VANCOUVER, BC, April 19,
2022 /CNW/ - Libero
Copper & Gold Corporation (TSXV: LBC) (OTCQB: LBCMF)
(DE:29H) is pleased to announce the initial partial assay results
from the first diamond drill hole by Libero
Copper (MD-043) into the Mocoa porphyry copper deposit
located in Putumayo, Colombia.
Drill hole MD-043 has been completed to a depth of 1,235 metres and
significant assay results have been received and are reported here
to a down hole depth of 450 metres.
Highlights
- 443 meters of 0.74% CuEq1 (0.48% Cu and 0.078%
Mo) from 7 to 450 metres, including
- 342 metres of 0.91% CuEq1 (0.60% Cu and 0.093%
Mo) from 108 to 450 metres, including
- 251 metres of 1.13% CuEq1 (0.75% Cu and 0.114%
Mo) from 139 to 390 metres
- Drill hole MD-043 reached a depth of 1,235 metres with
assays pending for the remaining 785 metres of core
- Broad intercepts of copper and molybdenum mineralization
continues well beyond the 450 meters of assay results reported in
this news release
Composite assay intervals for copper and molybdenum to date for
hole MD-043 to a depth of 450 metres are presented in Table 1.
Interval
|
From
(m)
|
|
To
(m)
|
|
|
|
Interval
(m)
|
Cu
%
|
|
Mo
%
|
|
CuEq1
%
|
|
7.00
|
|
450.40
|
|
|
|
443.40
|
0.48
|
|
0.078
|
|
0.74
|
incl.
|
108.12
|
|
450.40
|
|
|
|
342.28
|
0.60
|
|
0.093
|
|
0.91
|
incl.
|
139.62
|
|
390.40
|
|
|
|
250.78
|
0.75
|
|
0.114
|
|
1.13
|
and
incl.
|
145.40
|
|
178.82
|
|
|
|
33.42
|
0.90
|
|
0.096
|
|
1.22
|
and
incl.
|
211.85
|
|
230.26
|
|
|
|
18.41
|
0.88
|
|
0.125
|
|
1.30
|
and
incl.
|
242.26
|
|
295.90
|
|
|
|
53.64
|
0.92
|
|
0.152
|
|
1.43
|
and, and
incl.
|
265.31
|
|
295.90
|
|
|
|
30.59
|
1.30
|
|
0.184
|
|
1.92
|
and
incl.
|
309.40
|
|
390.40
|
|
|
|
81.00
|
0.82
|
|
0.090
|
|
1.12
|
and, and
incl.
|
361.90
|
|
390.40
|
|
|
|
28.50
|
1.30
|
|
0.093
|
|
1.61
|
1
|
Libero Copper
defines copper equivalent calculation for reporting purposes only.
Copper-equivalence calculated as:
CuEq (%) = Cu (%) + 3.33 × Mo (%), utilizing metal prices of Cu -
US$3.00/lb, Mo - US$10.00/lb. No adjustments
were made for metal recovery.
|
Table 1: Composite assay intervals for drill
hole MD-043 to 450m.
"Hole MD-043 is starting to demonstrate the real potential of
the Mocoa porphyry copper and molybdenum deposit with assay results
returned to date confirming the exceptional grade, thickness and
strength of the mineralizing system present in the area. The
mineralized system remains open and many other porphyry targets
have been identified for systematic follow-up within Libero Copper's significant land position,"
comments Ian Harris, President &
CEO. "The Mocoa resource is already the largest copper resource in
Colombia and will play a key role
in the country's goals of becoming the third largest producer of
copper in South America, a metal
that is indispensable in the decarbonization of the world's
economy."
In drill hole MD-043, highly elevated copper - molybdenum
mineralization occurs below the leached cap starting at a depth of
108 metres. The majority of the lithologies intersected in the hole
consist of brecciated dacite porphyry which is overprinted by
multiple phases of alteration, veining and mineralization with the
original rock type typically unrecognizable due to hydrothermal
alteration related to the mineralizing system. Phyllic alteration
is typically overprinted by variable potassic alteration and is
accompanied with multiple generations of quartz veining. Copper in
the form of chalcopyrite, bornite and chalcocite and molybdenum in
the form of molybdenite typically occur with quartz veins and as
disseminations replacing variably altered rocks. Higher grade
mineralized intervals typically contain strong potassic alteration
overprinting highly obscured multi-phase quartz vein and silica
rich porphyry breccia. Similar brecciated porphyry and
alteration along with variable quartz-copper-molybdenite veining
and mineralization continue in the hole well below the sample
interval reported in this news release. Additional drilling
will continue to confirm and expand the mineralizing system and
confirm the geometry and nature of the mineralization remaining
within the leached cap.
Copper and molybdenum grades are illustrated as histograms on
the cross section illustrated in Figure 1, and Photos 1 and 2 are
presented as representations of mineralization intersected at 229
metres and 270 metres respectively. Figure 1 is a cross
section through hole MD-043 oriented 275 degrees looking north with
a projection influence of +/- 45 metres. Simplified
lithologies are plotted down the hole trace with copper and
molybdenum histograms plotted along the left and right side of the
hole trace respectively. An interpretation of the mineralized
copper-molybdenum zone is illustrated, and the projected pit shell
is illustrated as defined in the November 1,
2021 NI 43-101 Technical Report2. Table 2
contains select composite samples for the drill holes within the
cross section.
