The best high-grade intercepts from these latest drill results at the El Silencio mine include:
- 1040 Vein, new discovery: 137.44 g/t Au and 10.1 g/t Ag over 0.56 meters (ES-GM-U51-20);
- 1150 Vein, new discovery: 93.19 g/t Au and <0.3 g/t Ag over 0.54 meters (ES-GM-U59-20);
- 1180 Vein: 73.03 g/t Au and 32.0 g/t Ag over 0.30 meters (ES-GM-U49-20); and
- Manto Vein: 44.49 g/t Au and 98.5 g/t Ag over 0.35 meters (ES-GM-U17-21).
The Company’s
Key Highlights
1040 Vein (New Discovery; Attachments 2 and 3)
Exploration and in-fill drilling on the northern sector of the Manto Vein System, from underground stations ES900N-A, ES710N-A, ES810N-A and ES610N-A, installed on levels 22, 25 (ES710N-A/ES810N-A) and 26, respectively, led to the discovery of a new high-grade vein called the 1040 Vein, which is an E-W trending structure, shallow-dipping to the NE, located in the footwall of the 1180 Vein and interpreted to merge into the Manto Vein System down-dip. Multiple high gold grades were intersected from 32 multi-target drill holes (6,900 meters) on the main vein system with maximum intersection grades of 137.44 g/t Au and 10.1 g/t Ag over 0.56 meters on the 1040 Vein (ES-GM-U51-20). The footprint of the orebody outlined on the 1040 Vein so far is over 500 meters down-dip by 200 meters wide, and it remains open up and down-dip. The 1040 Vein will be incorporated into the El Silencio mine plan through the ramp RP1130N from Level 31 to 38.
The discovery of this new orebody offers the potential for additional mineral resource growth and extension of the mine life.
1150 Vein (New Discovery; Attachments 2 and 3)
Exploration and in-fill drilling on the northern sector of the Manto Vein System, from underground stations ES710N-A and ES810N-A, installed on Level 25, led to the discovery of another new high-grade vein called the 1150 Vein, which occurs in the hanging-wall of the Manto Vein System and is interpreted as a splay off the Manto Vein. Multiple high gold grades were intersected from 21 multi-target drill holes (5,228 meters) on the main vein system with maximum intersection grades of 93.19 g/t Au and <0.3 g/t Ag over 0.54 meters on the 1150 Vein (ES-GM-U59-20).
Manto & 1180 Veins (Attachments 1 and 3)
In-fill exploration drilling on the northern block of the Manto Vein System, from underground stations ES900N-A, ES810N-A, ES872N-B and ES615N-A, installed on levels 22, 25 (ES810N-A/ES872N-B) and 26, respectively, was targeted to extend and better delineate the known ore-shoots on the Manto Vein, which is the master structure; and the 1180 Vein, which is a footwall splay off the Manto Vein. Drilling was successful in extending the Manto Vein’s ore-shoot from Level 25 to 28, and better delineated the ore-shoot on the 1180 Vein down-plunge. Multiple high gold grades were intersected from 45 multi-target drill holes (8,047 meters) on the main vein system with maximum intersection grades of 44.49 g/t Au and 98.5 g/t Ag over 0.35 meters on the Manto Vein (ES-GM-U17-21) and 73.03 g/t Au and 32.0 g/t Ag over 0.30 meters on the 1180 Vein (ES-GM-U17-21). High-grade mineralization associated with both ore-shoots remains open down-plunge and will be targeted by in-fill drilling in 2021.
The table below lists the key intercepts from the ongoing drilling campaign carried out in 2020-2021 by the Company’s
Hole | From (m) | To (m) | Width (m) | Au (g/t) | Ag (g/t) | Vein |
U- | ||||||
ES-GM-U03-20* | 49.80 | 50.20 | 0.40 | 11.52 | ** | VEM |
U- | ||||||
ES-GM-U09-21* | 133.08 | 133.70 | 0.62 | 12.07 | 14.2 | 1040 |
ES-GM-U12-21* | 106.81 | 107.85 | 1.04 | 40.63 | 60.7 | VEM |
ES-GM-U17-21* | 90.80 | 91.15 | 0.35 | 44.49 | 98.5 | VEM |
U- | ||||||
ES-GM-U02-21* | 93.59 | 93.95 | 0.36 | 28.02 | 68.5 | 1150 |
ES-GM-U05-21* | 109.44 | 109.80 | 0.36 | 6.57 | 9.6 | 1150 |
U- | ||||||
ES-GM-U01-21* | 112.10 | 112.80 | 0.70 | 74.39 | 154.5 | 1040 |
ES-GM-U04-21* | 128.45 | 130.18 | 1.73 | 35.18 | 30.8 | 1040 |
ES-GM-U06-21* | 116.64 | 116.95 | 0.31 | 14.88 | 27.3 | 1040 |
ES-GM-U63-20* | 145.22 | 145.76 | 0.54 | 31.29 | 38.0 | 1040 |
ES-GM-U64-20* | 123.78 | 124.48 | 0.70 | 13.74 | 10.5 | 1040 |
U- | ||||||
ES-GM-U07-20* | 79.70 | 80.00 | 0.30 | 18.24 | ** | 1180 |
ES-GM-U11-20* | 93.55 | 94.60 | 1.05 | 48.47 | ** | 1180 |
