Gran Colombia Gold Corp. (TSX: GCM, OTCQX: TPRFF) announced today
high-grade intercepts from the latest 71 diamond drill holes,
totaling 10,634 meters, from the 2020 in-mine and near-mine
drilling programs at its Segovia Operations. The Company also
announced the assay results from five additional kick-off diamond
drill holes (2,208 meters) from the ongoing directional drilling
program at the El Silencio Deep Zone, which led to the discovery of
a new high-grade vein named the 450 Vein located in the
hanging-wall of the Nacional Vein.
Significant high-grade intercepts from the
latest drill results include:
- Providencia: 51.22 g/t Au and 1.9
g/t Ag over 1.91 meters on the Providencia Vein (PV-IU-276);
- Sandra K: 63.92 g/t Au and 458.4
g/t Ag over 0.63 meters on the Sandra K Techo Vein
(SK-IU-158);
- El Silencio: 162.70 g/t Au and 77.0
g/t Ag over 0.51 meters on the 450 Vein (ES-MH07-05);
- El Silencio: 87.40 g/t Au and 13.4
g/t Ag over 0.56 meters on the Manto Vein (ES-MH07-04); and,
- Carla: 100.30 g/t Au and 59.3 g/t
Ag over 1.26 meters on the Gran Colombia Vein-HW1 (CA-ES-019).
Serafino Iacono, Executive Chairman of Gran
Colombia, commented, “Our Segovia Operations were recently
acknowledged again as one of the top five highest-grade underground
gold operations globally. Our 2020 drilling program in Segovia is
continuing to provide us with outstanding results, providing
further confirmation that the Segovia Operations are a world-class
gold system. With the discovery of a third high-grade vein at depth
in the El Silencio Mine, we remain confident that we will be able
to expand mineral resources and add to the mine life for this
operation. At Providencia, drilling has led to the discovery of a
new orebody at Level 14 which is now being developed and remains
open at depth. Drilling at the northernmost end of the Sandra K
mine showed that the mineralization is still open along strike and
at depth. At Carla, our fourth mine which recently started
production, drilling intercepted additional high-grade
mineralization well below the existing underground mine
development. These new discoveries continue to confirm that our
mines currently in production remain under-explored and have the
potential to be larger than what we understand today. In addition,
we commenced our regional drilling campaign in October focused on
the other 24 known veins we are not currently mining. 2021 is
shaping up as an exciting year for our ongoing exploration programs
at our Segovia Operations."
The planned 2020 in-mine and near-mine infill
drilling campaigns commenced in early January with six diamond
drill rigs operating from purpose-built underground and surface
drill stations and comprises a total of 159 drill holes totaling
approximately 31,400 meters, or about 70% of the total drilling
program for this year. The execution of the planned drilling
programs was somewhat hampered by the restrictions resulting from
the COVID-19 pandemic that resulted in logistical difficulties and
schedule disruptions earlier in the year. However, approximately
80% of the total in-mine and near-mine infill drilling program for
2020 was completed by the end of October and the remaining 20%,
distributed amongst the three main mines, will be completed by
early 2021.
The other 30% of the planned drilling campaign
for 2020 is focused on the regional exploration targets
encompassing the 24 veins within the Segovia mining title that are
not currently in production. As a result of COVID-19 limitations to
access these areas, this portion of the program only commenced
in-mid October and the Company expects to complete approximately
15% of its original plan for these targets in 2020. The regional
program will continue in 2021.
Key Highlights
Providencia
In-mine infill drilling from underground
stations PV6005-A and PV6005-B, located at the westernmost end of
Level 11, with station PV6005-A installed off the same level, was
completed to test the extension of the Providencia Vein to the
west, up to the F Fault, and in the downthrown block. Multiple high
gold grades were intersected from 24 drill holes (2,471 meters) on
the main vein system with maximum intersection grades of
111.12 g/t Au with 54.5 g/t Ag over 0.87 meters on
the Providencia Vein (PV-IU-276). Drill hole PV-IU-274, drilled
from station PV6005-A, intersected 10.30 g/t Au and 7.7 g/t Ag over
0.77 m at depth on the Providencia Vein, which guided the
development of Level 14 to the west to intersect a new orebody with
42 meters horizontal width at an average grade of 25.0 g/t Au. The
high grade intercept in drill hole PV-IU-276 is below Level 14, so
the orebody remains open at depth and offers the potential for
additional mineral resource growth and extension of the mine life.
