AMO Altan Rio Minerals Limited

Altan Rio Minerals Limited (TSX VENTURE:AMO) ("Altan Rio" or the "Company")
today announces the initiation of the first drilling campaign at the Khavchuu
gold exploration project ("Khavchuu"), which the Company currently has an option
to acquire 100% interest in, covering 7.14 km2 in Tov Aimag, northern Mongolia.
The project contains significant geophysical and gold-arsenic geochemical
anomalies in a Boroo mine type orogenic gold setting and has never been drilled.
The planned reconnaissance drilling is designed to test a large tract of geology
over an area of approximately 5 x 6 km, searching for key structural features
such as low-angle fault zones. Six holes encompassing 1,800 meters of diamond
core drilling are planned.


GEOLOGY 

The general geological setting at Khavchuu is very similar to Boroo and
surrounding deposits such as Ulaan Bulag. This geology is characterized by large
areas of Kharaa formation units (siltstone, sandstone, argillite) of probable
Middle Cambrian to Early Ordovician age, intruded by Middle-Late Ordovician
Boroo Complex granitoids and later probable Devonian units.


Economic gold mineralization in the district is dominated by large tonnage
quartz-sericite-sulfide (pyrite, arsenian pyrite and arsenopyrite dominate)
alteration zones, commonly known as "QSP", in granitoids. The QSP alteration is
readily imaged by IP surveys which show chargeability highs, and magnetic
surveys which show coincident moderate low zones (magnetite destruction). Where
bodies are exposed geochemistry shows robust gold and arsenic anomalies; where
covered the anomalies become very subtle. 


RECENT WORK 

Altan Rio performed rock sampling and detailed soil geochemical grids (approx.
1,200 samples) in 2011 in the northwestern quarter of the project. This work
showed robust arsenic anomalies coincident with IP chargeability highs, over
several NW oriented structures. Low-level gold anomalies were also present. This
combination - coincident gold, arsenic and IP highs - is fundamental to all
economic deposits discovered thus far in the Boroogol District. During sampling,
the team also discovered a small zone of quartz veining hosting visible gold.


THE TARGETS 

Three main areas will be drilled in our first effort to gain knowledge of the
subsurface stratigraphy and structure:


A - Target area A in the northwest part of the project has recently been
investigated by a large soil geochemical grid, producing Au and As soil
anomalies coincident with IP chargeability of both prospective amplitude and
promising size, therefore achieving a first-priority target status.
Near-vertical quartz veins in the area locally host visible gold and a gently
east-dipping low-angle fault zone has been mapped in the vicinity, which
projects at depth into the IP chargeability anomaly. Rock samples in the area
reach 0.11 ppm Au and 842 ppm As. Two holes are planned for about 600 m of
drilling.


B - Target area B in the northeast quarter, another prospective IP feature, has
been rock chip sampled where strong sericite alteration exists along a
high-angle structural fabric. The objective is to track the high-angle fabric
down structure to a possible intersection with a near-horizontal fault zone.
Rock samples in the area reach 0.15 ppm Au and 177 ppm As. Two holes are planned
for about 600 m of drilling. 


C - Target area C in the south part of the project appears similar geologically
to target area A, also hosting gold-bearing quartz veins, and represents a very
prospective IP feature in a Boroo complex granitoid - which has proven thus far
to be the preferred host unit for large gold deposits in the district. A
north-dipping near-horizontal structure has been mapped just south of the area,
and therefore projects at depth into the IP feature. Rock samples in the area
reach 0.14 ppm Au and 564 ppm As. Two holes are planned for about 600 m of
drilling.


Drilling is scheduled to begin in early March with two diamond core drills, and
be finished in about a month.


To view the Figures associated with this release, visit
http://media3.marketwire.com/docs/ALTAN0305.pdf.


About Altan Rio 

Altan Rio, founded in 2007, is based in Vancouver BC, Canada. The company
explores large-scale gold and copper projects in one of the world's most
prospective mineral regions: Mongolia. The Company's license holdings in
Mongolia, which total more than 153,310 hectares (378,873 acres), contain
significant zones of newly identified primary gold and copper mineralization
across a very large area of unexplored ground. 


Competent Person Statement

J. Kelly Cluer, a Qualified Person as defined by National Instrument 43-101, has
reviewed the preparation of the scientific and technical information in this
press release in respect to the Chandman-Yol Project.


On behalf of Altan Rio Minerals Limited,

Evan Jones, President & CEO

This press release may contain forward looking statements including those
describing Altan Rio's future plans and the expectations of management that a
stated result or condition will occur. Any statement addressing future events or
conditions necessarily involves inherent risk and uncertainty. Actual results
can differ materially from those anticipated by management at the time of
writing due to many factors, the majority of which are beyond the control of
Altan Rio and its management.

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