Expands Known Mineralization at Columba Project, Chihuahua, Mexico: Four Drill Holes Report Highs to 2,370 gpt Silver and 6.7% Lead-Zinc
Drill Highlights include;
-
Hole CDH-24-171 Hit three significant composited intervals within a continuously mineralized 87.6 meters long mineralized envelope plus two more narrow high grade zones.
First Zone – Hangingwall- 1,134 gpt silver, 0.8 % lead and 3.4 % zinc over 2.6 meters core length (2.17 meters estimated true width ("e.t.w")) from 256.4 meters downhole includes;
- 2,370 gpt silver, 1.2% lead and 5.5% zinc over 0.5 meters (0.42 meters e.t.w.) from 257.5 meters downhole
Second Zone – Hangingwall- 298 gpt silver, 1.3 % lead and 0.6 % zinc over 7.78 meters core length (6.48 meters e.t.w) from 268.5 meters downhole includes;
- 627 gpt silver, 2.5% lead and 0.5% zinc over 3.14 meters of core length (2.62 meters e.t.w.) from 272.5 meters downhole
- 1,525 gpt silver, 1.3% lead and 0.2% zinc over 0.6 meters (0.53 meters e.t.w.) from 275 meters downhole
Third Zone – D-Vein- 338 gpt silver, 0.4% lead and 1.1% zinc over 18 meters core length (15.0 meters e.t.w) from 315 meters downhole includes;
- 484 gpt silver, 0.49% lead and 1.42% zinc over 11.2 meters core length (9.34 meters e.t.w.) from 315 metres downhole
- 923 gpt silver, 0.8% lead and 2.5% zinc over 1.5 meters core length (1.20 meters e.t.w) from 319.5 meters downhole
- Plus the two narrow veins
- Footwall 487 gpt silver, 0.5% lead and 1.1% zinc over 3 meters core length (2.4 meters e.t.w.)
- Hangingwall 976 gpt silver, 1.5% lead and 4.8% zinc over 0.5 meters core length (0.4 meters e.t.w.) within 369 gpt silver, 0.6% lead and 1.8% zinc over 1.5 meters of core length (1.2 meters e.t.w.).
-
Hole CDH-24-173 Intersected 5 high grade intervals in the hangingwall above the D-vein and one in the footwall below it.
- Hangingwall intervals
- 401 gpt, 0.2% lead and 0.4% zinc over 2 meters core length (1.52 meters e.t.w) from 221 meters downhole
- 142 gpt silver, 0.1% lead and 0.4% Zinc over 9.42 meters core length (7.14 meters e.t.w.) from 236 meters downhole including 377 gpt silver, 0.3% lead and 2.8% zincover 2.49 meters (1.89 meters e.t.w.) from 241.13 meters downhole
- 459 gpt silver, 0.3% lead and 0.6% zinc over1.0 meters core length (0.76 meters e.t.w.) from 259 meters downhole
- 796 gpt silver, 0.6% lead, 2.2% zinc over0.7 meters core length (0.53 meters e.t.w.) from 282.11 meters downhole
- 679 gpt silver over 1 meter (0.76 meters e.t.w.) from 291 meters downhole
-
D-Vein
- 162 gpt silver, 0.4% lead and 1.4% zinc over 5.28 meters core length of (4.0 meters e.t.w.) from 301.5 meters downhole
- 162 gpt silver, 0.4% lead and 1.4% zinc over 5.28 meters core length of (4.0 meters e.t.w.) from 301.5 meters downhole
- Footwall Vein
- 1,070 gpt silver, 4.2% lead, 1.7% zinc over 0.5 meters core length (0.38 meters e.t.w.) from 362.5 meters downhole
- Hangingwall intervals
Current batch of drill results from drill holes CDH-24-170 to 173 are tabulated below. Drill highlights, maps and sections from the project are tabulated on the Company's website at the links below
Click to view the drill plan, long section, and cross sections.