As a result, Gran Colombia will carry out in-fill drilling in 2021
from purpose-built drill stations to test the extension of this
high grade zone down-plunge and in the downthrown block.
Sandra K
In-mine infill drilling from underground station
SK5675, located at the northernmost end of Level 3, recently
completed, has continued to delineate and further extend
down-plunge, to approximately future Level 7, one of the main
ore-shoots outlined by mining in the upper levels of the existing
operation, which is currently taking place primarily in Level 5.
This orebody remains open. Multiple high gold grades were
intersected from 13 drill holes (1,759 meters) on the main vein
system with maximum intersection grades of 63.92 g/t Au
with 458.4 g/t Ag over 0.63 meters on the Sandra K Techo
Vein (SK-IU-158). As a result, Gran Colombia will carry out
additional step-out and in-fill drilling at Sandra K in 2021, to
test the extension of the main vein system to the north and the
extension of the main ore-shoots further down plunge.
El Silencio
In-fill exploration drilling from underground
station ES5880, installed off Level 38, was completed on the main
vein system that comprises three principal structures, namely: the
Manto Vein, which is the master structure that dips shallowly to
the east; the 1140 Vein that occurs in hanging wall of the Manto
Vein, some 80 meters vertically above it, interpreted as a low
angle vein or manto; and a tensional structure delimited by the two
veins previously mentioned. Multiple high gold grades were
intersected from 14 drill holes (1,799 meters) on the main vein
system with maximum intersection grades of 78.48 g/t Au
with 65.1 g/t Ag over 0.80 meters on the Manto Vein
(ES-EU-009) and 9.28 g/t Au with 8.2 g/t Ag over 0.31
meters on the Tensional structure (ES-EU-009). High-grade
mineralization associated with the Manto Vein remains open
down-plunge and will be targeted by in-fill drilling in 2021.
The ongoing directional drilling program on the
El Silencio Deep Zone is targeted to better delineate the southern
ore-shoots down-plunge below Level 40. Drilling on the southern
ore-shoot was successful in discovering a new high-grade vein named
the 450 Vein and confirming the continuity and high-grade nature of
the Manto vein down-dip below Level 40, the deepest level of
historical mining on the Manto Vein by Frontino Gold Mines. The 450
Vein, interpreted as a low angle vein or manto, occurs in the
hanging-wall of the Nacional Vein, some 40 meters vertically above.
Multiple high gold grades were intersected from 5 kick-off holes
(2,208 meters) with maximum intersection grades of 162.70
g/t Au with 77.0 g/t Ag over 0.51 meters on the 450 Vein
(ES-MH07-05) and 87.40 g/t Au with 13.4 g/t Ag over 0.56
meters on the Manto Vein (ES-MH07-04).
There is still about 3,000 m to be drilled to
complete the planned directional drilling program, which is
scheduled to be completed in the first quarter of 2021.
Carla
Four diamond drill holes were completed at Carla
from two purpose-built surface drill stations to finish the
drilling program targeting the central and southern portions of the
Gran Colombia Vein system, with the objective of converting
Inferred mineral resources to the Indicated mineral resource
category to be able to provide future mining studies with
reasonable levels of confidence. The Gran Colombia Vein system
interpreted so far comprises: the Gran Colombia Vein (“LGC”), which
is a northerly-trending master vein with a continuous strike of
more than 700 meters and has been drilled to a vertical depth of
about 250 meters, on which a small-scale underground mining
operation was developed in the past; an hanging-wall vein
(“LGC-HW1”) that strikes and dips sub-parallel and in close
proximity to the LGC, which merges into the LGC or dies out at
depth; and a possible third high-grade, narrow new structure logged
as a breccia (“LGC-FW1”), occurring in the footwall of the LGC,
interpreted as a splay-off the LGC gently dipping to the north.
