Shares Listed: Toronto Stock Exchange - Ticker Symbol - ARZ
NYSE Amex: - Ticker Symbol - AZK
U.S. Registration: (File 001-31893)
News Release Issue # 29 - 2010
VANCOUVER, Oct. 27 /PRNewswire/ - Aurizon Mines Ltd. (TSX:
ARZ; NYSE Amex: AZK) is pleased to report that an updated mineral
resource estimate has been completed for the Principal Area at its
Casa Berardi Mine, in north-western Québec. The updated mineral
resource estimate was prepared by Scott Wilson Roscoe Postle
Associates Inc ("Scott Wilson RPA") in collaboration with Aurizon's
personnel.
The updated mineral resource estimate integrates the results of
the 2009-2010 infill drill program that was completed last winter
in the Principal Area. It will be included in the Pre-feasibility
study of an open pit mining operation for the area that is
currently in progress.
The updated mineral resource estimate for the Principal Area
includes the following:
- A 94% increase (335,000 ounces) of in-pit measured and indicated
mineral resources to 5,345,000 tonnes at an average grade of
4.02 grams of gold per tonne or 690,000 ounces of gold (cut-off
grade: 0.86 g/t) when compared to the previous estimate as at
December 31, 2009.
- A decrease of 6% (-10,000 ounces) in underground measured and
indicated mineral resources outside the pit shell to 719,000 tonnes
at an average grade of 6.99 grams of gold per tonne or 162,000 ounces
of gold (cut-off grade of 4.0 g/t) when compared to the previous
estimate as at December 31, 2009.
The objectives of the infill drill program were to increase the
quantity and improve the quality of the mineral resources
previously defined in the Principal Area.
"The measured and indicated mineral resources have been
substantially increased in the Principal Area," said Martin Bergeron, P.Eng., Vice-President of
Operations. "This will have a very positive impact on the
Pre-feasibility study that is expected to be completed before the
end of this year," he added.
Table: Principal Area - Mineral Resources
-------------------------------------------------------------------------
Grade Cut- August 31, 2010
off ----------------------------------
(Gold g/t) Category
Tonnes Grade Gold
(t) (g/t) (oz)
--------------------------------------------------------------
Measured 163,000 6.85 36,000
0.86 Indicated 5,182,000 3.93 654,000
------------------------------------------------
In-Pit M + I 5,345,000 4.02 690,000
Inferred 1,366,000 2.96 130,000
--------------------------------------------------------------
Measured 95,000 6.80 21,000
4.0 Indicated 624,000 7.02 141,000
------------------------------------------------
Underground M + I 719,000 6.99 162,000
Inferred 446,000 6.60 95,000
--------------------------------------------------------------
Measured 258,000 6.83 57,000
Total In-Pit + Indicated 5,807,000 4.26 795,000
------------------------------------------------
Underground M + I 6,064,000 4.37 852,000
Inferred 1,812,000 3.86 225,000
--------------------------------------------------------------
Table: Principal Area - Mineral Resources
-------------------------------------------------------------------------
Grade Cut- December 31, 2009
off ----------------------------------
(Gold g/t) Category
Gain/Loss
Tonnes Grade Gold (oz)
(t) (g/t) (oz)
-------------------------------------------------------------------------
Measured 0 0.00 0 36,000
0.86 Indicated 1,785,000 6.19 355,000 299,000
-----------------------------------------------------------
In-Pit M + I 1,785,000 6.19 355,000 355,000
Inferred 841,000 5.97 161,000 (31,000)
-------------------------------------------------------------------------
Measured 0 0.00 0 21,000
4.0 Indicated 837,000 6.38 172,000 (31,000)
-----------------------------------------------------------
Underground M + I 837,000 6.38 172,000 (10,000)
Inferred 836,000 5.97 161,000 (66,000)
-------------------------------------------------------------------------
Measured 0 0.00 0 57,000
Total In-Pit + Indicated 2,622,000 6.25 527,000 268,000
-----------------------------------------------------------
Underground M + I 2,622,000 6.25 527,000 325,000
Inferred 1,678,000 5.97 322,000 (97,000)
-------------------------------------------------------------------------
The mineral resource estimate has been calculated using the
Canadian Institute of Mining, Metallurgy and Petroleum ("CIM")
Definitions Standards for mineral resources in accordance with
National Instrument 43-101 - Standards of Disclosure for Mineral
Projects.
