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Nov 22, 2004
Promising Porphyry Copper-Gold Prospect Defined at Lobo Project
Mindoro Resources Ltd. (TSX-V: MIO; Frankfurt: OLM) today announced preliminary results from ongoing induced polarization and magnetic geophysical surveys over the Lobo Project in the Philippines.

"The kinds of anomalies we're identifying indicate that there is very likely a porphyry copper-gold system, and possibly several systems, on the Lobo Project," said Tony Climie, President of Mindoro. "In this latest survey, the intense alteration and stacking of geophysical anomalies suggests a porphyry copper-gold system is centered under the Pica Prospect and we are most enthusiastic about drilling this target early in 2005."

The survey results announced today define a large, strong induced polarization chargeability anomaly, of from three to seven times background, and over an area of 700 meters by 500 meters, within a broader anomalous halo of one kilometer by one kilometer. A ground magnetic high anomaly is associated with the core of the chargeability anomaly. The chargeability forms a large bell-shaped anomaly flanked above by a high resistivity anomaly. These overlapping geophysical anomalies occur over a prominent hill referred to as the Pica Prospect and are consistent with the existence of a porphyry copper-gold system below.

Geological mapping indicates the resistivity anomaly is due to an extensive area of silica cap (see map on Batangas section of our website). At lower elevations, pervasive and intense quartz-clay-pyrite alteration has been mapped, with rare disseminated chalcopyrite (a copper sulphide mineral) appearing to increase with depth. The sulphides are the likely cause of the high chargeability anomaly. A six meter to 10 meter wide quartz-barite-(pyrite) epithermal stockwork has been mapped over approximately 800 meters. This is similar to gold, silver and copper-mineralized vein breccias currently being drilled by Mindoro elsewhere at Lobo.

There are numerous excellent examples of Philippine porphyry copper-gold deposits, including the RTZ/Lepanto Far Southeast deposit and the recent Anglo/Philex Boyongan and Bayugo discoveries; the Taysan deposit of Phelps Dodge is located only nine kilometers from Lobo.

Mindoro currently has two man-portable drill rigs testing epithermal gold targets at Lobo, and will be mobilizing a large capacity drill rig to test the Pica Prospect, as well as recently discovered high-grade epithermal gold mineralization at West Drift (see news release dated Nov. 8, 2004). Other magnetic high anomalies have been defined at Lobo (see map on Batangas section of the website) and Mindoro plans to investigate these by induced polarization surveying to locate other potential porphyry copper-gold targets.

The geophysical survey is being carried out by McPhar Geoservices (Philippines), Inc. of Manila, an ISO 9001:2000 company headed by Canadian geophysicist, Peter Smith. Work is carried out under the supervision Tony Climie P. Geol., a "qualified person" as defined by National Instrument 43-101.


ABOUT MINDORO

Mindoro is a Tier One Company trading on the TSX Venture Exchange (TSX-V: MIO) and the Frankfurt Stock Exchange (OLM). The Company is exploring for gold and gold-copper in the prolifically mineralized magmatic arcs of the Asia-Pacific Region. Mindoro has been active in the Philippines since 1996 and is presently focused on six promising projects in politically stable jurisdictions of the Philippines.
For further information, contact

Head Office
Penny Gould, Executive Vice President
Phone: (1-780) 413-8187
Fax: (1-780) 426-2716
Email: penny@mindoro.com
Website: http://www.mindoro.com

Investor Relations
Marshall Farris, Ascenta Capital Partners Inc.
Phone: (1-604) 628-5800
Toll Free: 1-866-684-4209
Email: info@ascentacapital.com

The TSX Venture Exchange has not reviewed and does not accept responsibility for the adequacy or accuracy of this release.
 
 

You can view the Next Press Releases item: Thu Nov 25, 2004, Extensive Anomalies Defined on Surigao Joint Venture Project

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