Aurizon Mines Ltd. (TSX:ARZ)(NYSE MKT:AZK)(NYSE Amex:AZK) is
pleased to announce an updated mineral resource estimate for the
Marban deposit, located in the Malartic gold camp of Quebec's
Abitibi Region.
The updated mineral resource estimate was prepared by SGS Canada
Inc. - Geostat ("SGS Geostat"), in collaboration with Aurizon's
personnel.
Resource estimate from Phase One Drilling - Marban Deposit
The updated mineral resource estimate integrates the results of
all drill programs on the Marban deposit including those for the
mineral resource estimate prepared by Mine Development Associates
on December 1, 2009. In addition to 9 new holes drilled by Niogold,
a total of 137 new holes and 41,270 metres have been drilled during
the Phase One program between August 30, 2010 and August 9,
2011.
"This resource estimate primarily reflects Phase One drilling on
the Marban deposit, and confirms Aurizon's rationale of entering
into the earn-in with Niogold on the Marban property," said George
Paspalas, Aurizon's President and CEO, adding, "The continuity of
gold mineralization in the first 250 vertical metres has now been
confirmed, and the good metallurgy and moderate rock hardness
positions the deposit well for potential development. Our next step
will be to incorporate the Phase Two data into the resource
model."
Based on a cut-off grade of 0.35 grams of gold per tonne and a
high value capping of 25 grams of gold per tonne, the updated
In-pit mineral resources are estimated at 20,700,000 tonnes at 1.58
grams of gold per tonne or 1,053,000 ounces of gold in the measured
and indicated category and at 3,780,000 tonnes at 1.60 grams of
gold per tonne or 194,000 ounces of gold in the inferred category.
The resources, outside of the pit shell and using a cut-off grade
of 2.0 grams of gold per tonne, are estimated at 980,000 tonnes at
2.82 grams of gold per tonne or 89,000 ounces of gold in the
measured and indicated category plus 800,000 tonnes at 2.68 grams
of gold per tonne or 69,000 ounces of gold in the inferred
category.
Table 1: Marban Gold Deposit - In-Pit Mineral Resources
----------------------------------------------------------------------------
Mineral Resources as at September, 2012
----------------------------------------------------------------------------
Cut-off Grade
Gold Grade(2) Gold Gold(3)
grams/tonne Category Tonnes(1) grams/tonne Ounces
----------------------------------------------------------------------------
In-pit 0.35 M+I 20,700,000 1.58 1,053,000
----------------------------------------------------
Inferred 3,780,000 1.60 194,000
----------------------------------------------------------------------------
Underground 2.0 M+I 980,000 2.82 89,000
----------------------------------------------------
Inferred 800,000 2.68 69,000
----------------------------------------------------------------------------
Total M+I 21,670,000 1.64 1,141,000
----------------------------------------------------
Inferred 4,580,000 1.79 263,000
----------------------------------------------------------------------------
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.
Mineral resources which are not mineral reserves do not have demonstrated
economic viability.
Mineral resources update effective date: November 16, 2011.
(1) Rounded to nearest 10 thousand
(2) High value capping factor at 25 g/t Au on assays
(3) Rounded to nearest 1 thousand
"The Phase One drill program has substantially increased the
mineral resource base of the Marban deposit, primarily inside the
first 100 metres where the mineralization continuity had to be
proven A discovery cost of 5$/ounce proves the quality and the
potential of this deposit," said Martin Demers, P. Geo., General
Manager of Exploration.
The in-pit and underground resources have been estimated based
on the following parameters:
-- Two distinct mining scenarios: open-pit and underground. The open pit
mineral resources are reported within an initial Whittle pit shell;
-- The base case scenario was performed with a minimum cut-off grade of
0.35 grams of gold per tonne.
-- A total of 1,684 holes including 333 historical surface holes for a
total of 136,789 metres of surface drilling and 1,205 historical
underground holes for a total of 61,256 metres;
-- A total of 858 underground channels and chips samples.
-- A total of 107,904 assays which are available in the database;
-- A capping of 25 grams of gold per tonne was applied to the assays. The
results are presented as undiluted and in-situ;
-- The mineral resources were modeled and estimated using SGS Proprietary
software Genesis 1.0.17;
-- The mineral resource model was interpreted from 144 transverse sections
at intervals of 12.5 metres and from level plans at intervals of 5
metres;
-- The interpolation was conducted on composite assays of 2 metres in
length.
