The TGB contains massive banded iron formations and several precious metal and base metal deposits.
The banded iron formations range from 1 m (3.3 ft) to 2 m (6.6 ft) to more than 150 m (490 ft) thick.
Remnants of volcanic vents are an important locator for mineral potential in the Temagami belt because they are adjacent to rocks that contain certain types of mineralization.
At the Link Lake Formation, good evidence for copper-zinc massive sulfide deposits has been discovered in associated volcanic rocks.
Some gold mineralization may also be associated with volcanic vents.
Studies of greenstone terranes in the Superior craton have shown that large gold deposits are associated with regional deformation zones.
Therefore, the Northeast Arm Deformation Zone, the Link Lake Shear Zone and the Net Lake-Vermilion Lake Deformation Zone are obvious high potential areas.
A number of scattered pyrite deposits can be found throughout the Northeast Arm Deformation Zone.
The high frequency of gold mineralization in and near the Net Lake-Vermilion Lake Deformation Zone suggests that this deformation zone may very well also contain gold deposits; at least 11 have been discovered within a 4 km (2.5 mi) length of the deformation zone.
The gold deposits are found in many rock types, indicating a stronger gold-bearing system with the potential of larger gold deposits.
A number of gold-pyrite deposits exist in felsic volcanic rocks overlying the Older Volcanic Complex, near and on the northwestern part of the Net Lake-Vermilion Lake Deformation Zone.
These deposits were likely formed during the creation of the Net Lake-Vermilion Lake Deformation Zone.
At the Younger Volcanic Complex, gold exists in quartz veins containing base metal sulfides.
It is also known to exist in pyrite associated with deformed magnetite-rich iron formations, sericitized and carbonatized felsic volcanic rock, quartz-pyrrhotite-chalcopyrite-pentlandite-pyrite zones within deformation zones and in north-trending, chloritized shear zones containing arsenopyrite, pyrrhotite, pyrite and chalcopyrite.

A variety of iron, copper, arsenic and zinc ores such as arsenopyrite, pyrrhotite, pyrite and chalcopyrite with sphalerite, are present as small veins and in quartz veins throughout north-trending shear zones that cut the iron-rich tholeiitic basalts of the Arsenic Lake Formation.
Dikes composed of quartz-feldspar porphyry run parallel to or lie within the shear zones and are cut by the mineralization.
Chalcopyrite occupies later fractures which intersect massive arsenopyrite.
Sparse quartz veins normally exist in or adjacent to the arsenopyrite-rich zones.
Several northeast-trending deformation zones intersect pyroxenite of a mafic sill in northwest Strathy Township.
Within these high-strain zones quartz veins normally contain chalcopyrite, pyrite, pyrrhotite with exsolved pentlandite and traces of sphalerite and galena.
Chalcopyrite, pyrrhotite and pentlandite are deposited throughout shear zones which lack quartz veining.
These zones are not known to contain large amounts of gold, although investigations are incomplete.
It is also unknown if platinum group metals (which include platinum, palladium, rhodium, iridium, osmium and ruthenium) exist in these zones because no searches for platinum group elements have been undertaken.

Gold and copper values occupy a northeast-trending iron formation within the Net Lake-Vermilion Lake Deformation Zone.
This mineralization is only known to exist southeast of Cooke Lake and immediately south of Net Lake.
A unit of chert, magnetite and pyrrhotite outcrops along the southwest shore of Net Lake at Temagami North.
Pyrrhotite, the most common sulfide mineral, occurs as small veins and disseminations.
Small amounts of pyrite, sphalerite and exsolved pentlandite and chalcopyrite are present with the pyrrhotite.
The main exposure lies immediately south of the Kanichee Mine Road, which branches off Highway 11.
Minor gold and copper values constitute this zone.
This sulfide-bearing unit is located within felsic volcanic rocks of the Older Volca
The TGB contains massive banded iron formations and several precious metal and base metal deposits. The banded iron formations range from 1 m (3.3 ft) to 2 m (6.6 ft) to more than 150 m (490 ft) thick. Remnants of volcanic vents are an important locator for mineral potential in the Temagami belt because they are adjacent to rocks that contain certain types of mineralization. At the Link Lake Formation, good evidence for copper-zinc massive sulfide deposits has been discovered in associated volcanic rocks. Some gold mineralization may also be associated with volcanic vents. Studies of greenstone terranes in the Superior craton have shown that large gold deposits are associated with regional deformation zones. Therefore, the Northeast Arm Deformation Zone, the Link Lake Shear Zone and the Net Lake-Vermilion Lake Deformation Zone are obvious high potential areas. A number of scattered pyrite deposits can be found throughout the Northeast Arm Deformation Zone. The high frequency of gold mineralization in and near the Net Lake-Vermilion Lake Deformation Zone suggests that this deformation zone may very well also contain gold deposits; at least 11 have been discovered within a 4 km (2.5 mi) length of the deformation zone. The gold deposits are found in many rock types, indicating a stronger gold-bearing system with the potential of larger gold deposits. A number of gold-pyrite deposits exist in felsic volcanic rocks overlying the Older Volcanic Complex, near and on the northwestern part of the Net Lake-Vermilion Lake Deformation Zone. These deposits were likely formed during the creation of the Net Lake-Vermilion Lake Deformation Zone. At the Younger Volcanic Complex, gold exists in quartz veins containing base metal sulfides. It is also known to exist in pyrite associated with deformed magnetite-rich iron formations, sericitized and carbonatized felsic volcanic rock, quartz-pyrrhotite-chalcopyrite-pentlandite-pyrite zones within deformation zones and in north-trending, chloritized shear zones containing arsenopyrite, pyrrhotite, pyrite and chalcopyrite.
A variety of iron, copper, arsenic and zinc ores such as arsenopyrite, pyrrhotite, pyrite and chalcopyrite with sphalerite, are present as small veins and in quartz veins throughout north-trending shear zones that cut the iron-rich tholeiitic basalts of the Arsenic Lake Formation. Dikes composed of quartz-feldspar porphyry run parallel to or lie within the shear zones and are cut by the mineralization. Chalcopyrite occupies later fractures which intersect massive arsenopyrite. Sparse quartz veins normally exist in or adjacent to the arsenopyrite-rich zones. Several northeast-trending deformation zones intersect pyroxenite of a mafic sill in northwest Strathy Township. Within these high-strain zones quartz veins normally contain chalcopyrite, pyrite, pyrrhotite with exsolved pentlandite and traces of sphalerite and galena. Chalcopyrite, pyrrhotite and pentlandite are deposited throughout shear zones which lack quartz veining. These zones are not known to contain large amounts of gold, although investigations are incomplete. It is also unknown if platinum group metals (which include platinum, palladium, rhodium, iridium, osmium and ruthenium) exist in these zones because no searches for platinum group elements have been undertaken.
Gold and copper values occupy a northeast-trending iron formation within the Net Lake-Vermilion Lake Deformation Zone. This mineralization is only known to exist southeast of Cooke Lake and immediately south of Net Lake. A unit of chert, magnetite and pyrrhotite outcrops along the southwest shore of Net Lake at Temagami North. Pyrrhotite, the most common sulfide mineral, occurs as small veins and disseminations. Small amounts of pyrite, sphalerite and exsolved pentlandite and chalcopyrite are present with the pyrrhotite. The main exposure lies immediately south of the Kanichee Mine Road, which branches off Highway 11. Minor gold and copper values constitute this zone. This sulfide-bearing unit is located within felsic volcanic rocks of the Older Volca
Temagami Greenstone Belt