Carpathian
increases the Open-Pit Measured and Indicated Resource by 200% on the RDM Gold
Project, Brazil
(Toronto,
Ontario – July 26, 2010) Carpathian Gold Inc.
(CPN:TSX) (“the Corporation or Carpathian”) is pleased to announce an updated
National Instrument (“NI”) 43-101 Resource Estimate, as provided by independent
consultants NCL Brasil Ltda. (“NCL”)
on its 100% owned Riacho dos Machados (“RDM”) gold project located in Minas
Gerais State, Brazil. This Resource
Estimate is an update to the initial NI 43-101 Resource Estimate previously
announced on May 18, 2009 (the “2009 Resource Estimate”), and includes results
from a total of 55,732 metres of drilling of which 24,269 metres was re-sampling
of previous drill holes completed by
Companhia Vale do Rio Doce (“Vale”).
In
early 2010, the Corporation completed its Phase II drill program of 20,526
metres that was designed to upgrade the inferred resource category to the
measured and indicated categories over a broad mineralized zone within the
open-pit portion of the deposit as defined in the Preliminary Economic
Assessment (”PEA”) study released on August 12, 2009.
The open-pit portion of the updated measured and indicated categories of
the mineral resource will be utilized for the reserve estimate in the nearly
completed Feasibility Study.
The
total open-pit plus underground updated Resource Estimate (the “2010 Resource
Estimate”) includes 812,300 ounces of gold in the measured and indicated
categories and 692,900 ounces of gold in the inferred category at a gold price
of US$950/ounce as shown in the table below which summarizes the results of the
2010 Resource Estimate for both the open-pit and underground gold
mineralization.
NI
43-101 Mineral Resource Estimate for RDM, July 2010
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Open-Pit
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Measured
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Indicated
|
Measured and Indicated
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Inferred
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Ktonnes
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Au (g/t)
|
Au (koz)
|
Ktonnes
|
Au (g/t)
|
Au (koz)
|
Ktonnes
|
Au (g/t)
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Au (koz)
|
Ktonnes
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Au (g/t)
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Au (koz)
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OXIDE
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125
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1.18
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4.8
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1,133
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1.13
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41.1
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1,258
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1.13
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45.9
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373
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1.29
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15.5
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MIXED
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102
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1.32
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4.3
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1,764
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1.38
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78.1
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1,865
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1.37
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82.4
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213
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1.37
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9.3
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FRESH ROCK
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1,361
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1.61
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70.3
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12,715
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1.49
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607.6
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14,076
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1.50
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677.9
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6,594
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1.56
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331.1
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TOTAL
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1,588
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1.55
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79.3
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15,611
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1.45
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726.8
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17,199
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1.46
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806.2
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7,179
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1.54
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355.9
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Underground
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Measured
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Indicated
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Measured and Indicated
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Inferred
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Ktonnes
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Au (g/t)
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Au (koz)
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Ktonnes
|
Au (g/t)
|
Au (koz)
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Ktonnes
|
Au (g/t)
|
Au (koz)
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Ktonnes
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Au (g/t)
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Au (koz)
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Total
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-
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-
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-
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53
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3.63
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6.2
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53
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3.63
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6.2
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3,922
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2.67
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337.0
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Total Open-Pit & Underground
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Measured
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Indicated
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Measured and Indicated
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Inferred
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Ktonnes
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Au (g/t)
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Au (koz)
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Ktonnes
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Au (g/t)
|
Au (koz)
|
Ktonnes
|
Au (g/t)
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Au (koz)
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Ktonnes
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Au (g/t)
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Au (koz)
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Total
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1,588
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1.55
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79.3
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15,664
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1.46
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733.0
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17,252
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1.46
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812.3
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11,101
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1.94
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692.9
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·
Base case cut-offs grades used in
the mineral resource are 0.36 g/t Au for the open-pit and 1.09 g/t Au for the
underground component of the mineralization.
·
Open-pit resources are constrained
within a pit shell utilizing appropriate mining and processing costs and
US$950/oz gold (see parameters listed below).
·
Rounding of tonnes as required by
reporting guidelines may result in apparent differences between tonnes, grade
and contained metal content.
