Altamira Gold Completes First Deep Drill Hole at Maria Bonita and Extends Size of Alteration Zone at Tavares Norte Target, Cajueiro District Brazil
Altamira Gold Completes First Deep Drill Hole
at Maria Bonita and Extends Size of Alteration
Zone at Tavares Norte Target, Cajueiro District
Brazil
Vancouver, British Columbia--(Newsfile Corp. - September 2, 2025) -
Altamira Gold Corp. (TSXV:
ALTA) (FSE: T6UP) (OTCQB: EQTRF),
("
Altamira
" or the "
Company
") is pleased to announce the
completion of its first deep drill hole at the Maria Bonita target and to provide an update on ongoing
exploration activities across the Cajueiro District area, Mato Grosso, Brazil.
Highlights:
Drill hole MBA032, located 100 meters south of hole MBA029, which previously reported
213m @
0.8g/t gold from surface including 146m @ 1g/t gold,
intersected over 500 meters of
brecciated and highly altered porphyritic intrusive rocks from 34.3m to 534.7m depth, with quartz
veinlet densities averaging roughly 4 per meter (see Figures 3 and 4).
Results are pending.
Surface mapping and sampling at the Tavares Norte target, located 4km east of Maria Bonita and
1.5km north-west of the Cajueiro Central resource, suggests that the sericite alteration zone
extends 1.5km further east than previously known and is connected to the Morro Verde target,
located 1.5km east of Tavares Norte (see Figure 5).
Of 94 surface grab samples
+
collected at Tavares Norte, 20 returned gold values above 0.1 g/t Au,
with a maximum of 27.5 g/t Au. This sample also returned an assay value of 929 ppm Cu (see
Figure 6). Several samples are also anomalous in molybdenum with values ranging from 10 to 356
ppm Mo.
At Morro Verde, 62 surface grab samples
+
were collected, 13 returned gold values above 0.1 g/t
Au, with a maximum value of 5.2 g/t Au (see Figure 7). This sample also returned assay values of
356 ppm Mo, and 366 ppm Cu.
A high-resolution drone magnetic survey is underway, covering a total planned area of 56 km² with
545 km of north-south survey lines. To date, 43 km², or 75% of the planned area, has been
completed. This survey is providing detailed magnetic mapping to support target definition and
geological interpretation.
CEO Mike Bennett commented; "The first deep hole at Maria Bonita intersected over 500m of highly
altered porphyritic rocks and suggests that the intrusive system there could be significantly larger than
currently envisaged. Additional holes will be completed at Maria Bonita once we have received the
results from this first deep hole. In addition, the surface mapping and sample results from the untested
Tavares Norte target, located 1.5km east of Maria Bonia are highly encouraging and suggest the
possible presence of another porphyry system. Initial drill testing of this target is being planned as part
of the current program."
+
By their nature, grab samples are not representative of the bulk metal content of a mineralized zone.
CAJUEIRO PROJECT
The Cajueiro project is located approximately 75km NW of the town of Alta Floresta in the state of Mato
Grosso (Figure 1) in central western Brazil. The project is easily accessible by road, lies on open
farmland and has grid power and a local water supply. Cajueiro is the most advanced of three key
projects that Altamira controls in the region, the other two being Apiacas and Santa Helena (Figure1).
Figure 1: Location of the Cajueiro, Apiacas and Santa Helena projects.
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The Cajueiro district consists of two independently estimated gold mineral resources at Cajueiro Central
and Maria Bonita, plus a series of eight additional untested exploration targets within a radius of 8km of
Cajueiro Central.
The Cajueiro Central area has a current open pit resource
1
of 5.66Mt @ 1.02 g/t gold for a total of
185,000 oz in the Indicated Resource category and 12.66Mt @ 1.26 g/t gold for a total of 515,000 oz in
the Inferred Resource category (estimated using a cut-off grade of 0.25g/t Au and a gold price of
US$1,500/oz).
The Maria Bonita open-pit resource consists of Indicated Resources of 24.19Mt @ 0.46g/t gold (for a
total of 357,800oz) and Inferred Resources of 25.64Mt @ 0.44g/t gold (for a total of 362,400oz)
2
. These
resources were calculated using a 0.2 g/t gold cut-off grade and a gold price of US$2,780/oz. These
resources include near-surface saprolite Indicated Resources of 2.02Mt @ 0.59g/t gold (38,000oz) and
Inferred Resources of 0.68Mt @ 0.40g/t gold (8,700oz).