Multiple high gold grades were intersected from
4 drill holes (904 meters) with maximum intersection grades of
11.82 g/t Au with 10.3 g/t Ag over 0.66 meters on
the LGC Vein (CA-ES-019), 149.08 g/t Au with 88.8 g/t Ag
over 0.84 meters on the LGC-HW1 (CA-ES-019) and
24.99 g/t Au with 11.2 g/t Ag over 1.32 meters on
the LGC-FW1 (CA-ES-018). Importantly, these intercepts have
significantly higher gold grades than the current Indicated and
Inferred mineral resource estimates for the Carla Mine. As a
result, Gran Colombia will carry out additional step-out and
in-fill drilling at Carla in 2021 in order to test the high-grade
structures of the main vein system along strike and at depth.
The table below lists the key intercepts from
the ongoing 2020 drilling campaign since the press release issued
on July 20, 2020:
Hole |
From (m) |
To (m) |
Width (m) |
Au (g/t) |
Ag (g/t) |
Vein |
PROVIDENCIA MINE |
U-G Drilling station PV5880 |
PV-IU-274* |
106.98 |
109.28 |
2.30 |
6.59 |
5.2 |
PRO |
including |
107.70 |
108.47 |
0.77 |
10.30 |
7.7 |
PRO |
PV-IU-276* |
133.56 |
135.47 |
1.91 |
51.22 |
1.9 |
PRO |
including |
134.60 |
135.47 |
0.87 |
112.12 |
54.5 |
PRO |
U-G Drilling station PV6005 |
PV-IU-283* |
96.63 |
98.50 |
1.87 |
7.55 |
25.9 |
PRO |
Including |
97.77 |
98.50 |
0.73 |
10.41 |
16.5 |
PRO |
PV-IU-285* |
85.10 |
85.58 |
0.48 |
19.06 |
13.0 |
PRO |
SANDRA K MINE |
U-G Drilling station SK5675 |
SK-IU-154* |
88.10 |
90.20 |
2.10 |
25.98 |
48.9 |
SKT |
including |
88.10 |
88.86 |
0.76 |
61.47 |
87.4 |
SKT |
SK-IU-158* |
115.34 |
115.97 |
0.63 |
63.92 |
458.4 |
SKT |
SK-IU-160* |
151.78 |
153.43 |
1.65 |
3.36 |
29.6 |
SKT |
including |
153.10 |
153.43 |
0.33 |
7.53 |
59.4 |
SKT |
SK-IU-163* |
60.18 |
60.55 |
0.37 |
10.56 |
208.4 |
SKT-HW1 |
EL SILENCIO MINE |
U-G Drilling station ES5980 |
ES-EU-005* |
35.26 |
35.60 |
0.34 |
8.20 |
4.7 |
Tensional |
ES-EU-009* |
33.02 |
33.33 |
0.31 |
9.28 |
8.2 |
Tensional |
ES-EU-009* |
94.64 |
95.44 |
0.80 |
78.48 |
65.1 |
VEM |
ES-EU-010* |
106.48 |
106.80 |
0.32 |
27.79 |
24.9 |
VEM |
El SILENCIO DEEP - DIRECTIONAL DRILLING |
U-G Drilling station ES5690 |
ES-MH07-01** |
934.95 |
935.49 |
0.54 |
9.52 |
6.5 |
450 |
ES-MH07-03** |
858.00 |
858.87 |
0.87 |
25.82 |
16.6 |
450 |
ES-MH07-04** |
934.38 |
935.44 |
1.06 |
93.90 |
67.0 |
450 |
ES-MH07-04** |
1060.69 |
1061.97 |
1.28 |
44.37 |
9.9 |
VEM |
including |
1060.69 |
1061.25 |
0.56 |
87.40 |
13.4 |
VEM |
ES-MH07-05** |
883.30 |
883.81 |
0.51 |
162.70 |
77.0 |
450 |
CARLA MINE |
Surface Drilling station CA4850 |
CA-ES-018 |
290.88 |
292.20 |
1.32 |
24.99 |
11.2 |
LGC-FW1 |
Surface Drilling station CA4840 |
CA-ES-019 |
155.39 |
156.65 |
1.26 |
100.30 |
59.3 |
LGC-HW1 |
including |
155.39 |
156.23 |
0.84 |
149.08 |
88.8 |
LGC-HW1 |
CA-ES-019 |
159.80 |
162.90 |
3.10 |
3.05 |
3.1 |
LGC |
including |
160.92 |
161.58 |
0.66 |
11.82 |
10.3 |
LGC |
* Denotes underground drill holes. The
underground infill holes were drilled at 0 to -86 degrees from the
horizontal. Sample interval grades over 7.0 g/t Au are reported.
