Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI000000000912

Record: MDI000000000912

General

Commodities

Primary Commodities: Zinc, Copper, Lead, Silver

Secondary Commodities: Molybdenum

Location

Township or Area: BMA 533 863

Latitude: 53° 15' 36.08"    Longitude: -86° 39' 40.33"

UTM Zone: 16    Easting: 522600   Northing: 5901250    UTM Datum: NAD83

Resident Geologist District: Thunder Bay North

NTS Grid: 43E07SE

Point Location Description: Located with GPS; surface projection of drill hole 5.01-44. Zone extends 200m in N/S direction.

Location Method: Based on Assessment

Access Description: Access is remote in James Bay Lowlands. Drill sites accessible by helicopter and camps (Oval and Richards Lake) serviced by fixed wing float or ski planes.

Exploration History

2007: claims staked by Metalex Ventures Ltd. 2008: In March, Metalex entered into a farm-in agreement with White Pine Resources. By mid-2008, an aggressive exploration program was underway. An airborne helicopter magnetic and electromagnetic geophysical survey was completed over most of the joint venture's claims. Ground geophysical studies over anomalies identified on the airborne survey have been conducted and 21 electromagnetic anomalies with a sympathetic magnetic response have been identified, as well as 19 with just electromagnetic anomalies. Drilling commenced on the targets that have been refined by ground geophysics in mid-May 2008. Anomaly number 5.01 was the first tested and several holes have intersected significant widths of sulphide mineralization. The best intercept to date is in hole number six which intersected 95 meters of semi-to-near-massive sulphides from 72.7 meters. Visible copper, zinc, lead and iron sulphide mineralization is typical of the deposit. To date (Oct 2010) 42 holes totaling 10,785.9 meters have been drilled on the 5.01 project.

Assessment Work on File

Geology

Province: Superior

Subprovince: Sachigo

Terrane: North Caribou

Geological Age: Archean  

Geology Comments

Oct 28, 2010 (N Bennett) - The James Bay Lowland Property is located in the Archean-aged Superior Province of Northern Ontario, which has been stable tectonically since ca. 2.6 Ga and represents the core of the Canadian Shield. It is divided into distinct subprovinces based on lithology, structure, tectonic and metamorphic conditions. The present amalgamation of these subprovinces is thought to be a collection of small Mesoarchean continental fragments and Neoarchean oceanic plates which have been aggregated during a series of accretionary processes spanning ~40 Ma through five separate accretionary orogenic events (Percival et al., 2006). This initially resulted in a tectonic regime dominantly north-verging in the southern half of the province and south-verging in the far north. This regime then became a dextral transgressive regime that led to the formation of large E-W trending strike-slip faults (Davis, 2003). Post-tectonic granitic magmatism spans the period 2.68-2.64 Ga, and deep crustal high-grade metamorphism is recorded at 2.66-2.62 Ga (Helmstaedt and Harrap, 2000). The resulting terrane distribution is that of large-scale east-west trending belts of alternating granite-greenstone and metasedimentary subprovinces. Alternate theories based on cross-terrane lithologic overlaps suggest that the present terrane distribution may represent the effect of late differential uplift of a complexly layered accretionary complex (Davis, 2003). The James Bay Lowland claim blocks lie within the subprovince known as the Sachigo Superterrane. The Sachigo Superterrane is composed of old plutonic rocks of the ~3.0 Ga North Caribou Terrane that may have acted as a protocontinental nucleus around which other terranes accreted during assembly of the Superior Province (Percival et al., 2006). Early (2.98-2.85 Ga) minor mafic to ultramafic rocks associated with the North Caribou Terrane have been interpreted as mainly platformal or rift-type sequences (Percival et al., 2006), with a later (2.85-2.71 Ga) contribution of arc-related material. Continental arc magmatism caused severe reworking at 2.75-2.70 Ga (Percival and Easton, 2007). Central portions of the Terrane underwent plutonic intrusion (2.74-2.70 Ga), remnants of which are caught up and preserved in younger magmatism. Overall, the North Caribou terrane was reworked sporadically over a 300 Ma period.

Lithology

Mineralization

Mineralization Comments

Oct 28, 2010 (N Bennett) - • DDH5.01-06 from 65-167m downhole for a length of 102m averaging 6.5% Zn, 0.44% Cu, 0.19% Pb, and 3 g/t Ag. Included within this section, from 99.7-125.7m, for a length of 26m, the zone averaged 13.8% Zn, 0.50% Cu, 0.05%Pb, and 2 g/t Ag. • DDH5.01-14 from 83.0-120.0m downhole for a length of 37.0m, averaging 6.0% Zn, 0.34% Cu, 0.05% Pb and 6 g/t Ag. Included in this section, from 103.0-111.0m, for a length of 8m, the zone averaged 17.4% Zn, 0.24% Cu, 0.04% Pb and 5 g/t Ag. • DDH5.01-15 from 158.8-184.2m downhole, for a length of 25.4m, averaging 7.6% Zn, 0.35% Cu, 0.36% Pb, and 8 g/t Ag. • DDH5.01-16 from 167.4-186.7m downhole, for a length of 19.3m, averaging 10.0% Zn, 0.10% Cu, 1.85% Pb, and 41.5 g/t Ag. • DDH5.01-20 from 73.7-84.1m downhole, for a length of 10.4m, averaging 6.65% Zn, 0.24% Cu, 0.15% Pb, and 3.9 g/t Ag • DDH5.01-29 from 127.4-148.1m downhole, for a length of 20.7m, averaging 6.35% Zn, 0.22% Cu, 0.19% Pb, and 9.5 g/t Ag • DDH5.01-32 from 204.3-230.5m downhole, for a length of 26.2m, averaging 4.65% Zn, 0.26% Cu, 0.03% Pb, and 4.6 g/t Ag The high grade Zn-Cu-Pb-Ag mineralized zone has been delineated over a north-south strike length of 200m and to a vertical depth of 275m from surface. The zone dips steeply at 75 degrees to the east and appears to have a steep 65 degree plunge to the south. Horizontal widths of the high grade zone can reach up to 22m.

Jul 29, 2014 (Therese Pettigrew) - DDH 5.01-14 had Zn values >30% in a heavily mineralized chloritic schist from 109.8-111 m. Mineralization is typically comingled Po, Py and sphalerite with only minor chalcopyrite and minor lead.

Mineral Record Details

Mineral Zones - Size and Shape

References

Map - Proterozoic Mafic (Diabase) Dikes and Other Post-Archean Intrusions of Northwestern Ontario, North of Latitude 49° 30'

Publication Number: P3606 Scale: 1:1,000,000    Date: 2009

Author: Stott G.M., Josey S.D.

Publisher Name: Ontario Geological Survey

Location:

Publication - Metalex Website

Publication Number: Date:

Author:

Publisher Name:

Location: http://www.metalexventures.com/html/jame

Map - Geological series, Operation Winisk Lake, Winiskisis Channel, District of Kenora (Patricia Portion)

Publication Number: P0714 Scale: 1:126,720    Date: 1997

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

Publisher Name: Ontario Dept. of Mines and Northern Affairs

Location:

Map - Precambrian Geology of the Hudson Bay and James Bay Lowlands Region Interpreted from Aeromagnetic Data-East Sheet

Publication Number: P3598-REV Scale: 1:500,000    Date: 2008

Author: Stott G.M.

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