International Minerals Corporation
FRANKFURT : MIW
TSX : IMZ
Swiss : IMZ

International Minerals Corporation

October 25, 2007 08:30 ET

International Minerals Reports Additional Drill Results at Antabamba Silver Project, Peru

SCOTTSDALE, ARIZONA--(Marketwire - Oct. 25, 2007) - International Minerals Corporation (IMZ) (TSX:IMZ)(SWX:IMZ)(FRANKFURT:MIW) has completed a first-phase drilling program totaling 4,472m in 25 core drill holes at the Antabamba Project in southern Peru, located approximately 65km northeast of IMZ's 40%-owned Pallancata silver mine (Hochschild Mining plc 60%).

A second-phase 1,300-meter (m) drilling campaign is currently underway at Antabamba to follow-up on drill results from the Victoria Vein (see news release dated July 26, 2007) in order to better define the geometry and possible extensions of the relatively small, well-mineralized zone encountered so far.

Newly-received assay results from drill holes in the Minaccasa and Natividad veins at Antabamba include several narrow, high-grade silver intercepts. Assay results (all uncut and representing estimated true widths) from all of the Minaccasa and Natividad drill holes are summarized in Table 1 and drill-hole locations are shown on a map available on the Company's website at http://www.intlminerals.com/press.php.

Minaccasa Vein

Nine drill holes (1,508m) were completed in the Minaccasa Vein. The most encouraging assay results were located in the northernmost drill holes approximately 1,000m to the northwest of the Victoria Vein area.

Significant assay results from the Minacassa Vein include:

2.1m grading 357 g/t silver and 2.2 g/t gold in drill hole Anta-20

0.8m grading 1,163 g/t silver and 2.7 g/t gold in Anta-20

0.6m grading 1,010 g/t silver and less than 1.0 g/t gold in Anta-20

0.4m grading 1,032 g/t silver and less than 1.0 g/t gold in Anta-21

IMZ is considering whether additional drilling is warranted in the Minaccasa area.

Natividad Vein

Four drill holes (575m) were completed in the Natividad vein, located to the east of the Minaccasa Vein. Significant assay results from narrow intercepts include:

0.5m grading 678 g/t silver and less than 1.0 g/t gold in Anta-22

0.2m grading 1,320 g/t silver and less than 1.0 g/t gold in Anta-24

Only a 100-meter strike length of the Natividad Vein was tested by IMZ during the first-phase drill campaign. IMZ is considering whether additional drilling is warranted in the Natividad Vein.

Victoria Vein

The higher-grade assay results from the 12 twelve drill holes (2,389m) in the first-phase phase drill program were previously announced in a news release dated July 26, 2007 and indicate a well-mineralized zone plunging shallowly to the west. This area is currently being followed up with additional drilling by IMZ. Results from the current second-phase drilling are expected before the end of 2007.

Results from the Victoria Vein included estimated true widths of 1.4m grading 646 g/t silver and 1.4 g/t gold in drill hole Anta-06 and 1.0 m grading 796 g/t silver and less than 1.0 g/t gold in Anta-07.

Barrick, Peru Agreement

The Antabamba property is held by IMZ under an option agreement with Barrick Gold Corporation's Peruvian subsidiary ("Barrick"). IMZ can acquire a 51% interest in the Antabamba property by completing 20,000m of drilling by September 2009, with a minimum of 4,000m by September 2007 (already completed) and an additional 6,000m by September 2008. Barrick has a one-time back-in right to increase its interest from 49% to 60% (and become operator) if IMZ has established a total mineral resource (measured, indicated or inferred) in excess of 2.0 million ounces of gold. As part of the back-in right, Barrick must pay three times IMZ's drilling costs. See news release dated May 10, 2007 for additional details of the agreement.

Drilling is being carried out by Bradley MDH S.A.C of Lima, Peru. Sample preparation and analytical work for IMC's drilling program were carried out by ALS Chemex in Lima, Peru using industry-standard sampling practices and analytical methods.

The technical information presented in this news release has been reviewed and verified by IMZ's Qualified Person, Exploration Manager Mark Cannuli.

ON BEHALF OF THE BOARD

Stephen J. Kay, President and CEO



Minaccasa Vein - Significant Mineralized Intervals
--------------------------------------------------

-----------------------------------------------------------------
True
Drill From To Intercept Width Gold Silver
Hole (m) (m) (m) (m) (g/t) (g/t)
-----------------------------------------------------------------
Anta-13 50.9 51.9 1.1 1.0 0.2 218
-----------------------------------------------------------------
Anta-14 103.0 103.1 0.2 0.2 0.0 619
-----------------------------------------------------------------
Anta-15 No significant Results
-----------------------------------------------------------------
Anta-16 30.2 30.9 0.7 0.7 1.4 248
-----------------------------------------------------------------
Anta-16 105.0 105.3 0.3 0.3 0.4 225
-----------------------------------------------------------------
Anta-16 108.5 106.8 0.4 0.3 1.3 344
-----------------------------------------------------------------
Anta-17 64.0 65.6 1.6 1.6 1.1 151
-----------------------------------------------------------------
Anta-18 No Significant Results
-----------------------------------------------------------------
Anta-19 45.9 46.4 0.5 0.4 1.4 213
-----------------------------------------------------------------
Anta-19 77.2 77.4 0.3 0.2 4.4 166
-----------------------------------------------------------------
Anta-20 12.4 12.7 0.3 0.2 0.2 698
-----------------------------------------------------------------
Anta-20 95.2 95.9 0.6 0.6 0.8 1,010
-----------------------------------------------------------------
Anta-20 106.1 107.0 0.9 0.8 2.7 1,163
-----------------------------------------------------------------
Includes: 106.7 107.0 0.3 0.2 7.3 3,970
-----------------------------------------------------------------
Anta-20 114.1 116.2 2.1 2.1 2.2 357
-----------------------------------------------------------------
Anta-21 38.9 39.7 0.8 0.4 0.5 1,032
-----------------------------------------------------------------
Anta-21 118.5 118.9 0.5 0.2 1.3 464
-----------------------------------------------------------------


Natividad Vein - Significant Mineralized Intervals
--------------------------------------------------

-----------------------------------------------------------------
True
Drill From To Intercept Width Gold Silver
Hole (m) (m) (m) (m) (g/t) (g/t)
-----------------------------------------------------------------
Anta-22 109.7 110.2 0.5 0.4 2.9 188
-----------------------------------------------------------------
Anta-22 111.0 111.3 0.3 0.3 1.2 396
-----------------------------------------------------------------
Anta-22 126.2 126.8 0.5 0.5 0.3 678
-----------------------------------------------------------------
Anta-23 No Significant Results
-----------------------------------------------------------------
Anta-24 89.5 89.8 0.3 0.2 0.1 1,320
-----------------------------------------------------------------
Anta-25 121.8 122.4 0.5 0.3 0.2 131
-----------------------------------------------------------------


The Toronto, Swiss and Frankfurt Stock Exchanges neither approve nor disapprove the information contained in this News Release.

Contact Information