SPOKANE, WASHINGTON -- (MARKET WIRE) -- 05/08/07 -- MARIFIL MINES LTD. (TSX VENTURE: MFM)("Marifil" or "the Company") announces that preliminary assay results from its recently completed 28-hole drill program indicate significant indium, zinc and gold mineralization at its San Roque project, Rio Negro Province, Argentina. These latest results confirm previously reported findings in surface and trench samples (see Marifil News Releases of April 9 and February 15, 2007.)

Assay results from the first four diamond drill holes at San Roque show several important gold, indium, and zinc intercepts. (The balance of the assay results are in process at Alex Stewart Laboratory in Mendoza, Argentina and are expected later this month.) Results include:

Drill Hole      From - To     Interval       Au   Indium      Zinc
                                    (m)    (g/t)    (g/t)       (%)
-------------------------------------------------------------------

1           20.00 - 20.50         0.50     0.36      264      0.12

2           34.40 - 44.90        10.50     0.76      473      0.06

Including                         2.70     0.87    1,459      0.11

3           15.60 - 22.70         7.10     2.46        8      0.14

Including                         0.80     7.92       16      0.09

4           42.90 - 46.00         3.10     2.91      370      0.10

Including                         1.00     7.20      780      0.11

plus        66.80 - 66.80         1.00     0.19      207      4.42

plus        74.00 - 78.50         4.50     0.37      499      6.64

including                         0.90     1.31    1,160     14.81

plus        82.00 - 83.00         1.00     0.65      255      5.99

plus        86.00 - 87.00         1.00     0.22      551      7.92

This drilling has found significant intervals of zinc and indium, along with minor amounts of gold, silver, and copper as stockworks of sphalerite and base metal veinlets cutting wallrocks and apparently unrelated to the through-going quartz-breccia structures. Drilling has generally intercepted indium associated with gold and with zinc, although high indium values have not been found to correlate with relative values of these other metals. To date, the Company has only found high indium where it has also identified some low threshold of gold or zinc.

Commented John Hite, Marifil President, "This data suggests that, because the indium values do not correlate precisely with other elements or with geology, we may be dealing with a discrete indium mineral." He added, "We are speculating that some of the stockwork zinc-bearing veins could indicate that we are looking for a bulk tonnage zinc indium target and we plan to examine this concept very closely."

Company geologists are re-logging and re-interpreting the drill core in the light of these findings. This logging is expected to help identify any discrete indium minerals and to verify whether the presence of some of the other rarer elements suggests that zinc and indium may be related to a larger target either at depth or along the strike of the Del Indio vein. The Company plans to begin additional exploration immediately, including more trenching and a second drill campaign to test this theory.

Indium is a reasonably abundant but generally little known mineral used in the manufacture of semiconductors, high speed transistors, specialized solders and other specialized alloys. It is also used in the control rods for nuclear reactors. However, almost 50% of indium produced is used in the creation of thin-film coatings to make electronic devices such as thin-film solar panels and liquid crystal displays (LCDs), screens that transform electricity into light energy (i.e. television screens and computer monitors).

This press release has been reviewed and approved by John Hite, President of Marifil Mines Ltd. under whose direction the exploration program is being carried out. Mr. Hite is a Qualified Person as defined by National Instrument 43-101.

The statements made in this press release may contain forward-looking statements that may involve a number of risks and uncertainties. Actual events or results could differ materially from the Company's expectations and projections.

For further information regarding Marifil Mines Ltd., please refer to the Company's filings available on SEDAR (Http://www.sedar.com) or at Marifil's Website (Http://www.marifilmines.com.)

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

Contacts:
Marifil Mines Ltd.
John Hite
President
(509) 467-5200

Marifil Mines Ltd.
Greg Taylor
Investor Relations
Toronto Area (905) 337-8475
Email: gtaylor@marifilmines.com
Website: www.marifilmines.com