Grades are for quartz vein intersections and are length-weighted
composites. The width is the sample length and is not necessarily
the true width of the vein. All gold and silver grades are uncut
and are not diluted to a minimum mining width.
** Denotes directional drilling mother and
kick-off holes. The directional drilling kick-off holes were
drilled at -42 to -49 degrees from the horizontal. Sample interval
grades over 7.0 g/t Au are reported.
Results from in-mine infill drilling are
reported for 63 holes (7,523 m) including 24 holes (2,471 m) at
Providencia (PV-IU-262 to PV-IU-285), 13 holes (1,759 m) at Sandra
K (SK-IU-152 to SK-IU-163) and 26 holes (3,293 m) at El Silencio
(ES-EU-001 to ES-EU-014 and ES-IU-118 to ES-IU-129). There are no
results above cut-off grade for the 20 holes at Providencia, 9
holes at Sandra K and 22 holes at El Silencio and so these holes
are not listed in the table.
Results from near-mine surface exploration
drilling at Carla are reported for 4 holes (903.50 m) (CA-ES-018
and CA-ES-021). There are no results above cut-off grade for 2
holes at Carla.
Results from directional drilling from one
purpose-built station at El Silencio are reported from 5 kick-off
holes (ES-MH07-01 to ES-MH07-05), totaling 2,208 m (kick-off hole
ES-MH07-01 is not included because it was already reported in the
press release issued on July 20, 2020, except for the intersection
of the new 450 vein, the significance of which was shown later by
the continuity of the 450 vein in the other kick-off holes), all
drilled on the southern ore-shoot. There are no results above
cut-off grade for one kick-off hole.
Please refer also to the attached illustrative
maps showing the Providencia, Sandra K, El Silencio and Carla
drilling programs.
Vein name abbreviations: PRO: Providencia Vein.
SKT: Sandra K Techo Vein. SKT-HW1: Sandra K Techo Hanging-wall 1.
450: 450 Vein. VEM: Manto Vein. LGC La Gran Colombia Vein. LGC-HW1:
La Gran Colombia Hanging-wall 1. LGC-FW1: La Gran Colombia Footwall
1.
Gran Colombia currently has six diamond drill
rigs in operation at Segovia, with three rigs carrying out resource
definition within the underground developments of the Sandra K and
El Silencio mines, one rig operating from Level 3 at Sandra K
targeting the down-plunge extension of the south ore-shoot of the
El Silencio mine, one rig operating from surface exploring at depth
the westernmost end of the Providencia mine, and one rig operating
from surface at Vera targeting the down-plunge extension of two
ore-shoots mined in the past by Frontino Gold Mines.
Qualified Person
Dr. Stewart D. Redwood, PhD, FIMMM, FGS, Senior
Consulting Geologist to the Company, is a qualified person as
defined by National Instrument 43-101 – Standards of Disclosure or
Mineral Projects and prepared or reviewed the preparation of the
scientific and technical information in this press release.
Verification included a review of the quality assurance and quality
control samples, and review of the applicable assay databases and
assay certificates.
Quality Assurance and Quality
Control
The Segovia samples were prepared by SGS
Laboratories Ltd (ISO 9001:2008) at their laboratory in Medellin,
and assayed at their laboratories in Segovia, Colombia and El
Callao, Peru. Gold was assayed by 30 g fire assay with atomic
absorption spectrophotometer (“AAS”) finish. Samples above the
upper detection limit of 10.0 g/t gold were re-assayed by 30 g fire
assay with gravimetric finish. Silver was assayed by aqua regia
digestion and AAS finish. Silver samples above 500 g/t were
re-assayed by nitric and hydrochloric acid digestion with AAS
finish for ore grades. Some sample batches were prepared and
assayed by ALS Colombia Ltda. (ISO 9001:2015) at its laboratory in
Medellin, Colombia. Gold was assayed by 30 g fire assay with AAS
finish. Samples above the upper detection limit of 10.0 g/t gold
were re-assayed by 30 g fire assay with gravimetric finish. Silver
was assayed by aqua regia digestion and AAS finish. Silver samples
above 100 g/t were re-assayed by nitric and hydrochloric acid
digestion with AAS finish for ore grades. Blank, standard and
duplicate samples were routinely inserted and monitored for quality
assurance and quality control.