The mineralized zone at Maria Bonita is interpreted as dipping to the south and is open down dip. The
best drillhole to date (MBA029) intersected
213m @ 0.8g/t gold from surface including 146 m@1g/t
gold
. This third phase drill program is aimed at testing the area to the south and down-dip from the
current resource model.
The Maria Bonita porphyry gold deposit is interpreted as part of a district-scale, porphyry-related
mineralizing event. There are currently eight additional porphyry gold targets awaiting scout drill testing
over an 8km radius from the Cajueiro Central resource (Figure 2). Three partially tested drill targets lie
outside the current Cajueiro Central mineral resource. Drilling is planned for these targets and will
commence as soon as a second rig becomes available.
Figure 2: Cajueiro district targets (yellow labels) and their position in relation to the defined Mineral
Resources at Cajueiro Central and Maria Bonita (white labels for sub-sectors). An alignment of six of the
targets occur in close spatial association to a pronounced east-west fault corridor marked by later
gabbroic dykes.
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Maria Bonita Drilling Update
Drilling recently commenced with hole MBA032, located 100 meters south of hole MBA-029. The
objective of this hole was to test the depth extension of the mineralized section seen in hole MBA029
and geological logging of drillhole MBA032 has identified some 500 meters of the quartz porphyry body
which displays on average, roughly 4 quartz veinlets per meter (Figures 3 and 4).
All samples from MBA032 have been submitted to the laboratory and assay results are pending.
Figure 3: Typical quartz veining within porphyritic intrusive rocks from Maria Bonita hole MBA-032.
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Figure 4: S-N cross-section through drill holes MBA-013, MBA-029, and MBA-032.
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Tavares Norte Surface Mapping and Sampling
The Tavares Norte prospect is located 1km NW of the Central resource area. The current soil anomaly
extends for some 1300 metres x 1800 metres. Previous surface rock chip grab sampling
+
across the
prospect returned an average grade of 3.2g/t gold from ten samples with a highest value of 7.8 g/t gold
(see press release dated April 14, 2025).
A total of 94 grab
+
samples were collected at Tavares Norte during recent geological mapping. Of
these, 20 returned values above 0.1 g/t gold, with a maximum of 27.5 g/t gold. This sample also returned
an assay value of 929 ppm of Copper. Gold-bearing samples are associated with sericitic to phyllic
alteration, as well as magmatic breccias showing potassic alteration. Eleven samples also returned
anomalous molybdenum values ranging from 10 to 356 g/t Mo.
Molybdenum is commonly found in the higher temperature parts of porphyry systems.
The Tavares Norte and Morro Verde targets are located approximately 1.5 km apart. Recent mapping
indicates that a zone of sericite alteration extends between both targets (Figure 5). All grab samples with
assay results reported occur within this sericitic alteration envelope. Sample 128710 from Morro Verde,
returned assay values of 5.20 g/t Au, 356 ppm Mo, and 366 ppm Cu (Figure 6).
+
By their nature, grab samples are not representative of the bulk metal content of a mineralized zone.
Figure 5: Integrated geological map of the Tavares Norte and Morro Verde Targets with grab sample
results.
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Figure 6: Photo of sample 128644 containing 27.5 g/t Au and 929 ppm Cu from Tavares Norte.
To view an enhanced version of this graphic, please visit:
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Figure 7: Photo of sample 128710 containing 5.20 g/t Au, 356 ppm Mo, and 366 ppm Cu from Morro
Verde.
To view an enhanced version of this graphic, please visit:
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Drone Magnetic Survey
As part of the ongoing exploration program within the Cajueiro District, a high-resolution drone magnetic
survey is in progress over a total area of 56 km², comprising 545 km of north-south survey lines. To date,
43 km², or 75% of the planned area, has been completed, corresponding to 407 km of survey lines. This
survey is intended to provide detailed magnetic mapping to support target definition and geological
interpretation.
Qualified Person
Guillermo Hughes, FAIG and M Aus IMM., a consultant to the Company as well as a Qualified Person as
defined by National Instrument 43-101, supervised the preparation of the technical information in this
news release.