The mineral resource estimates were estimated based on the
following geological and resource modeling parameters:
- A total of 38 lenses were interpreted on vertical cross-sections by
Casa Berardi geology personnel over a vertical distance of 500 metres
from surface, and over an east west distance of 950 metres. In
general, the drill hole spacing is sufficiently dense to confidently
interpret the quartz vein systems.
- A 3D wireframe was created using a minimum grade of 0.5 grams of gold
per tonne and a minimum horizontal width of 3 metres.
- Grade capping factors were applied to raw assays prior to compositing
and ranged from 15 to 75 grams of gold per tonne.
- Two metre composites were created inside each 3D solid, along drill
holes and block grades were estimated by inverse distance
interpolation with a search sphere of a 50 metre radius.
- Block volumes were converted to tonnages using a density determined
for each lense or group of lenses ranging from 2.69 to 2.95 tonnes
per cubic metre.
- Mineral resource classification is guided by drill hole spacing,
variogram range, and proximity to development that confirms the
continuity of mineralisation. Classification also takes into
consideration the distance of drill hole composites to block centres;
measured resources are up to a maximum of 15 metre mean distance of
composites to block centres; indicated resources are from 15 to 25
metres maximum mean distance; and inferred resources are from 25 to
50 metres maximum mean distance of composites to block centres.
- Scott Wilson RPA has evaluated the open pit potential by carrying out
a preliminary open pit optimization with Whittle software.
- The change in the August 31, 2010 mineral resources in comparison to
the December 31, 2009 mineral resources is explained by:
- Additional drilling.
- A lower cut-off used for geological interpretation.
- A higher gold price US$850/oz for Whittle pit optimization in 2010
compared to US$750/oz in 2009.
Geology
Gold mineralization occurs within multiple lenses located on
both sides of the Casa Berardi break and dips slightly to the
South. Mineralization is found in veins, stockworks and sulphide
rich replacement zones in a volcanic-sedimentary bearing
environment. The zones extend for more than 825 metres along the
entire length of the Principal Area deposit.
Outlook
The updated resource block model for the Principal Area will be
used in the Pre-feasibility study of an open pit mining operation,
currently in progress by BBA inc., Montreal, Quebec, and expected to be completed
by the end of the year. Additional surface and underground drilling
will be conducted during the winter to test the extensions of the
zones which remain open in all directions. The 600 metre extension
of the underground exploration drift at the 550 metre level has
recently been completed which will provide an access to verify the
continuity between the Principal Area and the 118, 120 and 123
Zones.
Quality Control and Qualified Person
Information on data verification, Quality Assurance and Quality
Control ("QA/QC"), can be found in the 'Technical Report on the
Casa Berardi Mine', dated February 9,
2009, which can be found under Aurizon's profile on
www.sedar.com. Information of a scientific or technical nature in
this news release has been prepared by or under the supervision of
Sylvain Picard, P. Eng., Principal
Production Geologist of the Company. Mineral resource estimates
were prepared by Bernard Salmon,
ing., General Manager - Quebec of
Scott Wilson RPA, a "qualified person" as defined by National
Instrument 43-101.
Additional Information
A sketch is attached showing the updated resource outline for
the Principal Area at the Casa Berardi Mine. All other information
previously released on Casa Berardi Mine is also available on
Aurizon's website at www.aurizon.com.
http://files.newswire.ca/734/Sketch_NR102710.pdf
About Aurizon
Aurizon is a gold producer with a growth strategy focused on
developing its existing projects in the Abitibi region of
north-western Quebec, one of the
world's most favourable mining jurisdictions and prolific gold and
base metal regions, and by increasing its asset base through
accretive transactions. Aurizon shares trade on the Toronto Stock
Exchange under the symbol "ARZ" and on the NYSE Amex under the
symbol "AZK". Additional information on Aurizon and its properties
is available on Aurizon's website at www.aurizon.com.
Forward Looking Statements and Information
This news release contains "forward-looking statements" and
"forward-looking information" within the meaning of applicable
securities regulations in Canada
and the United States
(collectively, "forward-looking information"). The forward-looking
information contained in this news release is made as of the date
of this news release. Except as required under applicable
securities legislation, the Company does not intend, and does not
assume any obligation, to update this forward-looking information.
