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Colibri Intersects High Grade, Near Surface Mineralization at Ramard;
1128 Grams Per Tonne Silver, 18% Zinc, and 6.64% Lead
Tuesday, May 17, 2011
Vancouver, British Columbia - May 17, 2011 Colibri Resource Corporation is pleased to report the initial results of a 2000 meter drilling program at the Ramard silver project, in Sonora, Mexico. The Ramard property (see www.colibriresource.com) consists of over 4000 hectares of mineral concessions located 100 km north of the city of Hermosillo, Sonora, wholly owned by Colibri's Mexican subsidiary, Minera Halcones. The Ramard property contains numerous historical artisanal silver mine workings. Assays have been returned from the first 5 of 29 drill holes all in the La Bronca Zone. Reported are the first five borings of the drill program that was recently completed.
Hole BRAPD1 was drilled vertically across an outcropping skarn/manto horizon that dips less than 20 degrees and is believed to be true width or close to true width (within 10%). It intersected 1m of 869.2 grams per tonne (gpt) silver, (28 troy ounces per metric tonne), 8.6% lead, 9.4% zinc, 557 parts per billion gold (0.557 gpt) between 6 and 7 meters below surface, within a 7 meter interval, it intersected 228.6 gpt silver (7.37 oz/tonne), 0.066% copper, 2.89% lead, 5.16% zinc, 266 ppb gold, (0.266 gpt).
BRAPD2 was targeted across the same structure as BRAPD1, 113 meters to the northwest along strike, also vertical. It cut 1128.2 gpt (36.4 oz/tonne), 567 ppb gold (0.567 gpt gold), 6.64% lead, 18.13% zinc between 17 and 18 meters below the surface, within an interval of 3 meters that averaged 741.7 gpt silver (23.93 oz/tonne), 5.79% lead, 10.52% zinc between 16 and 19 meters depth. BRAPD2 was terminated at 24 meters depth due to drilling conditions.
BRAPD3 was collared 87 meters from hole BRAPD1 and 26 meters from BRAPD2 (between holes 1 and 2), also vertical and targeted across the same structure. It cut 399.6 gpt silver, (12.9 oz/tonne), 2.62% lead, 19.89% zinc, 420 ppb gold (0.42 gpt), between 22 and 23 meters below surface within an interval of 5 meters that averages 112 ppb gold, 128.2 gpt silver, 0.97% lead, 5.65% zinc between 20 and 25 meters. These high grade intercepts in holes BRAPD1, 2 and 3 are thought to be on the same gently dipping manto horizon and represent close to true widths (within 10%), but this remains to be confirmed by further drilling. BRAPD3 also cut 100.2 gpt silver (3.23 oz/tonne), 4.81% lead, 1.67% zinc between 97 and 99 meters depth, and a completely different mineralized structure.
BRAPD4 was collared 15 meters south of BRAPD1, targeted at -60 degrees and cut 2m of 92 gpt silver between 21 and 23 meters depth, probably on the same horizon.
BRAPD5 was targeted 126 meters southeast from BRAPD1 (239 meters from BRAPD2) within the same skarn/manto system, also drilled vertically. It intersected lower grade disseminated mineralization between surface and 8 meters depth, 14.24 gpt silver, 0.14% lead, 2.34% zinc, plus at 80-81 meters depth, 488 gpt silver (15.74 oz/tonne), 1.75 % lead, 2.86% zinc, 244 ppb gold (0.244 gpt), within a 3 meter interval that averages 212.2 gpt silver (6.84 oz/tonne), 0.78% lead, 2.4% zinc, 102 ppb gold (0.1 gpt). This is a completely separate manto structure from the near surface intervals reported in holes 1-3 and may correlate with the interval between 97 and 98 meters in BRAPD3.