About Altamira Gold Corp.
The Company is focused on the exploration and development of gold and copper projects within western
central Brazil, strategically advancing five projects spanning over 100,000 hectares within the prolific
Juruena Gold Belt—an area that has historically yielded over 6 million ounces of placer gold**. The
Company's advanced Cajueiro project contains two gold deposits. The central area comprises NI 43-
101 resources of 5.66Mt @ 1.02 g/t gold for a total of 185,000 oz in the Indicated Resource category
and 12.66Mt @ 1.26 g/t gold for a total of 515,000oz in the Inferred Resource category. In addition, the
Maria Bonita gold deposit comprises additional open pit Indicated Resources of 24.19Mt @ 0.46g/t for
a total of 357,800oz, and Inferred Resources of 25.64Mt @ 0.44g/t for a total of 362,400oz.
Ongoing exploration and fieldwork at Cajueiro indicate the presence of multiple porphyry gold systems,
reinforcing its potential for district-scale development. These hard-rock gold sources align with historical
alluvial gold production, highlighting the region's exceptional gold endowment and potential scalability.
With two independently established mineral resources, a highly prospective geological setting and a
track record of significant discoveries, the Company is well-positioned to unlock further value across its
extensive land package.
*
1
NI 43-101 Technical Report, Cajueiro Project, Mineral Resource Estimate: Global Resource Engineering, Denver Colorado USA, 10
th
October
2019; Authors K. Gunesch, PE; H. Samari, QP-MMSA; T. Harvey, QP-MMSA
*
2
NI43-101 Technical Report, Mineral Resource for the Maria Bonita Prospect: VMG Consultoria, Belo Horizonte, Minas Gerais, Brazil.
12
th
June
2025; Author V. Myadzel
**
Juliani, C. et al; Gold in Paleoproterozoic (2.1 to 1.77 Ga) Continental Magmatic Arcs at the Tapajós and Juruena Mineral Provinces
(Amazonian Craton,Brazil): A New Frontier for the Exploration of Epithermal-Porphyry and Related Deposits. Minerals 2021, 11, 714.
https://doi.org/10.3390/min11070714
On Behalf of the Board of Directors,
ALTAMIRA GOLD CORP.
"Michael Bennett"
Michael Bennett
President & CEO
Tel: 604.676.5661
Toll-Free:1-833-606-6271
www.altamiragold.com
Neither TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in
policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this
release.
The securities described herein have not been registered under the U.S. Securities Act or any state
securities laws, and may not be offered or sold in the United States absent registration or an
applicable exemption from registration requirements under the U.S. Securities Act and any applicable
state securities laws.
Forward-looking Statements
Certain information contained herein constitutes "forward-looking information" under Canadian
securities legislation.
Forward-looking information includes, but is not limited to, statements with
respect to the extension of the Warrants.
Generally, forward-looking information can be identified by
the use of forward-looking terminology such as "will", "intends" or variations of such words and
phrases or statements that certain actions, events or results "will" occur.
Forward-looking statements
are based on the opinions and estimates of management as of the date such statements are made
and they are subject to known and unknown risks, uncertainties and other factors that may cause the
actual results to be materially different from those expressed or implied by such forward-looking
statements or forward-looking information, including the receipt of all necessary regulatory approvals.
Although management of the Company has attempted to identify important factors that could cause
actual results to differ materially from those contained in forward-looking statements or forward-looking
information, there may be other factors that cause results not to be as anticipated, estimated or
intended.
There can be no assurance that such statements will prove to be accurate, as actual results
and future events could differ materially from those anticipated in such statements.
Accordingly,
readers should not place undue reliance on forward-looking statements and forward-looking
information.
The Company will not update any forward-looking statements or forward-looking
information that is incorporated by reference herein, except as required by applicable securities laws.
Notes
Gold analysis has been conducted by SGS method FAA505 (fire assay of 50g charge), with higher
grade samples checked by FAA525. Analytical quality is monitored by certified references and
blanks. Until dispatch, samples are stored under the supervision the Company's exploration office.
The samples are couriered to the assay laboratory using a commercial contractor. Pulps are returned
to the Company and archived. Drill holes results are quoted as down-hole length weighted
intersections.
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