-- The interpolation was done by Ordinary Kriging in two stages: One block
model using mineralised envelopes for the high grade mineralisation
(greater than 0.5 grams of gold per tonne), and another block model for
the lower grade mineralisation located outside the defined mineralised
envelopes;
-- The block model was defined by blocks of 5 metres long by 5 metres wide
by 5 metres thick and covers a strike length of 1,400 metres to a
maximum depth of 700 metres below surface;
-- An average drill spacing of 25 metres x 25 metres was used for the
measured and indicated resources;
-- The average relative density used to calculate the tonnage of the Marban
deposit was adjusted to 2.77tonnes/cubic metre;
-- The historical Marban production was removed from the mineral resources.
-- The Whittle pit optimisation was performed by SGS Geostat using a gold
price of US$1,350 per ounce and an exchange rate of 1:1.
-- The simulated pit is 1,400 metres long, 850 metres wide and 350 metres
deep. The mineral resources located outside the Marban deposit optimised
pit shell is evaluated using an underground ("U/G") mining scenario, The
base case cut-off grade for U/G mineral resources at Marban has been set
at 2.0 grams of gold per tonne.
Sensitivity Analysis of the Resources
The mineral resource sensitivities are presented in the next 2
tables with different cut-off grades from 0.35 and 3.0 grams of
gold per tonne.
Table 2: Marban Deposit - In-Pit Mineral Resource
----------------------------------------------------------------------------
Cut-off Grade Grade(2) Gold Gold(3)
Gold grams/tonne Category Tonnes(1) grams/tonne Ounces
----------------------------------------------------------------------------
0.35 (Base Case) Measured 8,650,000 1.72 479,000
------------------------------------------------------------
Indicated 12,050,000 1.48 574,000
------------------------------------------------------------
M+I 20,700,000 1.58 1,053,000
------------------------------------------------------------
Inferred 3,780,000 1.60 194,000
----------------------------------------------------------------------------
0.5 Measured 8,500,000 1.75 477,000
------------------------------------------------------------
Indicated 11,990,000 1.49 573,000
------------------------------------------------------------
M+I 20,490,000 1.59 1,050,000
------------------------------------------------------------
Inferred 3,780,000 1.60 194,000
----------------------------------------------------------------------------
1.0 Measured 6,940,000 1.96 437,000
------------------------------------------------------------
Indicated 9,360,000 1.67 502,000
------------------------------------------------------------
M+I 16,300,000 1.79 938,000
------------------------------------------------------------
Inferred 3,090,000 1.77 176,000
----------------------------------------------------------------------------
(1) Rounded to nearest 10 thousand
(2) High value capping factor at 25 g/t Au on assays
(3) Rounded to nearest 1 thousand
Table 3: Marban Deposit - Underground Mineral Resource (Outside the pit
shell)
----------------------------------------------------------------------------
Cut-off Grade Grade(2) Gold Gold(3)
Gold grams/tonne Category Tonnes(1) grams/tonne Ounces
----------------------------------------------------------------------------
2.0 (Base Case) Measured 360,000 3.03 35,000
------------------------------------------------------------
Indicated 620,000 2.70 53,000
------------------------------------------------------------
M+I 980,000 2.82 89,000
------------------------------------------------------------
Inferred 800,000 2.68 69,000
----------------------------------------------------------------------------
2.5 Measured 220,000 3.55 25,000
------------------------------------------------------------
Indicated 290,000 3.26 30,000
------------------------------------------------------------
M+I 510,000 3.39 55,000
------------------------------------------------------------
Inferred 390,000 3.20 40,000
----------------------------------------------------------------------------
3.0 Measured 130,000 4.09 17,000
------------------------------------------------------------
Indicated 160,000 3.71 19,000
------------------------------------------------------------
M+I 290,000 3.88 36,000
------------------------------------------------------------
Inferred 190,000 3.73 22,000
----------------------------------------------------------------------------
(1) Rounded to nearest 10 thousand
(2) High value capping factor at 25 g/t Au on assays
(3) Rounded to nearest 1 thousand
Geology
The Marban mineralized system has a funnel shape corresponding
to a 400 to 700 metres wide folded structure in the upper part and
a more steeply dipping root at depth, with thicknesses in the range
of 100 to 200 metres. Mineralized zones and structures are
developed in east-west oriented schistosed basalt altered in
carbonate, chlorite and albite. Shear zones dip 45 degrees to 70
degrees to the north and are from 10 to over 70 meters wide. Gold
grade typically correlates with an increasing density of quartz
veining associated with disseminated pyrite and pyrrhotite. The
hanging wall and footwall are composed mainly of ultramafic
units.