Forward-looking information includes, but is not limited to,
statements regarding an updated mineral resource estimate for the
Principal Area at the Company's Casa Berardi Mine, the effects of
and timing of a pre-feasibility study on the Principal Area, timing
and expectations of future drilling and work programs, strategic
plans and expected outcomes. Often, but not always, forward-looking
information can be identified by the use of words such as "plans",
"expects, "is expected", "budget", "scheduled", "estimates",
forecasts", "intends", "anticipates", or "believes", or the
negatives thereof or variations of such words and phrases or
statements that certain actions, events or results "may", "could",
"would", "might", or "will" be taken, occur or be achieved.
The forward-looking information contained in this news release
is based on certain assumptions that the Company believes are
reasonable, including, with respect to mineral resource estimates,
the key assumptions and parameters on which such estimates are
based, as set out in this news release and the technical report for
the property, that the current price of and demand for gold will be
sustained or will improve, the supply of gold will remain stable,
that the general business and economic conditions will not change
in a material adverse manner, that financing will be available if
and when needed on reasonable terms and that the Company will not
experience any material accident, labour dispute, or failure of
plant or equipment.
However, forward-looking information involves known and unknown
risks, uncertainties and other factors which may cause the actual
results, performance or achievements of the Company to be
materially different from any future results, performance or
achievements expressed or implied by the forward-looking
information. Such factors include, among others, conclusions of
economic evaluations, the risk that actual results of exploration
activities will be different than anticipated, that cost of labour,
equipment or materials will increase more than expected, that the
future price of gold will decline, that the Canadian dollar will
strengthen against the U.S. dollar, that mineral resources and
reserves are not as estimated, that actual costs or actual results
of reclamation activities are greater than expected; that changes
in project parameters as plans continue to be refined may result in
increased costs, of unexpected variations in mineral resources and
reserves, grade or recovery rates, of failure of plant, equipment
or processes to operate as anticipated, of accidents, labour
disputes and other risks generally associated with mining,
unanticipated delays in obtaining governmental approvals or
financing or in the completion of development or construction
activities, as well as those factors and other risks more fully
described in Aurizon's Annual Information Form filed with the
securities commission of all of the provinces and territories of
Canada and in Aurizon's Annual
Report on Form 40-F filed with the United States Securities and
Exchange Commission, which are available on Sedar at www.sedar.com
and on Edgar at www.sec.gov/. Although the Company has attempted to
identify important factors that could cause actual actions, events
or results to differ materially from those described in
forward-looking information, there may be other factors that cause
actions, events or results to not be as anticipated, estimated or
intended. There can be no assurance that forward-looking
information will prove to be accurate, as actual results and future
events could differ materially from those anticipated in such
statements. Readers are cautioned not to place undue reliance on
forward-looking information due to the inherent uncertainty
thereof.
CAUTIONARY NOTE TO US READERS
As a Canadian reporting issuer, the Company is subject to rules,
policies and regulations issued by Canadian regulatory authorities
and is required to provide detailed information regarding its
properties including mineralization, drilling, sampling and
analysis, security of samples and mineral resource and mineral
reserve estimates. In addition, as a Canadian reporting issuer, the
Company is required to describe mineral resources associated with
its properties utilizing Canadian Institute of Mining, Metallurgy
and Petroleum ("CIM") definitions of "indicated" or "inferred",
which categories of resources are recognized by Canadian
regulations but are not recognized by the United States Securities
and Exchange Commission ("SEC").
The SEC allows mining companies, in their filings with the SEC
to disclose only those mineral deposits they can economically and
legally extract or produce. Accordingly, information contained in
this News Release regarding our mineral deposits may not be
comparable to similar information made public by U.S. companies
subject to the reporting and disclosure requirements under
the United States federal
securities laws and the rules and regulations of the Commission
thereunder.
In particular, this News Release uses the term "indicated"
resources. U.S. readers are cautioned that while that term is
recognized and required by Canadian regulations, the SEC does not
recognize it. U.S. investors are cautioned not to assume that any
part or all of mineral deposits in this category will ever be
converted into mineral reserves.
This News Release also uses the term "inferred" resources. U.S
readers are cautioned that while this term is recognized and
required by Canadian regulations, the SEC does not recognize it.
"Inferred resources" have a great amount of uncertainty as to their
existence, and great uncertainty as to their economic and legal
feasibility. It cannot be assumed that all or any part of an
inferred mineral resource will ever be upgraded to a higher
category. Under Canadian rules, estimates of inferred mineral
resources may not form the basis of feasibility or pre-feasibility
studies, except in rare cases. U.S. readers are cautioned not to
assume that part or all of an inferred resource exists, or is
economically or legally mineable.
SOURCE Aurizon Mines Ltd.
Copyright . 27 PR Newswire