Merc International Minerals Inc.

Merc International Minerals Inc.

September 16, 2009 08:30 ET

Merc Intersects 21.35 Grams Gold Per Tonne Over 5.0 Metres at Damoti; Reports New Gold Zone Discovery

TORONTO, ONTARIO--(Marketwire - Sept. 16, 2009) - Merc International Minerals Inc. ("Merc") (TSX VENTURE:MRK) released results today for four more drillholes from its ongoing gold resource expansion program on the Damoti Lake Gold Project in the Northwest Territories. Drillhole D09-382 returned 21.35 grams gold per tonne over 5.00 metres (including 39.6 grams gold per tonne over 2.65 metres), and intersected a new gold zone at depth within the west limb of the Horseshoe syncline that assayed 3.63 grams gold per tonne over 7.55 metres (including 12.02 grams gold per tonne over 1.10 metres). Approximately 40 meters northeast of the D09-382 west limb intersection, D09-384 intersected 18 meters grading 2.86 grams gold per tonne near the base of the west limb (including a 5.0 metres at 4.97 grams gold per tonne, 0.60 metres at 15.40 grams gold per tonne and 1.10 metres at 10.40 grams gold per tonne).

"These results are very encouraging as they continue to demonstrate the robust nature of gold mineralization within the iron formation on the property, and point to the untapped potential for additional discoveries along our 12 kilometres of strike length," stated President and CEO Dr. Michael Byron. "Our discovery of a new gold zone represents an exciting advancement at Damoti. Being the first significant intersection in the west limb of the fold, this entire limb is now open and highly prospective, thus strongly supporting the potential for ongoing resource expansion. We look forward to continued exploration work on this new zone," he added.

Results for Merc's initial seven drillholes were reported on August 25, 2009. Summarized highlights include 13.91 grams gold per tonne over 23.50 metres (including 20.95 grams gold per tonne over 9.60 metres) from hole D09-377 and 9.31 grams gold per tonne over 22.30 metres (including 22.06 grams gold per tonne over 4.60 metres) from hole D09-380. These short holes targeted shallow mineralization within the southern portion of the Horseshoe Zone, were intended to confirm some historic drill results, and to infill the current resource model presently being advanced by Merc.

Drilling is now focused on following the mineralization down plunge to the north and along the relatively untested western limb of the fold, and to infill priority target areas within the resource model.

Drill HoleFrom
Core Length(i)
including 168.50169.200.7015.90
D09-385exploration hole - no significant results

(i) Lengths are reported as core lengths. True widths are not known at this time.

Areas of significant iron formation hosted gold mineralization occur in association with the sulphide mineral pyrrhotite, and to a lessor extent, pyrite. Intense chloritic alteration and graphite are also prevalent and impart a distinctive dark green/black colouration to the core. Both are also observed in association with gold. Dr. Byron stated, "As both pyrrhotite and graphite are good conductors, we believe that a combination of magnetic and electromagnetic (EM) geophysical surveys should prove very effective for identifying and tracking this style of mineralization throughout our property."

The ongoing 2009 exploration program is designed to establish the basis from which to complete a mineral resource evaluation and preparation of a National Instrument (NI) 43-101 compliant technical report on the Damoti Lake Gold Project (News Release - September 14, 2009). To date approximately 4,800 metres have been drilled. The program is expected to be completed by early October.

In a recent news release (September 14, 2009) it was reported that Merc had retained SRK Consulting to complete a mineral resource evaluation and preparation of a National Instrument (NI) 43-101 compliant technical report. A new NI 43-101 compliant resource will use all drilling results to date and is expected to be completed early in 2010.

Quality Control

Merc International Minerals, Inc. has implemented a quality-control program to ensure best practice in the sampling and analysis of the drill core. NQ-size drill core is saw cut and half the drill core is sampled in standard intervals not exceeding 1.5 metres in length while core from the main mineralized horizons or core displaying visible gold or significant sulfides are sampled in greater detail generally not exceeding 1 metre in length. The remaining half core is stored in a secure location.

Core samples are transported in security-sealed bags for analyses at ALS Chemex Assay Laboratory in Vancouver, BC. ALS Chemex is an ISO 9001:2000 certified laboratory. Gold assaying is done by a fire assay - atomic absorption spectrometry method on a 30-gram charge of a 1000 gram pulp. Samples returning values exceeding 3 gpt Au are re-checked by fire assay with a gravimetric finish. Pulp and metallics assaying for gold is conducted on the entire pulverized sample for all samples within the main mineralized horizons and those samples with visible gold or significant sulfides.

As part of its QA/QC program, Merc International Minerals inserts external gold standards (low to high grade) and blanks every 20 samples. This is in addition to the standards, blanks and pulp duplicates inserted by ALS Chemex. In addition, samples of pulps have been collected from ten percent of all samples analyzed and will be submitted to a second independent laboratory for comparison purposes.

The Damoti Lake Gold Project is being supervised by William Waychison, M.Sc.A.,P.Geo, the Qualified Person (QP) for this project.

This news release may contain forward-looking statements based on assumptions and judgments of management regarding future events or results. Such statements are subject to a variety of risks and uncertainties which could cause actual events or results to differ materially from those reflected in the forward-looking statements. The Company disclaims any intention or obligation to revise or update such statements.

Neither TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release.

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