The historical production from this mine is 1.98 million tonnes
at 5.27 grams of gold per tonne for 330,000 ounces produced.
Marban Property Mineral Resources
The Marban deposit currently represents the core of the mineral
resources located on the Marban property. The other sectors include
Norlartic, and Kieriens. The project comprises 3 mining lease and
42 claims covering 976 hectares.
The Norlartic and Kierens mineral resources were performed by
Mine Development Associates (MDA) December 1, 2009.
The following table provides the details of the total mineral
resources for the Marban property Project, including the August
2012 updated Marban deposit mineral resources:
Table 4: Marban Property Updated Mineral Resources
----------------------------------------------------------------------------
September, 2012
---------------------------------------------
Cut off Gold Grade Gold
Deposit grams/tonne Category Tonnes(1) grams/tonne Ounces(2)
----------------------------------------------------------------------------
Marban 0.35 M+I 20,700,000 1.58 1,053,000
In-Pit Inferred 3,780,000 1.60 194,000
------------------------------------------------------------------
2.0 M+I 980,000 2.82 89,000
Underground Inferred 800,000 2.68 69,000
----------------------------------------------------------------------------
Norlartic 0.5(3) M+I 5,420,000 1.82 316,000
Inferred 3,200,000 1.44 148,000
----------------------------------------------------------------------------
Kierens 0.5(3) M+I 1,440,000 2.19 101,000
Inferred 1,780,000 1.73 99,000
----------------------------------------------------------------------------
Total M+I 28,540,000 1.70 1,559,000
Inferred 9,560,000 1.66 510,000
----------------------------------------------------------------------------
----------------------------------------------------------------------------
December 1, 2009
---------------------------
Cut
off
Gold Grade
Cut off Gold grams/ grams/ Gold Gain
Deposit grams/tonne Category tonne Tonnes(1) tonne Ounces(2) Ounces(2)
----------------------------------------------------------------------------
Marban 0.35 M+I 1,053,000
In-Pit Inferred 194,000
------------------------------------------------------------------
2.0 M+I 2.5 1,240,000 4.55 181,000 (92,000)
Underground Inferred 870,000 4.08 114,000 (45,000)
----------------------------------------------------------------------------
Norlartic 0.5(3) M+I 0.5 5,420,000 1.82 316,000 -
(iii)
Inferred 3,200,000 1.44 148,000 -
----------------------------------------------------------------------------
Kierens 0.5(3) M+I 0.5 1,440,000 2.19 101,000 -
(iii)
Inferred 1,780,000 1.73 99,000 -
----------------------------------------------------------------------------
Total M+I 8,100,000 2.30 599,000 960,000
Inferred 5,850,000 1.92 361,000 149,000
----------------------------------------------------------------------------
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.
Mineral resources which are not mineral reserves do not have demonstrated
economic viability.
Mineral resources update for Marban gold deposit is effective date: November
16, 2011.
Mineral resources update for Norlartic and Kierens deposit is effective
date: December 1, 2009.
(1) Rounded to nearest 10 thousand
(2) Rounded to nearest 1 thousand
(3) 0.5 g/t Au cut-off on resources from surface to 200 metres vertically
and 2.5 g/t Au cut-off below 200 metres
Outlook - Phase Two Drill Program
The results of 90 holes and 9 extensions of previous holes of
the Phase Two drill program have successfully confirmed the
extension of the different zones of Marban mineralize system (see
the news releases dated March 1, April 26, June 12, and August 15
2012). The objectives of this program are to improve the quality of
the Marban near surface resources, develop a mineral inventory
below 250 metre vertical depth and outside the known lateral
extension.
The next step is to complete an updated mineral resource in
order to integrate the results of the Phase Two drill program.
The preliminary metallurgical testwork at Marban indicates a
favourable recovery between 95.4% to 97.6% for the ore cyanidation
test (see news release dated April 24, 2012). The Bond ball mill
testing indicated the ore fell in the medium soft to medium range
of hardness compared to the SGS database (10.1-10.9 kWh/t).
A baseline environmental study has been initiated and is being
prepared by Golder Associates and should be completed by the end of
the year.
