G Mining Ventures Extends High-Grade Mineralization at Gurupi and Confirms Continuity at Depth at TZ
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G Mining Ventures Extends High-Grade Mineralization at
Gurupi and Confirms Continuity at Depth at TZ
BROSSARD, QC, September 16 , 2026 – G Mining Ventures Corp . (“GMIN” or the
“Corporation”) (TSX:GMIN | OTCQX:GMINF) today provides an update on its exploration drilling
activities completed at its wholly owned Gurupi Project (“Gurupi” or the “Project”) in Maranhão
state, Brazil and Tocantinzinho mine (“TZ”) in Pará State, Brazil. At Gurupi, drilling continues to
demonstrate extensions to known mineralization at the Blanket (“Blanket”) and Mandiocal
(“Mandiocal”) deposits and while maiden drilling at the Grodiocal target (“ Grodiocal”) has
confirmed a new near-surface gold discovery. At TZ, drilling below the current pit design confirms
the continuity of mineralization at depth, while regional exploration is identifying additional
opportunities across a broader mineralized corridor.
Intercepts are indicated in metres (“m”) and grade in grams per tonne of gold (“g/t Au”).
New highlights include:
Gurupi
• Blanket: Broad intercepts extend mineralization approximately 250 m etres beyond the
2025 Mineral Resource Estimate (“MRE”), with results including 79.6 m at 1.78 g/t Au and
63.5 m at 1.28 g/t Au
• Mandiocal: Mineralization extended up to 125 m below the 2025 MRE pit shell, including
48.4 m at 1.32 g/t Au and 35.0 m at 1.37 g/t Au
• Grodiocal: Maiden drilling confirmed a new, near-surface gold discovery, highlighted by
23.0 m at 1.97 g/t Au, including 9.0 m at 4.24 g/t Au and 10.0 m at 3.42 g/t Au
• An updated MRE is expected to be complete before year-end, which will form the basis of
a Preliminary Economic Assessment (“PEA”) targeted to be completed by the end of 2026
TZ
• Drilling up to 150 m etres below the current pit design confirms continuity of
mineralization at depth
• Results include 78.1 m at 1.81 g/t Au, including 16.0 m at 4.34 g/t Au and 51.0 m at
1.31 g/t Au, including 7.80 m at 6.42 g/t Au
• Regional exploration has defined a 15 km by 3 km mineralized corridor hosting the
Tocantinzinho deposit and multiple satellite targets.
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Julie-Anaïs Debreil, Vice-President Geology & Resources, commented: “The results from our
2026 exploration programs continue to validate the significant potential we see across both Gurupi
and Tocantinzinho. At Gurupi, drilling has successfully extended mineralization at Blanket and
Mandiocal while confirming a new gold di scovery at Grodiocal, further demonstrating the district -
scale potential of the Project. At TZ, drilling below the current pit design continues to confirm the
continuity of m ineralization at depth, while regional exploration is identifying additional
opportunities across a broader mineralized corridor. As we advance an updated MRE and PEA at
Gurupi, these programs continue to strengthen our pipeline of organic growth opportunities in
Brazil.”
Gurupi Demonstrates District-Scale Growth Potential
Gurupi hosts approximately 43.5 million tonnes (“ Mt”) grading 1.31 g/t Au, which contain
1.8 million ounces (“Moz”) of Indicated Resources and 18.5 Mt grading 1.29 g/t Au containing 0.8
Moz of Inferred Resources as estimated in the 2025 MRE, distributed across the Blanket, Contact,
Chega Tudo and Mandiocal deposits (Figure 1). Since exploration drilling resumed in November
2025, the Corporation has completed 32,610 m in 186 holes across Blanket, Mandiocal and
Grodiocal. The program is testing extensions to existing mineralized systems and evaluating the
newly discovered Grodiocal target along the prospective Chega Tudo-Mandiocal corridor.
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Figure 1 - Gurupi Deposits
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Blanket Drilling Intersects Mineralization Beyond Current Resource Limits
At Blanket, drilling continues to test the potential for further extensions of mineralization beyond
the current MRE. Nineteen diamond drill holes for 6,323 m have been completed with assay results
received for seven holes and results pending for 12 holes (Table 1). Recent drilling has intersected
mineralization approximately 250 m beyond the current MRE, supporting the interpretation of
down-plunge continuity and indicating that the deposit remains open for follow-up drilling
(Figure 2a - Section through Blanket Deposit a, 2b and 2c). Structural analysis indicates that
multiple folding events have enhanced both the thickness and grade distribution of
mineralization, creating broad zones that remain only partially tested. Results from the ongoing
program support continued evaluation of the deposit along plunge and at depth.
