Colibri Resource Corp. completes preliminary sampling and mapping of Leon Project, Sonora, Mexico.

    Listed TSX-V: CBI

    VANCOUVER, March 5 /CNW/ - Colibri Resource Corporation has completed a
program of rock chip sampling and geological mapping on the 3200 hectare Leon
site, a historic mining district in Sonora, Mexico. The Leon Project is held
by an option agreement to acquire 100% ownership between the Mexican
subsidiary of Colibri, Minera Halcones SA de CV, and a private Mexican
company. This property lies within the same metallogenic province and is on
strike with the El Creston porphyry Cu-Mo deposit 5 km to the east.
Exploration at the Leon Project has focused on a network of WSW-ENE trending
sheeted quartz veins and associated stockwork style quartz. There are numerous
artesanal mine workings in this district. Colibri has received assays for 280
rock chip samples over an area of approximately 1,000 hectares of the project
    Results outline at least 6 mineralized zones, (see maps on All samples consist of rock chips collected from
intervals between 1m and 3m in length.

    Highlights include:

    Zone 1, 35 rock chip samples over an area 800m by 200m, average 24ppb
            gold, 17 gpt silver
    Zone 2, 18 rock chip samples over an area 200m by 200m, average 7 ppb
            gold, 26 gpt silver
    Zone 3, 8 rock chip samples collected on a single vein plus stockwork
            structure 150m in strike length, average 282 ppb gold, 84 gpt
    Zone 4, 95 rock chip samples over an area of multiple parallel or sub
            parallel sheeted quartz veins and associated stockwork 1 km long
            and 300m wide, average 267 ppb gold, 50 gpt silver,
    Zone 5, 10 rock chip samples collected from 3 parallel structures over a
            strike length of 200m average 823 ppb gold, 166 gpt silver,
    Zone 6, 14 rock chip samples collected from 2 parallel structures 200m in
            strike length average 1.82 gpt gold, 140 gpt silver

    These results demonstrate the presence of widespread gold-silver
mineralization with local lead and zinc anomalies. At least 4 different target
areas have yielded sufficient concentrations and widths of mineralization to
define potential drill targets.
    New geological mapping (February, 2007) has extended the zones of
mineralization eastward and established structural and geometric connections
to the El Creston Cu-Mo deposit (see satellite image on Colibri website). Zone
7 has similar characteristics to Zones 1, 2, and 4. Zone 8 is probably a
continuation of Zone 6. Zone 9 encompasses a region of quartz veins with
visible stibnite and/or molybdenum. Several low-angle normal faults
(detachments) are now identified that accommodated extension of the region
during mineralization. These faults have effectively displaced the "roots" or
feeders of the El Creston deposit to the southwest where presently exposed as
Zones 1-6. The mineralized quartz veins are spatially and temporally
associated with rhyolite or dacite porphyries and porphyritic granite of
Tertiary age. Also important are fine-grained diorite intrusions, emplaced
late during mineralization. Further exploration work is ongoing throughout the
Leon Project.
    Exploration was conducted under the supervision of J.J. Irwin, B.Sc.,
Ph.D., the qualified person under National Instrument 43-101 on this project.

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

For further information:

For further information: Visit our website at or call Lance Geselbracht, P.E. at (604) 669-7591

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