Aurizon Option
Aurizon can earn up to a 65% interest the Marban Block property
under the terms of an option and joint venture agreement dated July
5, 2010, between NioGold Mining Corporation ("NioGold") and
Aurizon. The initial 50% interest can be earned by incurring
expenditures of $20 million over three years, completing an updated
NI 43-101 compliant mineral resource estimate, and by making a
resource payment for 50% of the total gold ounces defined by the
mineral resource estimate. NioGold is the project operator during
the initial earn-in period (see news release dated July 6,
2010).
Qualified Person and Quality Control
Information of a scientific or technical nature in this news
release has been prepared by or under the supervision of Ghislain
Fournier P. Eng., Technical Services General Manager and Martin
Demers P.Geo, Exploration General Manager. The current mineral
resource estimate of the Marban deposit was completed by Yann
Camus, Eng., from SGS Canada Inc. (SGS Geostat), an independent
Qualified Person under NI 43-101 guidelines using the Canadian
Institute of Mining, Metallurgy and Petroleum (CIM) Standards on
Mineral Resources and Reserves, Definitions and Guidelines prepared
by the CIM Standing Committee on Reserve Definitions and adopted by
the CIM Council on December 11, 2005. The effective date of the
estimate is November 16, 2011.
Additional Information
A sketch is attached showing the plan and longitudinal view of
the Marban Gold deposit with the outline of the in-pit and
underground resources. To view the sketch, please visit the
following link:
http://media3.marketwire.com/docs/arz-0907-sketch.pdf. All other
information previously released on Marban is also available on
Aurizon's website at www.aurizon.com.
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 MKT under the symbol "AZK". Additional information
on Aurizon and its properties is available on Aurizon's website at
www.aurizon.com.
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 is based on information available to the Company 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 in this news release includes estimates
of minerals resources, ore grades, estimated gold recoveries, the
possible effects of exploration success, if achieved, on
exploration of other areas of the Marban property, planned
exploration on the Marban property, and the business and operations
of Aurizon generally. 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", "has the
potential" 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.
Such forward-looking information is based on a number of
assumptions, including but not limited to those set out in this
news release and the Company's annual information form ("AIF") for
its most recent year end filed on SEDAR. Such assumptions include
those relating to US : Canadian dollar exchange rates, gold price
per ounce, anticipated fuel prices, that the Company's mine plan
and gold recoveries will be achieved, that pre-production capital
costs, operating costs and sustaining and restoration costs will be
as estimated, the availability of an experienced workforce and
suppliers for the project, that equipment will be available when
required and at estimated costs, that the assumptions underlying
mineral resource estimates are valid and that no unforeseen
accident, fire, ground instability, flooding, labor disruption,
equipment failure, metallurgical, environmental or other events
that could delay or increase the cost of development will occur,
that the results of exploration activities will be consistent with
the Company's expectations, 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, political and economic
conditions as well as those specific to the Company's operations
will not change in a material adverse manner, and that financing
will be available if and when needed on reasonable terms.
Forward-looking information is by its nature uncertain and
involves foreseeable and unforeseeable risks and other factors
which may cause the actual outcomes, costs, timing and performance
to be materially different from those anticipated by such
information. Such risks and factors include, among others, the risk
that any of the assumptions on which the forward looking
information is based prove to be incorrect or invalid, the risk 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, labor disputes, of
unanticipated delays in obtaining governmental approvals or
financing or in the completion of development or construction
activities, risk that estimated costs, including costs of labor,
equipment and materials, including power, are not as anticipated,
of an undiscovered defect in title or other adverse claim, that
results of exploration activities will be different than
anticipated, 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 of restoration activities are greater than expected and that
changes in project parameters as plans continue to be refined
result in increased costs There are a number of other risks and
uncertainties associated with exploration, development and mining
activities that may affect the reliability of the forward looking
information herein, including those described in Aurizon's AIF and
in Aurizon's Annual Report on Form 40-F ("40-F") filed with the
United States Securities and Exchange Commission. The AIF and 40-F
are available respectively on SEDAR at www.sedar.com and on EDGAR
at www.sec.gov/. There may be factors in addition to those
described herein or in the AIF or 40F that cause actions, events or
results not to be as anticipated, estimated or intended. 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.
U.S. Registration (File 001-31893)
Contacts: Aurizon Mines Ltd. George Paspalas President & CEO
604-687-6600 Aurizon Mines Ltd. Martin Bergeron Vice President
Operations 819-874-4511 Aurizon Mines Ltd. Investor
Relationsjennifer.north@aurizon.com Aurizon Mines Ltd. 604-687-6600
or Toll Free: 1-800-411-GOLD (4653) 604-687-3932
(FAX)info@aurizon.com www.aurizon.com
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