A comparison between the 2010
Resource Estimate (open-pit and underground) and the 2009 Resource Estimate is
shown below.
|
Category
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2009
|
2010 (current)
|
Change
|
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Open-Pit + Underground:
Measured + Indicated ounces of gold
|
290,200
|
812,300
|
+ 180%
|
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Open-Pit + Underground:
Inferred ounces of gold
|
1,012,400
|
692,900
|
-32%
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Open-Pit: Measured +
Indicated ounces of gold
|
268,800
|
806,200
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+200%
|
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Open Pit: Inferred ounces of
gold
|
762,700
|
355,900
|
-53%
|
Note: See Press Release dated May 18, 2009 for further
details on the 2009 Resource Estimate
Of the
total 2010 Resource Estimate, 99.2% of the measured and indicated resource and
51.4% of the inferred resource is located within a Whittle pit shell.
The pit shell was obtained utilizing pit-optimizer software (Whittle
Four-X) using appropriate mining and processing costs from the ongoing
Feasibility Study, a US$950/ounce gold price and a 0.36 g/t Au cut-off grade.
Within this open-pit shell, the measured and indicated gold resource in the 2010
Resource Estimate has increased by 537,400 ounces, from 268,800 ounces to
806,200 ounces, a 200% increase compared to the 2009 Resource Estimate.
Below the open-pit shell and excluding a 15-metre crown pillar, a
higher-grade cut-off was utilized (1.09 g/t Au), based on potential economic
parameters along with engineering considerations, to define a resource with
underground mining potential.
Mr.
Dino Titaro, President and CEO of the Corporation commented: “We are
exceptionally pleased with this updated mineral resource estimate and the
significant conversion of the initial 2009 open-pit inferred resource, which was
utilized in the PEA study, into measured and indicated categories along with the
increase of the overall total contained gold ounces in the project.
This is very significant for the project and speaks to the continuity of
the gold mineralization and open-pit mineability which significantly de-risks
project development. In
addition to the updated resource estimate and the strong conversion of inferred
resources to measured and indicated, which has been a primary objective since
the announcement of the PEA study in August of last year, we are near completion
of the feasibility study that will incorporate the updated measured and
indicated resource estimate. Also,
given our high conversion rate to measured and indicated further follow-up work,
upon completion of the feasibility study, will target the remaining 355,900
ounces of inferred in-pit resources for conversion to measure and indicated
which would add significantly to the mine-life.”
The gold mineralization at RDM is
shear-zone hosted, within a package of Precambrian aged metamorphic rocks.
This shear zone strikes 20 degrees and dips 40 to 50 degrees east.
Drilling has indicated that known gold mineralization is continuous over a
strike length of 2,000 metres and is open along strike and at depth.
The 2010 Resource Estimate lies within a
continuously mineralized gold zone of 2,000 metres in length that dips at 35 to
45 degrees to the southeast. The
open-pit portion of the resource extends from surface to a maximum vertical
depth of approximately 300 metres. The gold-mineralized shear-zone can
reach true-thicknesses of up to 35 metres, though a more typical thickness is 5
to15 metres at open-pit cut-off grades of 0.30 g/t Au.
In addition to this ‘main zone’, discrete ‘hanging-wall’ and ‘foot-wall’
gold mineral zones are modeled and are typically 2 to 5 metres true thickness.
The underground resource starts below the open-pit resource, taking into
account a 15-metre crown pillar, and extends down 290 metres, and locally
approximately 480 metres, below the pit.
Resource Growth Potential
The gold mineralization is situated
within a continuous 14.0 kilometre long shear zone hosted in Precambrian
metamorphic rocks with a demonstrated gold endowment.
This shear zone is fully covered by the Corporation’s mining concession
and exploration licenses that extend over a continuous length of approximately
30 kilometres covering an area of approximately 22,000 ha.
The most intensely explored zone and location of the current 2010
Resource Estimate only represents approximately 2.0 kilometres of the southern
portion of this shear zone. There
are numerous surface gold targets of similar gold grade that occur along strike
within this shear zone and to date a total of seven (7) exploration targets have
been outlined north of the open-pit resource area and one to the south.
The focus of the Corporation’s drill
programs thus far has been on resource definition, however, in the Phase II
drill program step-out drilling to the south extended the mineralization 280
metres south of the 2009 open-pit Resource Estimate and included the
intersection from drill hole FRM-159 with returned 5.5 metres at 1.72 g/t gold.