ES-GM-U12-20* | 92.00 | 92.95 | 0.95 | 7.74 | ** | 1180 |
ES-GM-U13-20* | 9.30 | 9.76 | 0.46 | 7.70 | ** | VEM |
ES-GM-U14-20* | 8.15 | 8.45 | 0.30 | 6.02 | ** | VEM |
ES-GM-U16-20* | 7.84 | 8.20 | 0.36 | 14.32 | ** | VEM |
U- | ||||||
ES-GM-U36-20* | 103.90 | 104.46 | 0.56 | 44.28 | ** | 1150 |
ES-GM-U37-20* | 86.56 | 86.90 | 0.34 | 18.34 | 8.4 | VEM |
ES-GM-U37-20* | 195.80 | 196.22 | 0.42 | 10.84 | 5.5 | 1040 |
ES-GM-U44-20* | 190.15 | 191.39 | 1.24 | 18.80 | 25.9 | 1180 |
ES-GM-U49-20* | 96.65 | 97.59 | 0.94 | 7.71 | 30.5 | 1150 |
ES-GM-U49-20* | 197.24 | 197.54 | 0.30 | 73.03 | 32.0 | 1180 |
ES-GM-U51-20* | 68.70 | 69.56 | 0.86 | 6.21 | 8.3 | 1150 |
ES-GM-U51-20* | 163.51 | 164.07 | 0.56 | 137.44 | 10.1 | 1040 |
ES-GM-U51-20* | 179.13 | 179.97 | 0.84 | 12.02 | 29.3 | SNO |
ES-GM-U59-20* | 61.20 | 61.74 | 0.54 | 93.19 | <0.3 | 1150 |
U- | ||||||
ES-GM-U52-20* | 40.03 | 40.33 | 0.30 | 8.37 | 1.9 | VEM |
ES-GM-U52-20* | 185.52 | 185.90 | 0.38 | 12.22 | 32.2 | 1180 |
U- | ||||||
ES-GM-U21-20* | 37.00 | 37.40 | 0.40 | 11.95 | 13.4 | VEM |
* Denotes underground drill holes. Underground drill holes coded as
** Silver was not assayed for these drill holes.
Vein name abbreviations: VEM: Manto Vein. 1180: 1180 Vein. 1150: 1150 Vein . 1040: 1040 Vein. SNO: unknown vein.
Results from in-mine exploration and infill drilling are reported for 59 holes (10,229 m) including: 3 holes (341 m) from station ES-NV40-A, 1 hole (103 m) from station ES230N, 3 holes (435 m) from station ES900N-A, 3 holes (600 m) from station ES710N-A, 8 holes (1,238 m) from station ES610N-A, 12 holes (918 m) from station ES615-A, 12 holes (2,682 m) from station ES810N-A, 13 holes (2,882 m) from station ES872-A, and 4 holes (1,030 m) from station ES872N-.B There are no results above cut-off grade for 35 holes and these holes are not listed in the table above.
Please refer also to the attached illustrative maps and section showing the El Silencio drilling programs.
Qualified Person
Dr.
Quality Assurance and Quality Control
The
About
Gran
Additional information on Gran Colombia can be found on its website at www.grancolombiagold.com and by reviewing its profile on SEDAR at www.sedar.com.
Cautionary Statement on Forward-Looking Information
This news release contains "forward-looking information", which may include, but is not limited to, statements with respect to anticipated business plans or strategies, including exploration programs and mineral resources and reserves. Often, but not always, forward-looking statements can be identified by the use of words such as "plans", "expects", "is expected", "budget", "scheduled", "estimates", "forecasts", "intends", "anticipates", or "believes" or variations (including negative variations) of such words and phrases, or state that certain actions, events or results "may", "could", "would", "might" or "will" be taken, occur or be achieved. Forward-looking statements involve known and unknown risks, uncertainties and other factors which may cause the actual results, performance or achievements of Gran Colombia to be materially different from any future results, performance or achievements expressed or implied by the forward-looking statements. Factors that could cause actual results to differ materially from those anticipated in these forward-looking statements are described under the caption "Risk Factors" in the Company's Annual Information Form dated as of
For Further Information, Contact:
Chief Financial Officer
(416) 360-4653
investorrelations@grancolombiagold.com
Attachment 1 –
https://www.globenewswire.com/NewsRoom/AttachmentNg/d60b06e3-0e1c-4085-8221-b1ccc5d8ae11
Attachment 2 –
https://www.globenewswire.com/NewsRoom/AttachmentNg/0bddabe3-5100-4aab-a756-514110441993
Attachment 3 – Cross section of the El Silencio vein system at northernmost end of the mine
https://www.globenewswire.com/NewsRoom/AttachmentNg/440c6e7a-98a5-41bb-bad2-d308d8fa93bf
Attachment 1
El Silencio mine – In-fill Drilling Grade Intercepts on Manto and 1180 veins
Attachment 2
El Silencio mine – In-fill Drilling Grade Intercepts on 1150 and 1040 veins
Attachment 3
Cross section of the El Silencio vein system at northernmost end of the mine
2021 GlobeNewswire, Inc., source