Geraldton sheet, geological compilation series, Thunder Bay and Cochrane districts

Publication Number: M2102 Date: 1997

Author: Pye E.G., Harris F.R., Fenwick K.G., Baillie J.

Publisher Name: Ontario Dept. of Mines

Location:

Mono - Report of Activities 1998, Resident Geologist Program, Thunder Bay North Regional Resident Geologist Report: Thunder Bay North and Sioux Lookout Districts

Publication Number: OFR5988 Page: 13  Date: 1999

Author: Mason J.K., Seim G.Wm., White G.D., O'Brien M.S., Farrow D.G., Walden A., Komar C.L.

Publisher Name: Ontario Geological Survey

Location:

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For detailed information regarding this mineral record please contact the Thunder Bay North Resident Geologist District Office