Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI52F16NW00043

Record: MDI52F16NW00043

General

Commodities

Primary Commodities: Molybdenum

Location

Township or Area: Echo

Latitude: 49° 57' 2.03"    Longitude: -92° 21' 42.54"

UTM Zone: 15    Easting: 545783.41   Northing: 5533329.48    UTM Datum: NAD83

Resident Geologist District: Kenora

NTS Grid: 52F16NW

Point Location Description: Precise

Location Method: Conversion from MDI

Access Description: The property can be accessed via Kathlyn Lake Road, which originates 37 km southwest of Sioux Lookout along Highway 72. The property is about 9 km from Highway 72.

Exploration History

1946: Molybdenite occurrences are reported by the Ontario Dept of Mines at the east end of Lateral Lake. 1950: claims staked by G.L. Pidgeon of Wabigoon. 1954: claims optioned to Detta Minerals Ltd., who drilled 2 DDH totalling 107 m. A 35 m adit was driven to collect a 115 kg bulk sample. 1956: 2 DDH totalling 80 m drilled on the adjacent property held by A.O. Lantz. 1957: Pidgeon Molybdenum Mines Ltd. was incorporated to take over holdings of Pidgeon, Lantz, and Mid-North Engineering Services Ltd. to form a 21-claim block. 1957-58: Rio Tinto optioned the property from Pidgeon Moly and drilled 21 DDH totalling 2348 m. 1965-66: Rio Algomm completed a magnetometer survey and drilled 39 DDH totalling 3474 m .1979: Rio Algom reevaluated the property for a large tonnage, low grade open pit and staked 63 additional claims. 1979-80: Rio Algom conducted line cutting, IP, VLF and magnetic surveys, and drilled 27 DDH totalling 3710 m. 1981: Rio Algom drilled 3 DDH totalling 352 m. 2006: MPH Ventures entered into an agreement with Rio Algom to acquire the property. 2007-8: MPH conducted line cutting, a magnetometer survey, trenching and sampling, and drilled 47 DDH totalling 6224.2 m.

Assessment Work on File

Geology

Province: Superior

Subprovince: Wabigoon

Geological Age: Archean  

Geology Comments

Feb 09, 2011 (C Ravnaas) - The area surrounding Lateral Lake lies at the boundary of the Wabigoon sub-province and the English River subprovince (Page, 1984). It consists of a sequence of Archean mafic to intermediate metavolcanics and metasediments which have been metamorphosed to upper greenschist-lower amphibolite facies, and minor intrusive bodies, including the east-west trending Lateral Lake Stock. The stock has been described as a granodiorite with gradational contacts into quartz monzonite around the larger country rock inclusions. The stock forms a broad magnetic high with steeper gradients, suggesting steeper dips, along its southern side. There are also a series of local magnetic high in a belt around the edge of the intrusive, one of which corresponds to the mineralized contact zone on the Pidgeon Property. Aplitic sills of quartz monzonite and potassic feldspar-bearing pegmatites are concentrated towards the margins of the stock, and locally comprise up to 50% of the rock (Colvine and McCarter, 1977). The pegmatites contain quartz, potassic feldspar and muscovite and grade into quartz veins, and are best developed east of Lateral Lake. Both the pegmatites and aplitic rocks are generally associated with molybdenite occurrences. Veins of quartz, pegmatite and aplite are also common in the metavolcanic wallrocks. The stock also contains common altered xenoliths of supracrustal rocks. Reference: MPH Ventures Ltd. Technical Report on the Pidgeon Mo Deposit, Oct 2007.

Lithology

Lithology Comments

Feb 09, 2011 (C Ravnaas) - The bulk of the mineralization occurs in a shell near the periphery or margins of the monzonite stock where the quart vein stockwork also cuts across the aplitic dikes. The aplitic dikes run parallel with the regional foliation. Quartz veins that do not have potassic feldspar associated with it do not host mineralization. At the contact between the stock and the metavolcanics, the stock is intruded by aplitic sills and veins, and mineralization is associated with quartz, quartz-feldspar and feldspar veins forming a stockwork within the aplitic zone of the contact. The most widespread mineralization occurs within and proximal to the eastern periphery of the stock. The statistical grade distribution by rock type indicates that the aplite is the principal rock-type associated with molybdenite, and that there are two types of vines, one high grade with potassic feldspar, and one at very low grade, quartz-rich, post-mineralization Reference: MPH Ventures Ltd. Technical Report on the Pidgeon Mo Deposit, Oct 2007.

