Andina Minerals Inc.

Published : December 18th, 2009

Trenching at Ojo de Agua East Encounters Widespread Mineralization, Including 25 Metres at 1.35 g/t

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Andina Minerals

Andina Trenching at Ojo de Agua East Encounters Widespread Mineralization, Including 25 Metres at 1.35 g/t Gold

TORONTO, December 18, 2009 - ANDINA Minerals Inc. (TSX-V:ADM) (the �Company�) today announced initial results from the strategic exploration program at the Ojo de Agua East gold target, located at the Company�s Volcan Gold Project in Chile. The program included mapping, sampling and trenching and demonstrated the surface signature of gold mineralization over an area of approximately 0.4 km2. Ojo de Agua East is located on the properties acquired from Barrick earlier this year (see press release dated May 21, 2009), 2 km to the east of the Ojo de Agua area, where Andina has already identified an inferred resource of 18..6 million tonnes grading 0.85 grams per tonne (g/t) gold (Au) at a cut-off grade of 0.5 g/t being 510,000 ounces of gold. The Ojo de Agua East target is 6.5 km away from the Dorado deposits, which contain measured and indicated resources of 492.5 million tonnes at an average grade of 0.62 g/t Au being 9.8 million ounces of gold and are the focus of development studies by Andina. The main purpose of the Company�s 2009-2010 strategic exploration program is to identify higher grade mineralization in close proximity to the Dorado deposits.

�Our initial exploration confirms the potential of Ojo de Agua East to host significant mineralization,� said George Bee, President & CEO. �Based on these positive results, we have commenced drilling of the target to better define mineralization in the core area and expect to report results starting in February.�

Table 1: Trenching Results from the surface of the target Ojo de Agua East

Trench Extent of Mineralization (metres) Grade (g/t Au) Including (g/t Au)
Trench 1 475 0.076 15 m @ 0.17
90 m @ 0.22 + including
25 m @ 0.48
Trench 2 270 0.144 35 m @ 0.34
15 m @ 0.55
45 m @ 0.19
Trench Y 80 0.26 15 m@ 1.60
Trench CH 250 0.083 30 m @ 0.30
Trench C 130 0.36 25 m @ 1.35

All assays were performed by Geoanalitica, La Serena Chile.

Andina�s results demonstrate continuity of earlier discovered gold mineralization at Ojo de Agua East. All trench results show gold averages at or above 0.07 g/t; which has historically provided an important marker for the outer zone resource envelope of the Volcan gold deposits. The better grade sections of the trenches above the 0.10 g/t cut-off outline the top of a 500 by 200 metre zone (0.1 km2), which remains open to the North and East. Best grade intervals of 0.4 to 1.6 g/t gold at surface, though relatively short, are within a continuous package that indicates potential for discovery of good grade material near surface. The best grade trench result to date of 2.93 g/t over 5 metres demonstrates the possibilities, for higher grade material. Trenches were dug by bulldozers to bedrock where possible (there is a considerable thickness of overburden) and then sampled continuously across 5 metre intervals, to reflect in situ material. (For more details, click here to view Ojo de Agua East Exploration Map.)

Based on the trenching, mapping and sampling results to date, an initial RC drill program of approximately 1,200 metres in three drill holes has commenced at Ojo de Agua East in order to characterize the mineralization below Trench 1, Trench CH, C1 and the southern portion of Trench 2. Further drilling and geophysics is planned, pending initial drill results.

Ojo de Agua East Geology
The Ojo de Agua East alteration zone reflects the upper levels of a porphyry gold environment comparable to the Dorado West Top Zone. The Ojo de Agua East zone is characterized by the presence of two intrusions which cut altered volcanics of which the younger and less altered intrusion acts as the typical central heat engine for mineralization. This intrusion is more irregular than at Dorado but best grade mineralization is clearly associated to border zones with black and grey banded quartz veins, which is a characteristic pattern of all Dorado and Maricunga deposits. A previously unknown older intrusion is outcropping at the southern end of the target area. It is more altered and cut by magnetite�chlorite veinlets, indicating a deeper and hotter contact zone environment. Its relationship to the gold porphyries is not yet clearly understood. The volcanics which overlie the gold porphyries were affected by advanced argillic alteration and by wide spread steam heated alteration, which overlies the deeper gold porphyry environments.

Ojo de Agua Area Qualified Person
The trenching program at the Ojo de Agua area of the Volcan Gold Project was reviewed and the results approved by Mr. Michael Easdon, Andina�s Qualified Person under National Instrument 43-101. Mr. Easdon has been responsible for preparing technical information on the Ojo de Agua area of the Volcan Gold Project, which is disclosed in the Company�s annual information form for the year ended December 31, 2008 (dated April 8, 2009). Mr. Easdon has reviewed the contents of this press release.

QA/QC Protocols
The technical review of the Ojo de Agua area utilizes QA/QC (quality assurance and quality control) protocols for assaying and trenching samples. Grab samples are selected pieces of rock collected to identify or confirm anomalous or potentially economic concentrations of precious metals (Au, Ag), base metals (Cu, Mo, Zn, Pb), as well as path-finder elements commonly associated with epithermal mineralization (As, Sb, Hg, Ba). Chip-channel samples are one or more continuous samples of mineralized or altered rock collected with hammer and chisel over a measured interval and may be taken from areas of outcrop or from trenches. Sample locations are determined at the time of collection with handheld GPS readings. Andina does not intend to use the assay data obtained in this way from either chip channel (trenching) or grab samples in any calculation of resource estimates. The samples in this program have been collected to confirm previously reported exploration sampling results and to further identify areas of greater interest for more detailed future exploration and drilling.

All samples are delivered by the Corporation's personnel to the Geoanalitica sample preparation facility in Copiapo, Chile where they are crushed, pulverized and shipped by Geoanalitica to their assay facility located in Coquimbo. Geoanalitica analyses the samples for gold, copper and molybdenum. The gold assays are performed utilizing 30g fire assay with an atomic absorption spectroscopy (AAS) or gravimetric finish; the Cu and Mo are assayed for using standard wet analytical techniques. Sample pulp splits are subsequently sent by Geoanalitica to the ALS-Chemex laboratory (also in Coquimbo) for multi-element inductively coupled plasma (ICP) analysis.

About Andina Minerals Inc.
Andina�s primary focus is mining exploration and development in Chile. The Company�s flagship property is the 100%-owned Volcan Gold Project, strategically located in the prolific Maricunga Gold Belt. In September 2009, Andina provided an updated resource estimate for Volcan including measured and indicated mineral resources of 492.5 million tonnes at an average grade of 0.62 g/t Au for 9.8 million ounces of contained gold and inferred mineral resources of 36.8 million tonnes at an average grade of 0.65 g/t Au for 768,000 ounces of gold.

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Andina Minerals Inc.

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CODE : ADM.V
CUSIP : 034219105
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Andina Min. is a gold and silver exploration company based in .

Andina Min. holds various exploration projects in Chile.

Its main exploration properties are ENCRUCIJADA, PAMPA BUENOS AIRES and VOLCAN in Chile.

Andina Min. is listed in Canada and in United States of America. Its market capitalisation is CA$ 102.1 millions as of today (US$ 99.4 millions, € 74.4 millions).

Its stock quote reached its lowest recent point on December 30, 2005 at CA$ 0.07, and its highest recent level on December 31, 2007 at CA$ 5.50.

Andina Min. has 129 271 000 shares outstanding.

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