North of the resource and along strike, drill hole FRM-122 intersected 3
metres (down hole length) at 1.27 g/t Au, approximately 850 metres north of the
current 2010 Resource Estimate.
Further exploration drilling and evaluation is planned to extend the
mineralization as well as test the other exploration targets along this highly
prospective shear zone.
At the RDM deposit, the current
open-pit 2010 Resource Estimate includes inferred resources of 355,900 ounces of
gold. This inferred resource will be
further evaluated for resource category upgrade to extend mine-life and/or
increase annual production. The
Phase II drilling program demonstrated that to date, the conversion rate of
inferred to measured and indicated is well above 90%.
In addition to the strike extension
targets and defined satellite exploration targets, the gold mineralization at
RDM is also open at depth.
Once the open-pit is in
production the Corporation plans to evaluate the underground resource as defined
in the PEA study, which
demonstrated a good probability of additional higher-grade ounces from an
underground operation that could add to the overall operation both in terms of
extending the mine life of the project and potentially increasing the annual
production rate by an additional 50%.
Insufficient work has been
completed at this time to allow for this potential underground resource to be
included in the Feasibility Study.
The grade of this underground
mineralization is analogous to existing underground operating mines in Brazil,
such as Yamana Gold’s Fazenda Brasileiro and Jacobina mines.
Feasibility Study Progress Update
Carpathian has
retained an engineering and environmental consortium to complete the Feasibility
Study that includes: Tecnomin Projetos e Consultoria Ltda,
NCL Brasil Ltda, Golder Associates Brasil Consultoria e Projetos Ltda, and YKS
Services Ltda.
Final engineering, costing and mining
optimization studies are nearly completed. Completion of the Feasibility Study
is expected in the coming weeks.
A matrix of
cut-off versus grade-tonnages of the 2010 Resource Estimate is shown in tables
at end of the press release and demonstrates the flexibility of applying various
higher-grade cut-offs to optimize mill head grades.
As an example, utilizing a cut-off open-pit grade of 0.80 g/t Au, the
present open-pit resource includes 726,200 ounces gold in the measured and
indicated categories at 1.72 g/t Au and 328,700 ounces gold in the inferred
category at 1.76 g/t Au which is greater than the open-pit resources considered
in the PEA (all categories) of 806,700 ounces gold at 1.65 g/t Au.
Present mining studies are utilizing variable higher cut-off grades that
are expected to meet management’s target of +100,000 ounces gold production per
year.
Currently three
diamond-core rigs are drilling for ore-definition purposes in order to convert
inferred resource ‘pockets’ within the shallow portions of the open-pit as
defined in the 2010 Resource
Estimate to measured and indicated in order to be included in the Feasibility
Study. This will enhance the
early-stage economics of the mine life.
This program is expected to be finished in the coming weeks.
Resource Estimate Parameters and Assumptions
To generate the 2010 Resource Estimate the following data and
methods were used:
·
Mineral resources were estimated in
conformance with the CIM Mineral Resource and Mineral Reserve definitions
referred to in National Instrument 43–101, Standards of Disclosure for Mineral
Projects.
·
The Resource Estimate database includes
213 drill holes for a total of 31,463 metres completed by the Corporation (Phase
I and Phase II completed from late 2008 to early 2010).
This drilling is predominantly diamond drill core, but does include 9,542
metres of Reverse Circulation drilling mainly as pre-collars for diamond drill
holes. In addition, and following
validation, the Corporation re-sampled drill core from 149 drill holes completed
by Vale, a previous property owner, which represents a total of 24,267 metres
drilling. In total the drill hole
database includes 362 drill holes for 55,372 metres.
As part of the Phase II work program, the Corporation also completed 831
metres of trenching.
·
Sample preparation and gold assays were
conducted by independent ISO Certified international laboratories. A thorough
QA/QC program was in place during the drill program, which included the
insertion of standards, duplicates and blanks at regular intervals totalling 17%
of the submitted samples along with a check assay program from a secondary assay
laboratory with 3% check assays. A
review of the QA/QC database showed adequate levels of quality for the Resource
Estimate.
·
Densities were determined for a
representative number of rock and mineralization types using industry standard
methods. A total of 108 determinations exist in the database. The average value
for each modeled alteration type was applied to the block model.