About the Mocoa Porphyry
Copper-Molybdenum Deposit
The Mocoa deposit is located in the department of Putumayo, 10
kilometres from the town of Mocoa and was discovered in 1973 when
the United Nations and the Colombian government conducted a
regional stream sediment geochemical survey. Between 1978 and
1983, an exploration program was carried out that consisted of
geological mapping, surface sampling, ground geophysics (IP,
magnetics), 31 diamond drill holes totaling 18,321 metres and
metallurgical test work cumulating in a positive pre-feasibility
study (the pre-feasibility study is historical in nature only and
should not be relied upon as it is not NI 43-101 compliant).
B2Gold subsequently executed diamond drill programs in 2008
and 2012.
A pit constrained inferred resource at Mocoa contains 636
million tonnes of 0.45% copper equivalent (0.33% Cu and 0.036%
Mo)1 generated using $3/lb
Cu and $10/lb Mo, containing 4.6
billion pounds of copper and 511 million pounds of molybdenum.
The Mocoa deposit appears to be open in both directions along
strike and at depth. Current work on the property has
identified additional porphyry targets including the possible
expansion of known mineralization which will receive additional
follow-up drilling in 2022.
The Mocoa deposit is situated in the Eastern Cordillera of
Colombia, a 30-kilometre-wide
tectonic belt
underlain by volcano-sedimentary, sedimentary and intrusive
rocks that range in age from Triassic-Jurassic to Quaternary and by
remnants of Paleozoic metasediments and metamorphic rocks of
Precambrian age. This belt hosts several other porphyry-copper
deposits in Ecuador, such as
Mirador (438 million tonnes measured and indicated at 0.61% Cu and
235 million tonnes inferred at 0.52% Cu)3, San Carlos (600 million tonnes inferred at
0.59% Cu)3, Panantza (463 million tonnes inferred at
0.66% Cu)4 and Solaris' Waritza, located in Ecuador.
Copper-molybdenum mineralization is associated with dacite
porphyry intrusions of the Middle Jurassic age that are emplaced
into andesitic and dacitic volcanics. The Mocoa porphyry system
exhibits a classical zonal pattern of hydrothermal alteration and
mineralization, with a deeper central core of potassic alteration
overlain by sericitization and surrounded by propylitization.
Mineralization consists of disseminated chalcopyrite, molybdenite
and local bornite and chalcocite associated with multiphase
veins, stockwork and hydrothermal breccias. The Mocoa deposit
is roughly cylindrical, with a 600 metre diameter. High-grade
copper-molybdenum mineralization continues to depths in excess of
1,000 metres.
_________________________
2
|
Technical Report "Mocoa
Copper-Molybdenum Project" dated effective November 1,
2021
|
3
|
Technical Report:
"Mirador Copper-Gold Project 30,000 TPD Feasibility Study" dated
effective April 3, 2008
|
4
|
Technical Report:
"Preliminary Assessment Report Panantza & San Carlos Copper
Project" dated effective October 30, 2007
|
Quality Assurance / Quality
Control on Sample Collection, Security and
Assaying
Libero Copper operates according
to a rigorous Quality Assurance and Quality Control (QA/QC)
protocol consistent with industry best practices. Primary sample
collection involves secure transport from Libero Copper's core logging facilities in
Mocoa, Colombia to the ActLabs
certified sample preparation facility in Medellin, Colombia. Samples are processed in
the Medellin facilities where they
are analyzed for copper and molybdenum by 4-Acid digest AA
analysis. The sample pulps are air freighted from Medellin to the ActLabs certified laboratory
in Guadalajara, Mexico, where they
are analyzed using 4-Acid digest ICP multi element analysis.
In order to monitor the ongoing quality of assay data and the
database, Libero Copper has
implemented QA/QC protocols which include standard sampling
methodologies, the insertion of certified standard materials,
blanks and field duplicates and ongoing monitoring of data entry,
QA/QC reporting and data validation. No material QA/QC issues have
been identified with respect to sample collection, security and
assaying.
Qualified Person
Information in this news release relating to the
exploration results is based on data reviewed by Matthew C. Wunder, B.Sc. P.Geo., the Vice
President Exploration for Libero
Copper. Mr. Wunder is a registered Professional Geologist
and has in excess of 35 years' experience in mineral exploration
and is a Qualified Person as defined under National Instrument
43-101.
About Libero Copper & Gold
Libero Copper is unlocking the
value of a collection of porphyry copper deposits throughout the
Americas in prolific and stable jurisdictions. The portfolio
includes the Mocoa deposit in Putumayo, Colombia; Esperanza in San
Juan, Argentina; and Big
Red and Big Bulk in the Golden Triangle, BC, Canada. These assets are being advanced by a
highly disciplined and seasoned professional team with successful
track records of discovery, resource development, and permitting in
the Americas.
Neither the TSX Venture Exchange nor its Regulation Services
Provider (as that term is defined in the policies of the TSX
Venture Exchange) accepts responsibility for the adequacy or
accuracy of this release. This news release includes
forward-looking statements that are subject to risks and
uncertainties. All statements within, other than statements
of historical fact, are to be considered forward looking. Although
the Company believes the expectations expressed in such
forward-looking statements are based on reasonable assumptions,
such statements are not guarantees of future performance and actual
results or developments may differ materially from those in
forward-looking statements. Factors that could cause actual results
to differ materially from those in forward-looking statements
include market prices, exploitation and exploration successes,
continued availability of capital and financing, and general
economic, market or business conditions and regulatory and
administrative approvals, processes and filing requirements. There
can be no assurances that such statements will prove accurate and,
therefore, readers are advised to rely on their own evaluation of
such uncertainties. We do not assume any obligation to update any
forward-looking statements.
SOURCE Libero Copper & Gold
Corporation.