Doza
Location, Access, Description
The Doza property is composed of 22 contiguous mining claims covering an area of 1,230.06 hectares located in the Township of Vezza in Abitibi (NTS: 32F12). The property is located about 160 kilometres north of the town of Val-d’Or and 31 kilometres southwest of the town of Matagami. The claims are wholly owned by Globex and are not subject to any underlying royalties or third party interests.
The topography is sparsely marked and consists of rolling hills (Cartwright Hills), with elevations comprised between 260m and 280m above sea level. Several streams, rivers and wetlands can be observed on the property. The northern half of the property seems to be swampier than the southern half.
The property is easily accessible via Highway 109 which connects Amos and Matagami. At Km190.5 one takes a forest road heading south to access to the property. Numerous exploration trails allow one to easily navigate in vehicle throughout the property.
Geology and Mineralization
The Doza property is located in the Archean Greenstone Belt of the Abitibi Sub-province, in the Superior Province of the Canadian Shield. It’s more precisely located in the central-western part of the Northern Volcanic Zone of Abitibi (ZVN), within the Harricana-Turgeon Furrow (SHT) as defined by Lacroix et al., 1989 (PRO89-04). The SHT is composed of felsic to ultramafic metavolcanics intercalated with metasedimentary rocks of Matagami and Taïbi Groups in the northern contact of the Marest Batholith. They have a sub-vertical dip and peaks facing north according to Dussault, 1990 (MB90-43). The Marest Batholith is a pre- to syntectonic intrusion composed of foliated and locally porphyritic quartz-diorite and granodiorite (PRO89-04). Regional metamorphism is at the greenschists grade.
Intrusive rocks like the MacIvor, Cavelier, and Marest Plutos cover more than 40% of the SHT area. They belong to various plutonic sequences that can be assigned to four structural classes: pretectonic, pre- to early syntectonic, syn- to late tectonic and late- to post-tectonic (PRO89-04). The Bell River Complex is a stratified gabbro-anorthosite complex located about 20 km NE of the Cavelier property, and associated with numerous base metals (Ni, Cu, Zn, Fe, V) deposits.
In the area of the Doza property, the SHT consists of two (2) distinct lithotectonic domains corresponding, from north to south, to the detrital sediments of the Taibi Group and the Cartwright Hills volcanics (southern volcanics of Dussault, 1990). The Taïbi Group is composed of a homoclinal sequence of clastic sediments (sandstone, siltstone, mudstone, grauwacke and argillites) and limited iron formations and conglomerates. The Cartwright Hills Group essentially consists of pillowed and massive andesitic basalt locally porphyritic which follows the northern limit of the Marest Batholith (PRO89-04, MB90-43, GM56429).
The major regional structural feature observed in the area is the Cameron Deformation Corridor (CDC) which is characterized by a series of anastomosed E-W shear zones that extend on more than 150 kilometres east and west of the Rivière Allard property. The CDC is 1-5 km wide and roughly corresponds to a graphitic band within Taïbi sediments, right north of the Cartwright Hills volcanics. The CDC hosts both Douay (Indicated Resources of 10.0 Mt @ 1.59 g/t Au – Gosselin et al., 2022 – Technical Report NI 43-101) and Vezza (Indicated Resources of 586 070t @ 6.3 g/t Au; Measured Resources of 658 780t @ 6.5 g/t Au – D’Amours et al., 2013 – Technical Report NI 43-101) deposits and therefore represents the best regional metallotect for gold and base metals mineralization.
Mineralized deposits of the SHT are either of polymetallic or gold types. Known showings and deposits are primarily found within the CDC and around Banded Iron Formations of the Taïbi Group. Numerous input anomalies are present along the CDC, including on the Doza property. A second E-W shear zone is also mapped in the northern part of the Doza property.
Geological context of the Doza property is quite the same than observed on the Vezza deposit. The Vezza Deposit (Indicated Resources of 586 070t @ 6.3 g/t Au; Measured Resources of 658 780t @ 6.5 g/t Au; Inferred Resources of 435 830t @ 4.9 g/t Au – D’Amours et al., 2013 – Technical Report NI 43-101) is located approximately 9km east of the Doza property. The mineralization of the Vezza deposit is composed of 1 to 10% pyrite and 1 to 10% pyrrhotite, sphalerite and chalcopyrite within quartz veins and veinlets, hosted in a highly brecciated and sheared sandstone horizon. This deposit is characterized by intense iron carbonate alteration (siderite, ankerite, dolomite), low silicification, and low to moderate sericitization (GM56429). Local strong epidotization is observed giving mafic volcanics a bleached appearance.
History
Mining exploration around the Doza Property began in 1957 when East Sullivan Mines Limited conducted both airborne and ground magnetic (Mag) and electromagnetic (EM) surveys (GM 06248). Some EM anomalies were detected then a 5 holes (557 meters) DDH program was planned by Claims Berthiaume in order to test the best anomalies. 3 of these holes are located within the boundaries of Globex’s property (GM-017719-B and C). No significant gold grades were intersected.
Exploration works continued sporadically between 1957 and 1999 (the year of the last recorded work on the property). Most of the exploration work on the Doza property was done during the 1980s and 1990s. Thus, several magnetic and electromagnetic, airborne and/or ground surveys as well as some Induced Polarization (IP) surveys and eleven (11) DDH holes totalling 2,006 meters were undertaken by numerous exploration companies among which Esso Minerals Canada, Explorations Noramco Inc., North American Rare Metals Ltd., Agnico Eagle Mines Ltd. and SOQUEM.
Details of historical works listed in public data are given in Rioux, 2020 (GM72211)
Resources and Potential
The Doza property benefits of a privileged location along the prolific Cameron Deformation Corridor (CDC) that host most of the regional gold (Au) deposits and some base metals showings. The geological and metallogenic context observed on the property are similar to the Vezza deposit (Indicated Resources of 586 070t @ 6.3 g/t Au) located 9km to the east, with strong carbonate alteration associated with some silicification and sericitization and moderate to strong sulphide content.
A thick overburden covers the rocks of that area, meaning that most of exploration work has to be done using indirect methods and that the geology of this area is still poorly understood so that numerous discoveries can still be made.
The existence of numerous Input anomalies along the CDC is due to either graphitic horizons and strong sulphide contents. Compilation work by Rioux in 2020 suggests that the Doza property was not properly covered by historical IP surveys. The ½ south of the property shall therefore be covered with new IP surveys in order to identify local sulphide concentrations.
The presence of secondary faults generally oriented NE-SW can be deduced with magnetic and electromagnetic surveys (MB90-43). As orogenic gold is frequently concentrated into secondary structures secant to the regional primary structures (Vezza, Douay deposits), a Very-high Resolution Mag Survey should be carried-out in order to identify if such secondary structures are present on the Doza property. Best exploration targets on the Doza property would be marked by IP / EM anomalies along secondary structures.
Channel sampling should be considered on every IP anomaly in order to observe alterations, mineralization and structural directions before panning DDH.