Table 1: Significant Blanket Drilling Highlights
Hole ID From
(m)
To
(m)
Au
(g/t Au)
Length*
(m) Composite
GUD-26-019 202.0 234.0 0.67 32.0 32.0 m at 0.67 g/t Au
GUD-26-021 254.0 284.0 1.38 30.0 30.0 m at 1.38 g/t Au
Incl. 254.0 263.1 2.21 9.1 9.1 m at 2.21 g/t Au
And 265.0 269.0 2.64 4.0 4.0 m at 2.64 g/t Au
GUD-26-023 170.0 233.5 1.28 63.5 63.5 m at 1.28 g/t Au
Incl. 197.0 210.5 3.21 13.5 13.5 m at 3.21 g/t Au
GUD-26-026 240.0 272.5 2.28 32.5 32.5 m at 2.28 g/t Au
Incl. 240.0 247.0 6.78 7.0 7.0 m at 6.78 g/t Au
GUD-26-029 145.5 225.1 1.78 79.6 79.6 m at 1.78 g/t Au
Incl. 215.3 225.1 3.49 9.8 9.8 m at 3.49 g/t Au
And 180.7 185.7 3.17 5.0 5.0 m at 3.17 g/t Au
*True width estimated at 95% of the length
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Figure 2a - Section through Blanket Deposit
Figure 2b - Section through Blanket Deposit
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Figure 2c - Section through Blanket Deposit
Mandiocal Drilling Confirms Down-Plunge Continuity
At Mandiocal, gold mineralization is hosted within a dacitic volcanic unit. Twenty-four diamond
drill holes for 6,787 m have been completed, with assay results received for 13 holes and results
pending for 11 holes (Table 2). The objective was to evaluate the lateral and depth extensions of
the deposit. Drilling has intersected mineralization up to 125 m below the 2025 MRE pit shell while
demonstrating increased thickness of the mineralized system at depth (Figure ). These results
support the interpretation of southeast down-plunge continuity and indicate that mineralization
remains open beyond the limits of the current resource model.
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Table 2: Significant Mandiocal Drilling Highlights
Hole ID From
(m)
To
(m)
Au
(g/t Au)
Length*
(m) Composite
GUD-26-027 222.5 257.5 1.37 35.0 35.0 m at 1.37 g/t Au
Incl. 239.5 245.5 3.60 6.0 6.0 m at 3.60 g/t Au
GUD-26-028 276.5 324.9 1.32 48.4 48.4 m at 1.32 g/t Au
Incl. 293.0 302.8 2.83 9.8 9.8 m at 2.83 g/t Au
Incl. 308.8 313.8 3.55 5.0 5.0 m at 3.55 g/t Au
GUD-26-030 251.5 284.0 0.82 32.5 32.5 m at 0.82 g/t Au
Incl. 261.5 270.5 1.24 9.0 9.0 m at 1.24 g/t Au
GUD-26-031 216.5 251.0 0.77 34.5 34.5 m at 0.77 g/t Au
GUD-26-033 183.0 228.0 0.55 45.0 45.0 m at 0.55 g/t Au
GUD-26-034 170.2 197.0 0.72 26.8 26.8 m at 0.72 g/t Au
GUD-26-035 210.8 234.3 0.64 23.5 23.5 m at 0.64 g/t Au
*True width estimated at 85% of the length
Figure 3 - Section of Mandiocal deposit
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Maiden Drilling Confirms the Grodiocal Gold Discovery
Grodiocal is a newly identified discovery located northwest of Mandiocal along the prospective
Chega Tudo trend, where no historical drilling had pre viously been completed. The maiden
program comprised 17,667 m in 127 holes, including 22 diamond drill holes and 105 Reverse
Circulation holes, and identified multiple zones of near -surface gold mineralization within a
corridor extending approximately 5 km in strike length and up to 1 km in width (Table 3) .
Mineralization is hosted within deformed sedimentary rocks of the Chega Tudo Formation. The
results establish Grodiocal as a priority target for follow-up drilling to better define the geometry,
continuity, and extent of the mineralized zones (Figure 4).
Table 3: Significant Grodiocal Drilling Highlights
Hole ID From
(m)
To
(m)
Au
(g/t Au)
Length*
(m) Composite
GUD-26-007 19.6 33.0 1.02 13.4 13.4 m at 1.02 g/t Au
55.5 63.0 3.48 7.5 7.5 m at 3.48 g/t Au
GUD-26-010 139.5 147.3 1.59 7.8 7.8 m at 1.59 g/t Au
GUD-26-017 97.5 109.5 1.09 12.0 12.0 m at 1.09 g/t Au
GUD-26-022 92.0 95.0 4.31 3.0 3.0 m at 4.31 g/t Au
GUR-26-018 74.0 81.0 2.54 7.0 7.0 m at 2.54 g/t Au
GUR-26-024 40.0 47.0 1.62 7.0 7.0 m at 1.62 g/t Au
GUR-26-039 63.0 75.0 1.26 12.0 12.0 m at 1.26 g/t Au
Incl. 65.0 68.0 3.85 3.0 3.0 m at 3.85 g/t Au
GUR-26-057 61.0 70.0 1.40 9.0 9.0 m at 1.40 g/t Au
Incl. 61.0 64.0 3.54 3.0 3.0 m at 3.54 g/t Au
GUR-26-059 2.0 26.0 0.60 24.0 24.0 m at 0.60 g/t Au
GUR-26-066 23.0 33.0 3.42 10.0 10.0 m at 3.42 g/t Au
GUR-26-068 51.0 74.0 1.97 23.0 23.0 m at 1.97 g/t Au
Incl. 55.0 64.0 4.24 9.0 9.0 m at 4.24 g/t Au
GUR-26-072 84.0 100.0 1.51 16.0 16.0 m at 1.51 g/t Au
Incl. 91.0 95.0 3.76 4.0 4.0 m at 3.76 g/t Au
GUR-26-073 80.0 85.0 2.02 5.0 5.0 m at 2.02 g/t Au
GUR-26-076 17.0 29.0 0.87 12.0 12.0 m at 0.87 g/t Au
*True width estimated at 85% of the length