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Globex Properties

Hematite Lake Deposit - Iron
Ungava Bay, Quebec (NTS 24C/10)

Map updated July 2015

Hematite claim map as at July 2015

Location 
The Hematite Lake property is located in Ungava Bay (NTS 24C/10) over 800 km north of Sept-Iles and approximately 180 km south of Kuujjuak.  The property consists of  67 map designated cells covering  3,176 ha.

Ownership 
The property is owned 100% by Globex Mining Enterprises Inc.  

History 
Prospection work in the Hematite Lake sector began in 1945 when Frobisher Limited organized an expedition to evaluate the mineral potential of the New Quebec region.  From 1947 to 1954 Fort Chimo Mines Limited explored an area stretching over 1000 miles2.  US Steel acquired the property in 1960 and carried out an economic evaluation.  They subsequently dropped the property in 1963.

In 1965 Denison Mines Limited staked 1500 claims in the area.  Watts, Griffis and McOuat Limited, subsequently, carried out exploration and evaluation work on Denison’s behalf in 1966.  Geological mapping defined a low grade iron (silica-hematite) formation and a 150 m thick magnetite formation in a well exposed, folded and faulted synclinal structure in the Hematite Lake sector.  The 1966 reserve calculation indicated 1,334,000 long tonnes with an average grade of 33.1% soluble iron, 25.2% magnetic iron and showed potential for a 67.66% soluble iron concentrate.  Additional reserves associated with the chert-magnetite member were calculated at 965,000 long tonnes with 33.12% soluble iron, 25.08% magnetic iron with potential for a 67.74% soluble iron concentrate.

In 1974 Quebec Ungava Mines Ltd staked 550 claims and carried out exploration and evaluation work through 1975 and 1976.  This work included a drilling program totalling 14.688 feet that defined three mineralized zones: the Main Zone, the Blackie Zone and the Hematite Lake zone.  Reserves were calculated at 200 million tonnes of raw material grading 22.3% magnetic iron in the Main Zone and 200 million tonnes of raw material grading 24.2% magnetic iron in the Blackie Zone.  No reserves were calculated for the Hematite Lake zone due to lack of data, however the chert-metallic member showed positive metallurgy in that sector.  Samples from the Hematite Lake sector showed soluble iron concentration went from 28-31% in raw material to 67% in a concentrate obtained by magnetic separation.

From 1977-1983 metallurgical studies were carried out on bulk samples from the three main zones.  The results showed between 68% and 70% soluble iron in concentrates obtained by magnetic separation.

Regional Geology 
The north trending Labrador Trough stretches continuously from the Grenville Front at Wabush (53oN, 67oW) to Robert Lake close to the Hudson Straight (61oN, 71oW).  It is divided into two continuous litho-tectonic zones that are developed over the entire length of the trough.  The western portion mainly consists of sedimentary rocks whereas the eastern portion consists of predominantly mafic volcanic rocks.  Both these zones are underlain by Archean granites and gneisses.

Local Geology
The Hematite Lake property is located on the eastern limb of the Cambrian Lake syncline.  This syncline is over 5km long and is parallel to the Labrador Trough, its main axis runs approximately 3 km west of Hematite Lake.

The Hematite Lake Area is divided into three mineralized sectors: the Hematite Lake and Blackie Lake sectors lie south-west and west of Hematite Lake respectively; the Main Zone lies in the December Lake area. The Hematite Lake property currently held by Globex covers part of the Blackie Lake South and Hematite Lake South sectors.  Table 1 shows historical reserve calculations for those two sectors (see below), those reserve calculations are not 43-101 compliant and have not been confirmed by Globex geologists. 

The oldest rocks on the property are part of the Ashuanipi Complex and consist of pink coarse grained granite and pink sheared granite.  The Ashuanipi Complex is unconformably overlain by the Kaniapiskau Supergroup, namely the Knob Lake Group.  While the Knob Lake Group includes several sub-groups and formations, only that of the Ferriman sub-group is found in the area of the property.  The complete stratigraphic sequence of the Ferriman sub-group includes quartzite (Wishart formation), mudstone (Ruth formation), iron formations (Sokoman formation) and slate (Menihek formation). 

Post-Kaniapiskau carbonate-serpentine intrusions and carbonate breccias are also present in the Blackie and Hematite Lake sectors.

Historically, the chert-magnetite member of the Sokoman formation has shown the greatest economic potential on the property.  It mainly consists of chert and aphanitic magnetite with lesser hematite and carbonate.  The chert-magnetite member is weakly to strongly magnetic with 30-35% soluble iron and 20-26% magnetic iron.

The chert-metallic member is also of economic interest, particularly in the Hematite Lake sector.  It is essentially composed of magnetite and blue hematite, laminated with jasper beds and lenses.  The chert-metallic member is approximately 90 m (300 Ft) thick with a highly variable magnetite content.

Year Location Tonnage
(long tonnes)
Grade (%) Concentrate
(magnetic separation)
1966
(GM 20031)
    Fe (Sol) Fe (Mag) % Fe (Sol)
Blackie Lake South
(At surface or interpreted at surface)
182 000 000 31.70 25.3 68.15
Blackie Lake South (Overlain by 37m of rock at most) 109 000 000 31.70 25.3 68.15
Blackie  Lake South Total 291 000 000 31.70 25.3 68.15
Hematite Lake South
(At surface or interpreted at surface)
87 000 000 34.51 25.96 68.5
Hematite Lake
(Overlain by 37 m of rock at most)
89 000 000 34.51 25.96 68.5
Hematite Lake
Total
176 000 000 34.51 25.96 68.5
1977
(GM 33386)
Blackie Lake 200 000 000 32.1 24.2 70.0
Hematite Lake No calculation due to lack of data

Conclusion 
Known mineralization on the Hematite Lake property is mainly hosted in the chert-magnetite member of the Sokoman formation and is comparable to the taconites of Mesabi Range in north-west Minnesota.  Metallurgical tests demonstrated that grades in the order of 30-33% soluble iron in raw samples increase as high as +68% soluble iron in a concentrate obtained by magnetic separation.

Historical work has been focused on the Main Zone.  Few drill holes targeted the Blackie and Hematite zones and the chert-metallic member was not considered in reserve calculations.  The presence of both mineralized units (chert-magnetite and chert-metallic) in the Blackie and Hematite zones makes them potential targets for future exploration work.

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Press releases related to this property

May 31, 2011
Globex’s Ungava Area Iron Project Optioned to Canamara
(English) | (Français) | (Deutsch) |


Partner News related to this property

October 15, 2012
Cleghorn Minerals Ltd. plans to acquire Hematite Lake
(English)

 
 
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