Minera Andes announces a mineral resource estimate of 922 million tonnes of 0.55% copper at Los Azules

    TSX: MAI

    SPOKANE, WA, Sept. 8 /CNW/ - Minera Andes Inc. (TSX: MAI and US OTC:
MNEAF) is pleased to announce the results of an independent resource estimate
at the Los Azules Copper deposit located in western San Juan province,
Argentina. The Inferred Mineral Resource, at 0.35% total copper ("CuT")
cut-off, is defined by an area approximately 3.7 km by 1 km in size and
contains a high-grade near surface copper core in the north (see attached
drill map and long section). This resource estimate will form the basis of an
economic scoping study (NI-43-101 Preliminary Assessment) planned for
completion at yearend. In addition, the mineralized copper target remains open
to the north and at depth.
    At a 0.35% total copper cut-off, the Inferred Resource at Los Azules is
922 million tonnes grading 0.55% copper, containing 11.2 billion pounds of
    The mineral resource estimate at different copper cut off grades is
summarized in the table below.

    Cut-off grade   Inferred Resource   Average Grade     Contained copper
    (CuT)          (Millions of tonnes)    (CuT%)       (Billions of (lbs)
    0.20                1,680                0.42                15.6
    0.25                1,425                0.46                14.5
    0.30                1,171                0.50                12.9
    0.35                  922                0.55                11.2
    0.40                  727                0.60                 9.6
    0.50                  451                0.69                 6.9
    0.60                  273                0.78                 4.7
    0.70                  161                0.87                 3.1
    0.80                   93                0.97                 2.0

    Allen Ambrose, president of Minera Andes, said: "We are very pleased to
report on our continued success at Los Azules. This resource estimate
demonstrates that Los Azules ranks as one the largest new undeveloped copper
deposits in Argentina. At a cutoff grade of 0.8%Cu, the resource totals 93
million tonnes at a grade of 0.97%Cu, much of which occurs as a near surface,
high-grade core zone. The presence of a high-grade copper core is important in
that it could significantly enhance the project economics as a starter pit in
the early years of any potential mining operations."
    Robert Sim, P.Geo., an independent Qualified Person as defined by NI
43-101 with the assistance of Bruce Davis, FAusIMM, is responsible for the
mineral resource estimate. This estimate will be filed in a Technical Report,
compliant with NI 43-101, and posted on SEDAR within 45 days. Mr. Allen
Ambrose, president of Minera Andes, an appropriately Qualified Person as
defined by NI 43-101 for the Los Azules project, has reviewed and approved the
content of this press release.
    Minera Andes is advancing the Los Azules project under an option
agreement (see news release dated November 14, 2007) with Xstrata Copper, one
of the commodity business units within Xstrata plc (London Stock Exchange:
XTA.L and Zurich Stock Exchange: XTRZn.S). The scope and size potential of the
project increased dramatically in 2006 when the Minera Andes drilling
discovered a near surface high-grade area of copper mineralization, when
AZ-06-19 encountered 221 meters of mineralization averaging 1.62% copper that
was 200 meters from hole AZ-06-20 containing 173 meters of 1% copper.
    There are a total of 83 drill holes in the Los Azules database with a
cumulative length of 19,680 meters and a total of 10,919 samples analyzed for
total copper with an average individual sample length of 1.5 meters. A total
of 35 of the drill holes have some portion of the sample intervals tested for
sequential copper analysis. The resource estimate has been generated from
drill hole sample assay results and the interpretation of a geologic model
which relates to the spatial distribution of copper in the deposit. Grade
estimates have been made using ordinary kriging with a nominal block size of
20x20x15 meters.
    Drilling and sampling practices have been reviewed and are in accordance
with industry standards. Drill core samples were submitted to Alex Stewart
Assayers, Argentina, S.A. and to Acme Laboratories, in Mendoza, Argentina, for
sample pulp preparation and to Acme Laboratories in Chile and ALS Chemex
Laboratories in Chile for analysis. Bruce Davis has reviewed the results of
the control (QAQC) program and finds the data sufficiently accurate and
precise for use in resource estimation.
    Minera Andes is a gold, silver and copper exploration company working in
Argentina. The Company holds about 304,000 acres of mineral exploration land
in Argentina including the 49% owned San José silver/gold mine. In addition to
exploring the Los Azules copper project in San Juan province other exploration
properties, primarily silver and gold, are being evaluated in southern
Argentina. The Corporation presently has 189,456,935 shares issued and
    This news is submitted by Allen V. Ambrose, President and Director of
Minera Andes Inc.


    Caution Concerning Forward-Looking Statements:

    This press release contains certain "forward-looking statements",
including, but not limited to, the statements regarding the Company's
strategic plans, evolution of mineral resources and reserves, work programs,
development plans and exploration budgets. The forward-looking statements
express, as at the date of this press release, the Company's plans, estimates,
forecasts, projections, expectations or beliefs as to future events and
results. Forward-looking statements involve a number of risks and
uncertainties, and there can be no assurance that such statements will prove
to be accurate. Therefore, actual results and future events could differ
materially from those anticipated in such statements. Risks and uncertainties
that could cause results or future events to differ materially from current
expectations expressed or implied by the forward-looking statements include,
but are not limited to, factors associated with fluctuations in the market
price of base metals, mining industry risks, risks associated with foreign
operations, the state of the capital markets, environmental risks and hazards,
uncertainty as to calculation of mineral reserves, and other risks. Reference
is made to the risk factors and uncertainties described in the Company's
continuous disclosure record, a copy of which is available under the Company's
profile at www.sedar.com.

    Cautionary Note to U.S. Investors:

    The United States Securities and Exchange Commission (the "SEC") permits
mining companies, in their filings with the SEC, to disclose only those
mineral deposits with "mineral reserves" that a company can economically and
legally extract or produce. We use certain terms in this press release, such
as "mineral resources", that the SEC guidelines strictly prohibit us from
including in our filings with the SEC.

For further information:

For further information: Art Johnson at the Spokane office; or Krister
A. Kottmeier, investor relations, Canada, at the Vancouver office; Visit our
Web site: www.minandes.com; Spokane Office, 111 East Magnesium Road, Ste. A,
Spokane, WA 99208, USA, Phone: (509) 921-7322, E-mail: info@minandes.com;
Vancouver Office, 911-470 Granville Street, Vancouver, B.C., V6C 1V5, Phone:
(604) 689-7017, (877) 689-7018, E-mail: ircanada@minandes.com

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