Mr. Alan Carter reports
CABRAL GOLD TRENCHES 20M @ 3.6 G/T GOLD ON SURFACE AT THE MACHICHIE MAIN GOLD DEPOSIT, CUIU CUIU GOLD DISTRICT, BRAZIL
Cabral Gold Inc. has released assay results from two surface trenches and eight reverse circulation drill holes at the Machichie Main gold deposit within the Cuiu Cuiu gold district, Brazil.
Highlights:
- Surface trench CT051 at the Machichie Main gold deposit at Cuiu Cuiu returned 20 metres of 3.6 grams per tonne gold, including four metres of 15.7 g/t gold in gold-in-oxide material at surface. The mineralized interval within the trench is open to the north and south. These results confirm the presence of significant higher-grade mineralization within the near-surface gold-in-oxide material at the Machichie Main deposit.
- Surface trench CT052, developed 150 m west of trench CT051, also returned seven m of 0.8 g/t gold. The mineralized interval is again open to the north and south.
- Reverse circulation drill results from Machichie Main include:
- Four m of 3.9 g/t gold from 36-metre depth including one m of 10.6 g/t gold in RC497;
- Four m of 3.1 g/t gold from 41-metre depth including one m of 10.6 g/t gold in RC496;
- Seven m of 1.5 g/t gold from 64-metre depth in RC494;
- Seven m of 1.2 g/t gold from 78-metre depth in RC495;
- One m of 9.9 g/t gold from 26-metre depth and one m of 7.3 g/t gold from 37-metre depth in RC503;
- All of these intercepts were in fresh rock intrusive material below the near-surface gold-in-oxide material.
- Results thus far from the trenches and initial drill holes confirm continuity and grade of the Machichie mineralization along strike and at depth.
- Samples from the trenches are in the process of metallurgical testing to characterize the Machichie oxide zone.
Alan Carter, Cabral's president and chief executive officer, commented: "The current drilling and trenching program at Machichie Main is aimed primarily at upgrading the inferred resource base within the near-surface gold-in-oxide zone to indicated resources. These results confirm the presence of significant grades, both within the near-surface gold-in-oxide material, which comprises mineralized blanket sediments and saprolite (weathered bedrock), as well as the underlying fresh primary intrusive material at Machichie Main. The trench results in particular are significant because they confirm the presence of excellent grades within gold-in-oxide material at surface. This bodes very well for our efforts to upgrade the inferred resources at Machichie Main as we work towards updating the results from the PFS study on an initial heap-leach starter operation previously released in October, 2024."
Machichie Main trench and drill results
The Machichie Main zone is an east-west-trending zone of gold mineralization, which is located 500 m north of the MG gold deposit. As with the MG and Central gold deposits, the zone of primary mineralization within intrusive rocks is overlain by an extensive weathered layer consisting of near-surface sediments and underlying saprolite (weathered intrusive rock). Both types of material are considered gold-in-oxide material. A preliminary inferred resource estimate of 3.73 million tonnes of 0.5 g/t gold was calculated for the gold-in-oxide material only at Machichie Main and was released in October, 2024 (see press release dated Oct. 21, 2024).
The main objective of the current program is to upgrade a significant portion of the current inferred resources to indicated status so they can be included in the mine plan for the heap-leach starter operation. The current program of drilling and trenching is also aimed at shedding light on the underlying primary mineralized zone in the intrusive rocks and collecting additional material for a series of metallurgical column leach tests.
Four trenches have been developed recently at Machichie Main to obtain samples for metallurgical testing and further define mineralization in the oxide zone. Results have been received on two (CT051 and CT052) of the four trenches to date. Trench CT051 was excavated over the central part of the Machichie Main gold deposit, over an interval of 20 m, and returned 20 m of 3.6 g/t gold including four m of 15.7 g/t gold in weathered gold-in-oxide saprolite material. Mineralization is open to the north and south.
The mineralized zone cut in trench CT051 is almost certainly the same mineralized zone cut at depth in drill holes DDH279 (16.6 m of 1.9 g/t gold including one m of 29.7 g/t gold), DDH300 (15.7 m of 1.6 g/t gold) and DDH301 (12.2 m of 1.4 g/t gold).
Trench CT052 was excavated 150 m west of trench CT051 and returned seven m of 0.8 g/t gold. The mineralized interval is again open to the north and south.
These results confirm the presence of significant high-grade gold mineralization within gold-in-oxide material at Machichie Main and bode well for the possible inclusion of additional indicated resources from Machichie Main into an updated mine plan for the heap-leach starter operation at Cuiu Cuiu. Results are currently pending from two additional trenches at Machichie Main CT053 and CT054.
Results were received on eight RC drill holes (RC494 to RC498, RC500 to RC501 and RC503) at Machichie Main, which were all drilled on the margins of the gold-in-oxide zone to determine the extent of the near-surface mineralization. All of the holes intersected multiple zones of mineralization.
Several of the holes cut significant intercepts within the gold-in-oxide material, for example, 10 m of 0.42 g/t gold from surface in RC497. However, a number of excellent results were returned from the underlying primary intrusive material, including four m of 3.9 g/t gold, including one m of 10.6 g/t gold in RC497 and four m of 3.1 g/t gold, including one m of 10.6 g/t gold in RC496. Other notable results included seven m of 1.5 g/t gold from RC494, seven m of 1.2 g/t gold from RC495, and one m of 9.9 g/t gold and one m of 7.3 g/t gold from RC503.
Holes RC496 and RC497 were drilled 50 m apart, and intersected the same mineralized zone along strike with similar grades and thicknesses. Similarly, the mineralization intersected in holes RC494 and RC495 is the same zone again returning similar grades and thicknesses along strike. Thus far, the infill drilling at Machichie has confirmed continuity of grade and thicknesses along strike and at depth into the primary intrusive, affirming potential to upgrade the inferred resources.
RC drilling with two rigs continues with results pending on an additional 38 holes.
About Cabral Gold Inc.
The company is a junior resource company engaged in the identification, exploration and development of mineral properties, with a primary focus on gold properties located in Brazil. The company has a 100-per-cent interest in the Cuiu Cuiu gold district located in the Tapajos region, within the state of Para in northern Brazil. Three main gold deposits have so far been defined at the Cuiu Cuiu project, which contain National Instrument 43-101-compliant indicated resources of 12.29 million tonnes of 1.14 g/t gold (450,200 ounces) in fresh basement material and 11.11 Mt of 0.48 g/t gold (171,883 oz) in oxide material. The project also contains inferred resources of 13.63 Mt of 1.04 g/t gold (455,100 oz) in fresh basement material and 12.22 Mt of 0.39 g/t gold (151,608 oz) in oxide material. The resource estimate for the primary material is based on the NI 43-101 technical report dated Oct. 12, 2022. The resource estimate for the oxide material is based on an NI 43-101 technical report dated Oct. 21, 2024.
The Tapajos gold province is the site of the largest gold rush in Brazil's history, which, according to the ANM (Agencia Nacional de Mineracao or National Mining Agency of Brazil), produced an estimated 30 million to 50 million ounces of placer gold between 1978 and 1995. Cuiu Cuiu was the largest area of placer gold workings in the Tapajos and produced an estimated two million ounces of placer gold historically.
Technical information included in this release was supervised and approved by Brian Arkell, BS in geology and MS in economic geology, SME (registered member), AusIMM (fellow) and SEG (fellow), Cabral Gold's vice-president, exploration and technical services, and a qualified person under NI 43-101.
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