·
Detailed geologic logging and sectional
interpretations led to the development of 3D (three-dimensional) domain models
of lithology and alteration types.
These geologic domains were utilized to constrain grade-shell solids with a
nominal cut-off of 0.30 g/t Au for the open-pit and 1.00 g/t Au for the
underground. Geologic interpretation
and modelling, 3D domain model building was carried-out by the Corporation’s
exploration team and audited by NCL.
The grades shells typically form stacked elongated tabular bodies.
In the open-pit, a main mineralized solid is bracketed by a thinner
footwall and hanging wall solids.
For
the underground model, a single main-zone grade-shell solid was adopted with a
localized hanging-wall zone of widths on the order of 1 to 8 metres, averaging
2.7 metres.
·
A geologic-model constrained block-model
was generated using Gemcom software.
Analyses of gold grade distributions and variography studies were utilized for
grade interpolation search parameters which used the Ordinary Kriging (“OK”)
method. Validation of OK through
various methods is completed prior to finalizing.
·
A pit
optimizer software (Whittle Four-X) was used to define the portions of the block
model with reasonable prospects of being economical by using open-pit methods,
as defined by the CIM code for mineral resources.
NCL adopted the following parameters for the Whittle:
o
Gold
price of US$950 /oz
o
Mining operating cost: US$1.20/tonne
o
Plant
operating cost including a CIL circuit: US$8.50 /tonne
o
G&A:
US$1.25/tonne ore
o
Gold
recovery (for all mineralization types based on metallurgical test work
completed by Carpathian) of 90%
o
For
the open-pit, pit slope angles of 40°, 45° and 50° (oxide, mixed and fresh rock
domains) were utilized
·
The
underground model was examined to justify the portions of the block model that
would support the necessary capital to develop them. The portions that were too
isolated or with insufficient grade or tonnage for underground mining were
categorized as waste. For the
underground model the following parameters were applied.
o
Gold
price of US$950 /oz
o
Mining operating cost: US$20.00/tonne
o
Plant
operating cost including a CIL circuit: US$8.50/tonne
o
G&A:
US$1.25/tonne ore
o
Gold
recovery: of 90%
o
15%
decline ramp costs: US$3,000/m
o
Level
development: US$2,500/m
o
Raise
bore costs: US$3,000/m
·
The resource classification for all
models was based on the geologic model in context of gold-grade continuity and
gold-grade variography studies to determine the parameters of a search
ellipsoid. The requirement for indicated resources is two drill holes from
within a search volume of 40 metre radius along plunge and 36 metre across
plunge. Measured resources has half of this range, also requiring two drill
holes and inferred resources are defined with a search volume of 100m x 75 m,
without restriction of number of drill holes.
Mr.
Rodrigo Mello, MAusIMM, Senior Geologist with NCL is the independent Qualified
Person responsible for the Mineral Resource Estimate.
The complete NI 43-101 compliant Technical Report will be filed on SEDAR
at
www.SEDAR.com
within 45 days.
Sample Protocol
Assay results are predominantly
from a half-core split (sawn) NQ drill core and sampled on a metre by metre
basis through the mineralized zone and into surrounding altered rock. In
addition, Reverse Circulation (“RC”) drilling through the mineralized zone is
sampled on a metre by metre basis and assayed only when dry samples are
collected. All samples collected
from RDM are prepared and assayed at the independent ISO Certified SGS
laboratory, located near Belo Horizonte, Brazil using industry standard fire
assay techniques for gold on 50-gram sample charges with AAS finish. Coarse
blanks, pulp blanks, pulp duplicates, and known gold standards are inserted on a
routine basis. Combined, they consist of 17% per cent of submitted samples. In
addition, on a periodic basis 3% of the crusher rejects are re-submitted and a
minimum of 3% of the pulps will be analyzed at the ISO Certified ALS Chemex
Laboratory near Belo Horizonte, Brazil for check assays.
Mr. Titaro, P.Geo., is the
qualified person (as defined in NI 43-101) overseeing the design and
implementation of the present exploration programs. He is responsible for
preparing the technical information contained in this news release.
Carpathian Gold is an exploration and development company whose
primary business interest is developing near-term gold production on its 100%
owned Riacho dos Machados gold project in Brazil along with progressing its
exploration and development plans on its 100% owned Rovina Valley Au-Cu project
located in Romania.
