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Oct 04, 2005
Promising Porphyry Copper-Gold Target Confirmed at El Paso

Edmonton, AB: October 04, 2005 - Mindoro Resources Ltd. (TSXV: MIO; Frankfurt: OLM) is pleased to report that high-grade copper trench results, along with coincident soil copper and induced polarization anomalies, have confirmed the presence of a porphyry copper-gold target on the Company's El Paso Prospect in the Philippines. El Paso is located within the Batangas Projects, a 24,000 ha land package in southern Luzon which also includes the Lobo and Archangel Projects.

At El Paso, high copper values were obtained from channel / trench samples over long intervals. In the North Sector, an induced polarization (IP) survey over two lines defined chargeability and resistivity anomalies which are open and have coincident copper-in-soil anomalies. Phyllic and biotite alteration in the area confirm that El Paso is a porphyry copper-gold system. Additional soil and geophysical surveys are in progress to bring El Paso rapidly to the drill stage.

El Paso is located within a major structural boundary between the older San Juan Diorite basement to the northeast and younger intrusive and volcanic rocks to the southwest. The Taysan porphyry copper-gold deposit of Phelps Dodge also occurs in this very favorable structural setting, 11 kilometers to the northwest. Taysan has an estimated resource of 600 million tons grading 0.31 percent copper and 0.3 g/t gold and contains a higher grade section of 120 million tons grading 0.9 percent copper and 0.9 g/t gold (Chase Resources Engineering Report, 1995).

Work at El Paso indicates significant and widespread copper-gold mineralization occurs associated with the younger andesite porphyry intrusions, as well as the older, more eroded San Juan Diorite. The mineralization associated with the former is the principal target. Reconnaissance IP surveys defined chargeability and resistivity anomalies in the North Sector of El Paso. The IP expression resembles that of Philippine porphyry copper-gold systems. The anomalies are open to the north, west and east and the IP crew is being mobilized now to extend the survey. An orientation soil geochemistry line defined strong copper-in soil anomalies coincident with the IP anomalies. Phyllic and biotite-altered float have been found in the area, as well as copper mineralization in volcanics and intrusive rocks.

In the South Sector of the El Paso prospect, copper mineralization had been known historically and was tested with shallow drill holes by a previous operator in the mid-nineties. Results are unknown. However, the South Sector tested by drilling is not associated with significant IP anomalies and is considered to represent copper mineralization on the periphery of the porphyry copper-gold system. Current work is focusing 500 meters to the north, on the North Sector, , and extending north, east and west from there. Maps are being prepared which will be posted on the Mindoro website in due course.

The results of a trenching and channel sampling program, carried out in parts of both the North and South Sectors, appear in the accompanying table. High copper values in the 1% plus range were outlined in most trenches over lengths from three meters to 30 meters.
                                       LENGTH  COPPER   GOLD  SILVER
SECTOR  TRENCH NO.  EASTING  NORTHING      (m)     (%)  (g/t)   (g/t)
NORTH       TR N1/
          Channel     9420E     8660N      20   1.654   less
                                                       0.005    1.50
NORTH       TR N2/
          Channel     9385E     8640N      10   0.072   less    less
                                                        than    than
                                                       0.005     0.5
SOUTH       TR S1/
          Channel     9700E     8840N      10   5.689  1.016   24.05
SOUTH       TR S2/
          Channel     9745E     8885N      10   0.212  0.100    1.05
SOUTH       TR S3/
          Channel     9730E     8940N      20   1.301  0.097    8.40
SOUTH       TR S4/
          Channel     9755E     8945N       5   0.701  0.122    6.10
SOUTH       TR S5/
          Channel     9770E     9060N       5   0.825  0.342    1.80
SOUTH       TR S6/
          Channel     9830E     9000N      25   1.196  0.123   17.24
SOUTH       TR S7/
          Channel     9800E     9180N       3   0.118  0.036    less
SOUTH       TR S8/
          Channel     9600E     8960N       4   1.082  0.707    4.20
SOUTH       TR S9/
          Channel     9600E     8950N      20   0.873  0.313    3.43
SOUTH      TR S10/
          Channel     9615E     8940N      30   0.996  0.174    3.70
SOUTH      TR S11/
          Channel     9640E     9045N      20   0.417   less
                                                       0.005    1.00
El Paso brings the number of porphyry copper-gold targets defined on the Batangas Projects to approximately ten,. Drilling is in progress on the Pica Prospect, the first of these to be drill-tested. As reported on June 22, 2005, independent petrographic work on alteration and mineralization intersected in the first drill hole confirmed that Pica is a porphyry copper-gold system. A larger capacity drill rig, better able to handle the drilling conditions, was mobilized to the site in late August to commence drilling a second hole 150 meters away. Results from hole two will be reported in the near future

Work is carried out under the supervision of Tony Climie P. Geol., President of Mindoro, and a "qualified person" as defined by National Instrument 43-101.


Mindoro is a Tier One Company trading on the TSX Venture Exchange (TSXV: 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

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

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

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