BRAPD Drill Borings-April 2011
| Drill Hole |
UTM |
Incline |
Total Depth (meters) |
Drill Interval (meters) |
Width (meters) |
Gold (ppb) |
Silver (gpt) |
Copper (percent) |
Lead (percent) |
Zinc (percent) |
| BRAPD1 |
518538E |
-90 |
100m |
1-100m |
99m |
34 |
21 |
<0.01 |
0.27 |
0.54 |
| |
3285415N |
|
|
silver averaged 17 gpt cut to 500 gpt maximum |
| |
|
|
includes |
1-8m |
7m |
266 |
229 |
0.07 |
2.89 |
5.16 |
| |
|
|
|
6-7m |
1m |
557 |
869 |
0.03 |
8.60 |
9.40 |
| |
|
|
|
30-32m |
2m |
46 |
85 |
<0.01 |
1.51 |
2.97 |
| |
|
|
|
84-99m |
15m |
23 |
9 |
<0.01 |
0.05 |
0.30 |
| |
|
|
|
|
|
|
|
|
|
|
| BRAPD2 |
518444E |
-90 |
24m |
0-24m |
24m |
51 |
97 |
0.01 |
0.78 |
1.51 |
| |
3285477N |
|
|
silver averaged 62 gpt cut to 500 gpt maximum |
| |
|
|
includes |
16-19 |
3m |
279 |
742 |
0.01 |
5.79 |
10.52 |
| |
|
|
|
17-18m |
1m |
567 |
1128 |
0.01 |
6.64 |
18.13 |
| |
|
|
|
|
|
|
|
|
|
|
| BRAPD3 |
518464E |
|
99m |
0-99m |
99m |
18 |
9 |
0.01 |
0.16 |
0.50 |
| |
3285460N |
-90 |
includes |
1-28m |
27m |
50 |
29 |
0.02 |
0.35 |
1.50 |
| |
|
|
|
20-25m |
5m |
112 |
128 |
0.07 |
0.97 |
5.65 |
| |
|
|
|
22-23m |
1m |
420 |
400 |
<0/01 |
2.62 |
19.89 |
| |
|
|
|
26-27m |
1m |
686 |
35 |
0.01 |
0.31 |
2.14 |
| |
|
|
|
97-99m |
2m |
20 |
58 |
0.03 |
3.04 |
1.67 |
| |
|
|
|
|
|
|
|
|
|
|
| BRAPD4 |
518448E |
-60 |
98m |
21-23m |
2m |
335 |
92 |
<0/01 |
0.9 |
0.06 |
| |
3285364N |
|
|
|
|
|
|
|
|
|
| |
|
|
|
|
|
|
|
|
|
|
| BRAPD5 |
518653E |
-90 |
98m |
0-98m |
98m |
10 |
9 |
0.03 |
0.04 |
0.32 |
| |
3285364N |
|
includes |
0-8m |
8m |
9 |
14 |
0.02 |
0.14 |
2.34 |
| |
|
|
|
79-82m |
3m |
102 |
212 |
<0.01 |
0.78 |
2.4 |
| |
|
|
|
80-81m |
1m |
244 |
488 |
<0.01 |
1.75 |
2.86 |
In addition to these high grade manto horizons there are broad intervals of low grade disseminated gold-silver-lead-zinc, for example in hole BRAPD1 between 84 and 99 meters averaging 22.8 ppb gold, 8.54 gpt silver, 0.05% lead, 0.3% silver. Every 1 meter sample (100 meters depth) in this hole returned anomalous concentrations of gold greater than 7 ppb, silver greater than 0.5 gpt, and zinc greater than 0.03 percent. The entire hole averages 33.9 ppb gold, 20.5 gpt silver, (uncut, 16.8 gpt if silver is cut to a maximum of 500 gpt), 0.27% lead, 0.54% zinc, between 1 and 100 meters depth, 99 meter interval.
These results illustrate the potential of the Ramard project, with both high grade manto horizons and widely distributed disseminated silver gold lead zinc. Access on the project is excellent, with a paved road less than 1 km from the drill sites and the railhead at the town of Carbo less than 10 kilometers distant. The company is waiting for analyses of the remainder of the drill holes.
Drilling was conducted using a direct circulation, rotating hammer, track mounted rig and Ingersoll Rand 750 cfm compressor. Drill hammer width is 4.5 inches. Samples were collected in a cyclone at one meter intervals and split with a Jones splitter. All samples were split on site with half of the sample kept for archival purposes. At least one duplicate sample was collected from all holes. Samples were taken directly to Inspectorate Laboratory sample preparation lab in Hermosillo, Sonora at the end on each days drilling. Sample pulps were analyzed by Inspectorate in their laboratory in Richmond, British Columbia using AuAg-1AT-GV for gold and silver and BM-AR-OR for copper, lead and zinc, quantitative procedures designed for ore grade samples.
Exploration was conducted under the supervision of J.J. Irwin, Ph.D.P.Geo. the qualified person under National Instrument 43-101 on this project.
For Further Information Please Contact:
Lance Geselbracht, P.E., President and Chief Executive Officer
Tel: (250) 755-7871
The TSX Venture Exchange has not reviewed and does not accept responsibility for the adequacy or accuracy of the contents herein.
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