About Gran Colombia Gold
Corp.
Gran Colombia is a Canadian-based mid-tier gold
producer with its primary focus in Colombia where it is currently
the largest underground gold and silver producer with several mines
in operation at its high-grade Segovia Operations. Gran Colombia
owns approximately 53.5% of Caldas Gold Corp. (TSX-V: CGC; OTCQX:
ALLXF), a Canadian mining company currently advancing a major
expansion and modernization of its underground mining operations at
its Marmato Project in Colombia. Gran Colombia’s project pipeline
includes its Zancudo Project in Colombia, currently in the process
of being spun out to ESV Resources Ltd. (TSX-V: ESV.H) together
with an approximately 18% equity interest in Gold X Mining Corp.
(TSXV: GLDX) (Guyana – Toroparu) and an approximately 26% equity
interest in Western Atlas Resources Inc. (“Western Atlas”) (TSX-V:
WA) (Nunavut – Meadowbank).
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 March 30, 2020 which
is available for view on SEDAR at www.sedar.com. Forward-looking
statements contained herein are made as of the date of this press
release and Gran Colombia disclaims, other than as required by law,
any obligation to update any forward-looking statements whether as
a result of new information, results, future events, circumstances,
or if management's estimates or opinions should change, or
otherwise. There can be no assurance that forward-looking
statements will prove to be accurate, as actual results and future
events could differ materially from those anticipated in such
statements. Accordingly, the reader is cautioned not to place undue
reliance on forward-looking statements.
For Further Information,
Contact:Mike DaviesChief Financial Officer(416)
360-4653investorrelations@grancolombiagold.com
Attachment 1 – Providencia Mine In-fill
Drilling Grade Intercepts is available at
https://www.globenewswire.com/NewsRoom/AttachmentNg/5b39f920-a8c1-430c-a921-8375cf9fb241
Attachment 2 – Cross section showing
high grade intercept at intersection of the Providencia Vein with
the F Fault is available at
https://www.globenewswire.com/NewsRoom/AttachmentNg/8bd815c0-70b3-4a88-9a3e-663bcde75ce3
Attachment 3 – Sandra K Mine In-fill
Drilling Grade Intercepts is available at
https://www.globenewswire.com/NewsRoom/AttachmentNg/a73b4df7-5b30-4c43-8ef6-d24972e6305f
Attachment 4 – Cross section of the
Sandra K vein system at northernmost end of the
mine is available at
https://www.globenewswire.com/NewsRoom/AttachmentNg/f13be5ad-3035-4f5e-82a0-c8aa31149c1b
Attachment 5 – El Silencio Mine In-fill
Drilling Grade Intercepts is available at
https://www.globenewswire.com/NewsRoom/AttachmentNg/7fa229e7-2319-429f-9620-3ea3fc14134f
Attachment 6 – Cross section of the El
Silencio vein system is available at
https://www.globenewswire.com/NewsRoom/AttachmentNg/d641bc91-08c8-43fb-a2ab-053aee3c2dc8
Attachment 7 – Cross section of the El
Silencio Deep vein system is available at
https://www.globenewswire.com/NewsRoom/AttachmentNg/59d9ed99-5a51-4e58-a48f-27e504fcf24e
Attachment 8 – Carla Mine In-fill
Drilling Grade Intercepts is available at
https://www.globenewswire.com/NewsRoom/AttachmentNg/030ba127-5923-4715-b245-62038c1b01c9
Attachment 9 – Cross section of the
Carla vein system is available at
https://www.globenewswire.com/NewsRoom/AttachmentNg/1a3c909f-50f4-4689-a888-2dca72bb5658
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