--------------------------------------------------------------------------------------------------------------------
The TSX does not accept responsibility
for the adequacy or accuracy of this news release.
For more information please contact:
|
Dino Titaro, President & CEO, Or Mike O’Brien, Manager
Investor Relations
Tel. +1 (416) 368-7744
Fax. +1 (416) 260-2243
e-mail: info@carpathiangold.com Website:
www.carpathiangold.com
|
Paradox Investor Relations, Montreal
Tel. +1 (514)
341-0408 or 1-866-460-0408 Fax. +1 (514) 341-1527
e-mail:
info@paradox-pr.ca
|
Toni Vallen Seton Services, UK
Tel. +44 207 224 8468
e-mail: toni@setonservices.co.uk
|
Forward-Looking Statements: This
press release includes certain statements that may be deemed "forward-looking
statements". Forward-looking statements are frequently characterized by words
such as “plan”, “expect”, “Project”, “intend”, “believe”, “anticipate”,
“estimate”, and other similar words, or statements that certain events or
conditions “may” or “will” occur. All statements in this release, other than
statements of historical facts, that address future exploration drilling,
exploration activities and events or developments that the Corporation expects,
are forward-looking statements. Although the Corporation believes the
expectations expressed in such forward-looking statements are based on
reasonable assumptions, such statements are not guarantees of future performance
and actual results or developments may differ materially from those in
forward-looking statements. Factors that could cause actual results to differ
materially from those in forward-looking statements include market prices,
exploitation and exploration successes, continued availability of capital and
financing, and general economic, market or business conditions. There can be no
assurance that forward-looking statements will prove to be accurate, as results
and future events could differ materially from those anticipated statements. The
Corporation undertakes no obligation to update forward-looking statements if
circumstances or management’s estimates or opinions should change. The reader is
cautioned not to place undue reliance on forward-looking statements.
RDM NI
43-101 Mineral Resources at Various Cut-off Grades, July 2010
Open-Pit Resource, within Whittle Four-X pit shell (utilizes economic parameters
and gold price of US$950/ounce gold).
Base-case cut-off grade is shaded.
|
Cut-Off Grade
|
Measured + Indicated
|
|
Inferred
|
|
|
Au (g/t)
|
Ktonnes
|
Au (g/t)
|
Au (Koz)
|
Ktonnes
|
Au (g/t)
|
Au (Koz)
|
|
1.10
|
9,727
|
1.99
|
623.0
|
4,595
|
1.98
|
291.9
|
|
0.95
|
11,385
|
1.85
|
677.7
|
5,080
|
1.88
|
307.8
|
|
0.80
|
13,113
|
1.72
|
726.2
|
5,824
|
1.76
|
328.7
|
|
0.65
|
14,810
|
1.61
|
765.8
|
6,437
|
1.66
|
343.3
|
|
0.50
|
16,319
|
1.51
|
793.7
|
6,917
|
1.58
|
352.2
|
|
0.36
|
17,191
|
1.46
|
806.2
|
7,178
|
1.54
|
355.9
|
Notes:
1) Rounding of tonnes as required by reporting guidelines may result in apparent
differences between tonnes, grade and contained metal content. 2) the resource
is combined of oxide, transitional and sulfide material.
Underground Resource beneath the Open-Pit Shell (US$950/ounce gold).
Base-case cut-off grade is shaded.
|
Cut-Off Grade
|
Measured + Indicated
|
|
Inferred
|
|
|
Au (g/t)
|
Ktonnes
|
Au (g/t)
|
Au (Koz)
|
Ktonnes
|
Au (g/t)
|
Au (Koz)
|
|
3.00
|
36
|
4.14
|
4.8
|
1,361
|
3.68
|
161.0
|
|
2.50
|
47
|
3.82
|
5.7
|
1,850
|
3.42
|
203.3
|
|
2.00
|
52
|
3.67
|
6.1
|
2,979
|
2.98
|
285.6
|
|
1.50
|
52
|
3.65
|
6.1
|
3,652
|
2.77
|
324.8
|
|
1.09
|
53
|
3.63
|
6.2
|
3,922
|
2.67
|
337.0
|
Notes:
1) Rounding of tonnes as required by reporting guidelines may result in apparent
differences between tonnes, grade and contained metal content. 2) all resource
is sulfide material.