Hole ID |
From |
To (meters) |
Interval |
Est true1 |
Silver |
Pb % |
Zn% |
Geologic Intersection |
CDH-24-170 |
276.45 |
276.9 |
0.45 |
0.38 |
359 |
0.07 |
0.11 |
D-Vein extension |
and |
335.37 |
336 |
0.63 |
0.53 |
234 |
0.05 |
0.62 |
HW to D-Vein System |
and |
365.33 |
365.73 |
0.4 |
0.33 |
215 |
0.04 |
0.16 |
HW to D-Vein System |
CDH-24-171 |
256.4 |
259.0 |
2.6 |
2.17 |
1,334 |
0.82 |
3.41 |
Veining within D-Vein system |
includes |
257.5 |
258.0 |
0.5 |
0.42 |
2,370 |
1.19 |
5.47 |
Veining within D-Vein system |
and |
263.0 |
266.0 |
3.0 |
2.50
|
117 |
1.08 |
0.34 |
Veining within D-Vein system |
and |
268.5 |
276.3 |
7.8 |
6.48 |
298 |
1.30 |
0.55 |
Veining within D-Vein system |
includes |
272.5 |
275.6 |
3.1 |
2.62 |
627 |
2.47 |
0.53 |
Veining within D-Vein system |
includes |
275.0 |
275.6 |
0.6 |
0.53 |
1,525 |
1.31 |
0.24 |
Veining within D-Vein system |
and |
304.0 |
305.5 |
1.5 |
1.25 |
369 |
0.57 |
1.76 |
Veining within D-Vein system |
includes |
304.0 |
304.5 |
0.5 |
0.42 |
976 |
1.50 |
4.81 |
Veining within D-Vein system |
and |
315.0 |
332.0 |
18.0 |
15.0 |
338 |
0.35 |
1.06 |
Veining within D-Vein system |
includes |
315.0 |
326.21 |
11.21 |
9.34
|
484 |
0.49 |
1.42 |
Veining within D-Vein system |
includes |
319.5 |
321.0 |
1.5 |
1.20
|
923 |
0.83 |
2.51 |
Veining within D-Vein system |
and |
339.0 |
342.0 |
3.0 |
2.50 |
487 |
0.47 |
1.13 |
Veining within D-Vein system |
CDH-24-172 |
340.0 |
342.0 |
2.0 |
1.67 |
312 |
0.07 |
0.38 |
B-Vein corridor |
and |
352.0 |
369.0 |
17.0 |
14.17 |
60 |
0.03 |
0.12 |
B-Vein corridor |
and |
553.1 |
556.13 |
3.03 |
2.51 |
89 |
0.04 |
0.25 |
FW D-Vein |
CDH-24-173 |
221.0 |
223.0 |
2.0 |
1.52 |
401 |
0.19 |
0.36 |
HW to D-Vein |
and |
236.0 |
245.4 |
9.4 |
7.14 |
142 |
0.11 |
0.58 |
Calcite Qz Vein HW to D-Vein |
includes |
241.1 |
243.6 |
2.5 |
1.89 |
377 |
0.29 |
1.85 |
Calcite Qz Vein HW to D-Vein |
and |
259.0 |
260.0 |
1.0 |
0.76 |
459 |
0.28 |
0.58 |
Calcite Qz Vein HW to D-Vein |
and |
282.1 |
282.8 |
0.7 |
0.53
|
796 |
0.56 |
2.16 |
Calcite Qz Vein HW to D-Vein |
and |
291.0 |
292.0 |
1.0 |
0.76 |
679 |
0.32 |
0.47 |
Calcite Qz Vein HW to D-Vein |
and |
301.5 |
306.8 |
5.3 |
4.00 |
162 |
0.44 |
1.42 |
D-Vein |
and |
319.0 |
329.0 |
10.0 |
7.58 |
84 |
0.11 |
0.21 |
Footwall to D-Vein system |
and |
362.5 |
363.0 |
0.5 |
0.38 |
1,070 |
4.24 |
1.72 |
Footwall to D-Vein |
1 Estimated true widths are based on current interpretation of mineralized structures. |
The 2024 drill program continues with two diamond drills with over 10,000 meters and 29 holes this year. The 2024 exploration work has almost tripled the known strike length of D-Vein which is mineralized for approximately 1,275 meters. D-Vein is just one of several high priority targets at Columba and boasts some of the most striking results on the project. The current program is part of a fully funded follow up program of 20,000 meters, aimed to culminate in a maiden resource.
Prospective veins on the project are hosted within a volcanic caldera setting, the surface extent of mapped veins measuring roughly 4 kilometres by 3 kilometres. Management believes that Columba may be a newly recognized vein district that is nearly entirely preserved from erosion.
A comprehensive list of drill results completed on the Columba Property since 2019 may be viewed here: Columba Drill Results.
Sampling and QA/QC at Columba
All technical information for the Columba exploration program is obtained and reported under a formal quality assurance and quality control ("QA/QC") program. Samples are taken from core cut in half with a diamond saw under the direction of qualified geologists and engineers. Samples are then labeled, placed in plastic bags, sealed and with interval and sample numbers recorded. Samples are delivered by the Company to ALS Minerals ("ALS") in Chihuahua. The Company inserts blanks, standards and duplicates at regular intervals as follows. On average a blank is inserted every 100 samples beginning at the start of sampling and again when leaving the mineral zone. Standards are inserted when entering the potential mineralized zone and in the middle of them, on average one in every 25 samples is a standard. Duplicates are taken in the mineralized intervals at an average 2 duplicates for each hole.
The samples are dried, crushed and pulverized with the pulps being sent airfreight for analysis by ALS in
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