Listed TSX-V: CBI
VANCOUVER, March 12 /CNW/ - Colibri Resource Corporation has received
assays from percussion drilling of an additional 13 percussion drill holes
(RPD33 - RPD45) in a minimum 50 hole program on the Ramaje Ardiente (Ramard)
Project in Sonora, Mexico. The Ramard Project is held by an option agreement
to acquire 100% ownership of 8,419 hectares made between the Mexican
subsidiary of Colibri, Minera Halcones SA de CV, and a private Mexican
company. Exploration focus is on approximately 4 square km of skarn and
hornfels in Paleozoic sedimentary rock adjacent to felsic porphyry intrusive
rocks. The project covers the old "La Bronca" silver mines. All the holes were
drilled vertically into skarn beds that dip 15 to 20 degrees thus drill
intervals reported represent near true widths.
This recent drilling has expanded the known zones of "manto" style high
grade silver, lead and zinc to the west and northwest of prior drilling (see
drill hole location map posted on www.colibriresourcecorp.com). The
mineralized zone remains open in all directions (see News Releases of June 12,
2006, January 25, 2007, and February 12, 2007). Mineralization is present in
part as oxide form and part as galena and sphalerite with pyrite. Several
holes encountered difficult ground conditions and were terminated prior to
reaching target depths. Drilling is ongoing.
- RPD37 cut 453.9 gpt silver (13.3 ounces per short ton), 5.56% lead,
4.76% zinc over 3m between 19.5 and 22.5m depth. This intercept
occurs within an interval 13.5m long between 13.5m and 27m that
averages 126.8 gpt silver (3.7 ounces per short ton), 1.6% lead, 1.7%
- RPD42, cut 77 gpt silver, 1616 ppm copper, 0.92% lead, 11.42% zinc
over 6m between 21 and 27m depth. This intercept occurs within a 21m
interval that averages 28.2 gpt silver, 0.38% lead 4.53% zinc between
9 and 30m depth.
- RPD44, cut 193.9 gpt silver, (5.7 ounces per short ton) 2.03% lead
2.06% zinc over 3m between 21 and 24m depth. This hole occurs
directly along strike from holes RPD1, RPD2, RPD7, RPD8 and is
thought to cut the same mineralized "manto" horizon, extending its
apparent strike length to greater than 200m.
Conc. Conc. average average
location Silver Cu Conc. Conc.
Hole UTM Total interval width gpt ppm Lead % Zinc %
RPD33 518546E 18m 0-18m 18m 3.9 156 0.01 0.47
RPD34 518357E 27m 12-24m 12m 26.6 9.3 0.41 0.68
RPD35 518333E 30m 21-30m 9m 33 20 0.63 0.9
RPD36 518326E 31.5m 0-31.5m 31.5m 4 23.8 0.03 0.08
RPD37 518390E 30m 13.5-27m 13.5m 126.8 34 1.6 1.7
3285732N 19.5-22.5m 3m 453.9 37 5.56 4.76
RPD38 518398E 13.5m 12-13.5m 1.5m 2.7 29 0.08 0.61
RPD39 518379E 31.5m 12-13.5m 1.5m 10.4 11 0.17 0.83
3285739N 21-22.5m 1.5m 1.7 18 0.03 0.77
RPD40 518435E 18m No significant values
RPD41 518450E 24m 12-15m 3m 18.8 96.5 0.06 0.19
RPD42 518404E 30m 9-30m 21m 28.2 811 0.38 4.53
3285766N 21-27m 6m 77 1616 0.92 11.4
RPD43 518409E 31.5m 10.5-13.5m 3m 9.3 23.5 1.08 0.51
RPD44 518382E 31.5m 16.5-24m 7.5m 95.5 43.6 1.31 1.12
3285527N 21-24m 3m 193.9 87 2.03 2.06
RPD45 518381E 31.5m 21-24m 3m 36.3 743 2.04 1.41
Silver is reported as gpt, grams per metric Tonne, copper as parts per
million, zinc and lead in weight percent. Gold is not usually assayed due to
low concentrations anticipated in this geologic setting.
Air track percussion drilling utilizes a surface air driven hammer with
2.25 inch wide bit and associated compressor. Samples are typically 5 kg of
rock chips over 1.5m intervals. Each sample is split on site with a Jones
splitter and half of the sample taken to Sonora Sample Preparation Lab,
Hermosillo, Mexico, and then transported to Vancouver, B.C. by International
Plasma Labs. The remaining half of the bagged sample is stored in Hermosillo
for archival purposes.
J.J. Irwin, B.Sc., Ph.D. is the qualified person under national
instrument 43-101 and has reviewed this release.
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: Lance Geselbracht, P.E., (604) 669-7591;