Silver Tower
Location, Access, Description
The Silver Tower property consists of 10 mining claims totalling 366 Ha in Scott township, approximately 20 km southwest from the town of Chibougamau (Eeyou-Istchee Baie-James, Qc). The claims are wholly owned by Globex and are not subject to any underlying royalties or third party interests.
Topography is quite flat and swampy on the Silver Tower property. Half of the property is covered with boreal forest vegetation, the other half is flooded by both Scott lake and Chibougamau River. A lot of outcrops are exposed on the river and lake shores.
Access to the property is possible by road thanks to the old exploration trail leading to the Silver Tower showing. Access by boat is however more practical.
Geology and Mineralization
The Silver Tower property is located in the northern part of the Archean Abitibi Greenstone Belt, within the Superior Province of the Canadian Shield. Rocks of this area are composed of gabbroic to tonalitic intrusions of the polyphased Chibougamau Pluton and elder mafic to ultramafic (UM) intrusions of the layered Lac Doré Complex. These intrusions are surrounded by a belt of felsic to mafic volcanic rocks which have been verticalized after successive tectonic events during Archean and Paleoproterozoic and metamorphosed to the greenschists facies.
The Chibougamau-Chapais mining camp historically produced a total of 47,5 Mt @ 1,72 % Cu and 2,3g/t Au, that’s to say 1,6 Glbs Cu and 3,2 Moz Au between 1955 and 1997. Numerous gold (Au) and base metals (Cu, Zn, Ag) showings associated with volcanogenic sulfides are listed in the property area. Most of them are due to hydrothermal remobilization of volcanogenic sulfides in competent rocks of the Chibougamau Pluton.
The Silver Tower property hosts the Silver Tower Mines showing (or Rapids showing) on which assays up to 48 g/t Au, 123,4 g/t Ag, 2,2 % Cu and 22,66 g/t Au, 7,6 g/t Ag, 0,25 % Cu, 2,28 % Zn have been historically reported on grab samples. Mineralization is composed of 2 to 20% of pyrite, chalcopyrite, malachite, sphalerite and galena, hosted by a N140° quartz-carbonate vein dipping -30° to -60° within a N320° sericitized shear zone within the Chibougamau tonalite.
History
Discovery of the Silver Tower Mines showing in prospection dates from 1935 when a grab sample taken by McKay Exploration Syndicate returned 31,19 g/t Au, 1,46 % Cu, 5,62 % Zn et 0,72 % Pb (GM 10840-D). Numerous geophysical surveys including magnetism, electromagnetism (EM) and induced polarization (IP) have been undertaken during the following decades, as well as trenching and diamond drilling (GM 62244). DDH assays by SOQUEM in 2005 were deceiving and no more work was then planned on the property.
In 2021, Globex conducted a geological mapping and sampling program on the Silver Tower property. Grab samples from the showing trench graded up to 19,03 g/t Au, 17 g/t Ag, 1,41 % Cu and 2,33 % Zn. A N-S quartz-carbonate vein located 600m WSW from the showing returned metallic anomalies of 1,03 g/t Au, 5,00 g/t Ag and 1,00 % Cu, which defines a new Au-Cu showing associated with late sulphide remobilization (GM 72405).
Resources and Potential
No resource has ever been estimated on the Silver Tower property.
According to historical works, essentially those by SOQUEM in 2005, the economic potential of the Silver Tower Mines showing seems to be limited. However, the quick sampling program conducted by Globex in 2021 led to the discovery of a new gold and base metals showing on the Silver Tower property, which confirms that this area still holds an underestimated potential and that further exploration is needed.
A high-resolution NOVATEM magnetic survey could help in highlighting structural features that could have remobilized metallic fluids and accumulated mineralization.