Mineralization

Mineralization Comments

Aug 27, 2015 (C Ravnaas) - The Pidgeon deposit has many characteristics of a porphyry-molybdenum-stockwork deposit. The pegmatitic rocks are demonstrably posttectonic, and that molybdenum mineralization is related to a more widespread pegmatite intrusive event and localization of molybdenite in structurally induced, tensional environments. Molybdenum mineralization consists of coarse molybdenite flakes and grains associated with quartz veining/stockworks, aplitic dykes, and quartz-feldspar pegmatite veins at the outer margin of the Lateral Lake Stock. On the MPH claim group the mineralized zone dips approximately 45° to the south over a strike length of about 1,300 metres with an average true thickness of 60 metres. Along the north margin, dips are as shallow as 30° to the north. At the Pidgeon Deposit there are several modes of molybdenite mineralization. 1. Euhedral grains with K-feldspar and green mica in pegmatites. 2. Rare euhedral grains in quartz veins. 3. Along comminuted vein margins. 4. Grains and rosettes isolated in wallrocks adjacent to pegmatite veins and quartz vein stockworks. 5. Narrow bands and lenses parallel to wall rock foliation. 6. Along fractures discordant to wall rock foliation. An inferred resource of 8.5 million tonnes at 0.099% molybdenum was calculated (with a 0.4% molybdenum cut-off) which is close to the historical estimate of 9.0 million tonnes at 0.097% molybdenum. Reference: MPH Ventures Ltd. Technical Report on the Pidgeon Mo Deposit, Oct 2007. DEPTH - GRADE - 1954: ADIT BULK SAMPLE - 0.24% MOS2 OVER 23.1 FT AND 0.57% MOS2 OVER 25.3 FT

Aug 27, 2015 (Therese Pettigrew) - In 2008, Busch (AFRI 20000004248) stripped and mapped a section of the deposit near the adit. His work revealed that there are 2 contemporaneous sets of quartz-feldspar veins, both flanked by zones of potassic alteration. The alteration halo is visible up to 1.5 m from the veins, and is dependent on the width of the veins. Aplites reported in earlier work appear in these altered zones as contact features adjacent to the veins. Molybdenite occurs as coarse clots along the veins margins, and as fine disseminations within the altered aplitic vein margins. The 2 vein systems have azimuths of about 110 degrees and 010 degrees. The 110 veins are larger and dip 45-60 degrees to the NE. The 010 set of veins dip NW at about70 degrees. The orientation of the veins does not appear to be related to the overall orientation of the mineralized zone. Highlights from the 2007-8 drill program are as follows: PM07-01: 011% Mo from 112.5-145 m, including 0.88% Mo from 112-113 and 1.2% Mo from 124-126 m; PM07-02: 0.12% Mo from 111.7-116.7 m; PM07-3: 0.32% Mo from 122.9-124.9 m and 0.37% Mo from 130.4-131.9 m; PM08-1: 0.60% Mo from 49.3-54.3 m; PM08-5: 0.3% Mo from 135.5-143 m; PM08-6: 0.101% Mo from 40.2-63.8 m and 0.29% Mo from 128.5-131 m; PM08-7: 0.108% Mo from 41.7-75.3 m; PMB-9: 0.172 Mo from 34.7-47.9 m; PM08-14: 0.178% Mo from 31.7-60.7; PM08-18: 0.377% Mo from 32.6-56 m; PM08-19: 0.163% from 39.8-68.1 m; PM08-20: 0.157% Mo from 12.8-31.4 m; PM08-21: 0.15% Mo from 60-61 m.

Mineral Record Details

Mineral Zones - Size and Shape

References

Publication - Pidgeon Molybdenum Project; National Instrument 43-101 Compliant Technical Report

Publication Number: 2012 43-101 Date: 2012

Author: Duke, C.

Publisher Name: MPG Ventures Corp.

Location: http://www.mphventurescorp.com

Book - Northern Miner 80-03-06, Rio Algom, p. D29

Publication Number: NMINER Date: 1996

Author:

Publisher Name: Northern Miner

Location:

Mono - Molybdenum deposits of Ontario

Publication Number: MDC007 Page: 38-39  Date: 1968

Author: Johnston F.J.

Publisher Name: Ontario Dept. of Mines

Location:

Map - Township of Echo, District of Kenora, Ontario

Publication Number: M1950-01 Scale: 1:12,000    Date: 1997

Author: Armstrong H.S., Webb J.K.

Publisher Name: Ontario Dept. of Mines

Location:

Map - Geological series, Lateral Lake area (east half), District of Kenora

Publication Number: P2372 Scale: 1:15,840    Date: 1980

Author: Page R.O., Christie B.J.

Publisher Name: Ontario Geological Survey

Location:

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For detailed information regarding this mineral record please contact the Kenora Resident Geologist District Office