Mr. Ian Stalker reports
100% BGC OWNED SAO JORGE PROJECT A UPDATED RESOURCE ESTIMATE INCREASES INDICATED GOLD OUNCES BY 43%
Brazilian Gold Corp.'s updated
National Instrument 43-101-compliant mineral resource for the Sao Jorge gold deposit includes 14.23 million tonnes grading 1.18 grams per tonne gold (541,000 ounces) in the
indicated category and 27.81 million tonnes grading 0.68 gram per tonne gold (611,000 ounces)
in the inferred category at a 0.3-gram-per-tonne cut-off. The estimate incorporates
an additional 14,393 metres (38 holes) of diamond drilling completed by
Brazilian Gold in 2011 as compared with the previous estimate that was
based on 22,762 metres (110 holes) of diamond drilling completed by the
previous operators. The mineral resource estimate was completed by
Coffey Mining of Toronto, and is documented in an
independent National Instrument 43-101 technical report that will be posted on the company's website
and SEDAR within 45 days of this news release.
The wholly owned Sao Jorge property (585 square kilometres) is well
situated with respect to infrastructure that includes hydroelectric
power, a paved highway three kilometres due east of the deposit, and a skilled
work force in the nearby town of Novo Progresso located 70 kilometres to the
south.
Highlights:
- Indicated ounces have increased by 43 per cent (partly reflecting an 18-per-cent
increase in indicated grade) when compared with the previous resource
estimate in the 2011 preliminary economic assessment (PEA) by Coffey,
both of which were reported at a 0.3-gram-per-tonne-gold cut-off.
- At a 0.5-gram-per-tonne-gold cut-off grade, the indicated gold grade increases to
1.40 grams per tonne gold with a total of 465,000 contained ounces.
- Inferred ounces have increased 9.5 per cent (partly reflecting a 35-per-cent increase
in tonnage) when compared with the 2011 PEA.
- Selective mining of internal waste in the deposit and diverting this
tonnage to a surface stockpile may result in an increase in the head
grade delivered to the process plant.
- Potential robust operating margin suggested by the in situ metal value
of $67 (U.S.) per tonne (indicated resource grade of 1.18 grams per tonne and gold price of
$1,765 per ounce) and the 2011 PEA operating cost of $16.36 (U.S.) per tonne (note
mineral resources that are not mineral reserves do not have
demonstrated economic viability).
- An untested 1.5-kilometre-long resistivity plus or minus chargeability anomaly
southeast of the Sao Jorge deposit is similar to the geophysical
signature over the deposit suggesting potential to find additional
zones of gold mineralization to the southeast; potential to find new
gold deposits on the largely unexplored Sao Jorge property is
considered excellent.
Ian Stalker, chief executive officer of Brazilian Gold, commented: "We are delighted with
the results of the updated independent resource estimate on the Sao
Jorge deposit. The increase in tonnage and grade of the indicated
resource suggests that significantly more ounces will fall within the
pit shell as compared to the 2011 PEA, as well as the increase in the
inferred ounces that will fall into the same mining inventory.
"In addition, as identified by the recent drilling and more detailed
geological interpretation of the deposit, there is potential to increase
the overall deposit grade by selectively mining the low-grade internal
waste and diverting it to a surface stockpile instead of sending it
through the process plant.
"The updated resource numbers along with recently completed
metallurgy, power studies, environmental assessments, as well as the
depreciation of the Brazilian real will be incorporated in an updated
PEA, which should result in substantially better economics than the
previous more than acceptable PEA results, and will make the decision to
move to production more compelling.
"Finally, with the recently identified geophysical anomaly located
directly southeast of the deposit and extending for greater than 1.5 kilometres,
the potential to find additional zones of gold mineralization makes us
even more confident about the future development of our Sao Jorge
project in Brazil."
The Sao Jorge resource estimate is based on 22,762 metres (110 holes) of
diamond drilling completed by the previous operators and 14,393 metres (38
holes) of diamond drilling completed by Brazilian Gold since acquiring
the project in late 2010. Gold assays (19,590) were composited at one-metre lengths and interpolated into the block model using multiple indicator
kriging. A three-dimensional solid model of the primary and oxide
mineralization was constructed to constrain the resource estimate. The
block model comprises individual blocks measuring five metres by five metres by five metres. The mineral resource estimate (oxide and primary mineralization) at
various cut-off grades is shown in the table; the oxide resource makes up a small part (9 per cent) of this overall resource. A preliminary economic
assessment on the Sao Jorge deposit was completed in June, 2011,
which indicates an economic open-pit cut-off grade of 0.3 gram per tonne gold using
a gold price of $1,300 (U.S.) and economic parameters as outlined in the
report.
SAO JORGE INDICATE AND INFERRED MINERAL RESOURCE
(OXIDE AND SULPHIDE) AT VARIOUS CUT-OFF GRADES
Lower
cut-off grade Million tonnes Average grade Contained gold
(g/t Au) (g/t Au) (000oz)
Indicated mineral resource 0.3 14.23 1.18 541
0.4 12.00 1.29 499
0.5 10.36 1.40 465
Inferred mineral resource 0.3 27.81 0.68 611
0.4 22.12 0.74 526
0.5 18.53 0.78 467
The Sao Jorge deposit is approximately 1,400 metres long by up to 200 metres wide
and has been intersected in drill holes to 350 metres depth; the deposit
strikes northwest and has a subvertical dip. The deposit is hosted in
quartz monzogranite and mineralization appears to be spatially
associated with a number of discontinuous shear and fracture zones.
Alteration minerals included chlorite, epidote, sericite, silica and
sulphides that occur along fractures or where the fracture density is
high as pervasive alteration. The predominant sulphide is pyrite with
minor amounts of chalcopyrite. Gold mineralization is commonly
associated with silica-sericite-sulphide alteration and higher gold
values are generally associated with higher pyrite content and the
presence of chalcopyrite.
Porfirio Cabaleiro, BSc (mining engineer), MAIG, and Hebert Oliveira,
BSc (geology), MAIG, are the qualified persons for the National Instrument 43-101 report
on the resource estimate of the Sao Jorge gold deposit, and have reviewed
and approved the contents of this press release as far as it relates to
their work.
Garnet Dawson, MSc, PGeo (B.C.), vice-president,
exploration, for the company, and a qualified person, as defined by
National Instrument 43-101, has reviewed and approved the technical
disclosure contained in this news release.
We seek Safe Harbor.
© 2026 Canjex Publishing Ltd. All rights reserved.