Colibri & Partner Completes Inaugural Drill Program at Diamante Project, Sonora, Mexico
Colibri & Partner Completes Inaugural Drill
Program at Diamante Project, Sonora, Mexico
Dieppe, New Brunswick--(Newsfile Corp. - August 3, 2022) - Colibri Resource Corp. (TSXV: CBI)
("Colibri" or the "Company"), with its partner Silver Spruce Resources Inc. ("Silver Spruce"), are pleased
to announce that its Phase 1 drilling program at the Diamante Project has been completed.
Silver Spruce is in year two of a two-year agreement to earn up to 50% of the Diamante Project from
Colibri. For additional details of the earn in agreement between Colibri and Silver Spruce please see
Colibri's news release dated
April 29
th
, 2021
.
Program operations at Diamante during the earn-in period are jointly managed by Silver Spruce and
Colibri, however the QA/QC reporting of this drilling program will be the responsibility of Silver Spruce.
Silver Spruce Reports:
Silver Spruce and Colibri hit mineralization at Pillado and La Prieta Au-Ag-Pb-Zn-Cu targets in
19-hole, 2,005 metre drill program at Diamante project, Sonora, Mexico
August 3rd, 2022 - Bedford, NS -
(TSXV: SSE) - Silver Spruce Resources Inc. ("Silver Spruce" or the
"Company"), announces that their Hermosillo-based team of geologists and service contractors has
completed the first R/C drilling program on the Diamante project.
Nineteen (19) holes were drilled in its
2,005-metre program at the La Prieta (10) and Pillado (9) Au-Ag-Pb-Zn-Cu targets (Figure 1, Table 1).
The drill-ready Diamante gold-silver (Au-Ag) property ("Diamante" or the Property") is located 5 km
northwest of Tepoca, and 165 km southeast of the capital city of Hermosillo, eastern Sonora, Mexico.
"
We are pleased to complete successfully our maiden exploration drilling program on two highly
prospective areas of Diamante.
Our first two drill targets, Pillado and La Prieta, exhibited multiple
intersections of sulphide mineralization, locally with fault controls, comprising polymetallic vein-style
occurrences within and adjacent to historical artisanal mining
," stated Greg Davison, Silver Spruce
Vice-President Exploration and Director.
Figure 1. Reverse circulation drill rig collared on pad #40 north of artisanal underground workings at
the Pillado drill target, first DDH on the Diamante 1 concession.
To view an enhanced version of this graphic, please visit:
https://images.newsfilecorp.com/files/4269/132688_42e883d9b40ac9a3_001full.jpg
"
Geological logging reported one or more sulphide-bearing intersections per hole and pXRF
analyses conducted on-site during the drill program provided clearly anomalous values of base
metals, pathfinders and to a lesser degree, silver.
Mineralized sections occurred over individual 1.5
metre sampling intervals and, with anomalous geochemical haloes, over contiguous intervals up to
21 metres.
From one to seven discrete pXRF anomalies per hole, based on 90
th
and 95
th
percentiles
for Pb, Zn, As, Ba and Sr values, were indicated from both Pillado and La Prieta
," Mr. Davison added.
"
The initial batch of data from ALS Global ("ALS") is in hand and under review for the Pillado drilling.
We anticipate receipt and release of the remaining geochemical results from ALS shortly with
interpretation of the geological sections.
Comparison of the current ALS data with the pXRF analyses
identified a strong linear relationship for selected metals and pathfinders which can be applied both to
drilling optimization and sample selection protocols for the future Diamante drill programs.
"
Constructora Trax ("TRAX") and Minera Drilling, both from Hermosillo, Mexico, respectively, were
contracted for the preparation of access trails and pads, and reverse circulation drilling holes on the
principal drilling target areas of the Diamante 1 and 2 concessions, specifically on the first-priority
targets at Pillado and La Prieta (Figures 1, 2, 3, 4 and 5).
Priority targets at Calton, Aguaje, El Chon-El
Chon Oeste and Mezquite Raizudo are next in line for a Phase 2 work program with several other
promising targets awaiting additional ground truthing activities.
Figure 2. Orthophoto of Pillado target on Diamante 1 showing pads #40, 41 and 45 with projections for
nine drill holes. Adit located on north-facing exposure south of pad #40. Northerly and E-W-trending
faults parallel targets exhibiting Au-Ag-Cu-Pb-Zn mineralization with intense alteration. Anomalous
multi-element geochemical values shown in graduated symbols. 1:1,000 scale.
To view an enhanced version of this graphic, please visit:
https://images.newsfilecorp.com/files/4269/132688_42e883d9b40ac9a3_002full.jpg
TRAX conducted activities in early June on the Pillado and La Prieta targets, under the direction of our
exploration point team, to prepare access and drill pads.
Minera Drilling mobilized from Hermosillo to
site on June 15
th
and collared June 16
th
with the program finished in four weeks through July 12
th
.
The
initial four holes at Pillado targeted E-W trending, shallow-dipping mineralization.
Five additional holes
were proposed at Pillado to test western extensions and southerly south-dipping targets.
Ten holes were
completed at La Prieta, all of which are oriented to intersect depth projections of known surface and
shallow underground holes were inclined between -45˚ and -75˚ and drilled to depths ranging from 70
metres to 135 metres.
Table 1. Summary of 2022 Drilling Program at Diamante Project
To view an enhanced version of this graphic, please visit:
https://images.newsfilecorp.com/files/4269/132688_colibri.jpg
Figure 3. Orthophoto of La Prieta showing pads #7 and 8 and revised pad #5 west of the proposed
site, with projections for ten drill holes. Adit located on north-facing exposure south of pad #40. NE-
trending targets exhibit Au-Ag-Cu-Pb-Zn mineralization with intense alteration. Anomalous multi-
element geochemical values shown in graduated symbols. 1:1,000 scale.
To view an enhanced version of this graphic, please visit:
https://images.newsfilecorp.com/files/4269/132688_42e883d9b40ac9a3_004full.jpg
Samples were screened using pXRF analyses during the on-site logging to provide rapid qualitative
data for dynamic decision-making on drill hole planning and depth targeting (Figure 5).
Four sample
shipments comprising a total of 1,586 samples, including QA/QC insertions, to ALS Global in Hermosillo
were delivered on a weekly basis (Table 1).
The quantitative drill sample results will be reported in due
course.
Figure 4. Minera Drilling rig underway on DDH#22-10 to the northwest above portal to workings at the
La Prieta drill target.
To view an enhanced version of this graphic, please visit:
https://images.newsfilecorp.com/files/4269/132688_42e883d9b40ac9a3_005full.jpg
Project Geology
The Property is located within the west-central portion of the Sierra Madre Occidental Volcanic Complex
within the northwest-trending "Sonora Gold Belt" of northern Mexico.
Diamante offers strong precious
metal tenor with a polymetallic endowment, multiple quality targets, styles of mineralization, of particular
significance for our exploration moving forward, no records of drilling.
Historical exploration and artisanal
activities are indicated by surface trenches and subsurface workings parallel to and cutting the vein
mineralization were measured up to 100 metres in length, with the latter showing shafts and short lateral
drifts.
Geological features of epithermal Au, low to intermediate sulphidation Ag-Au (Pb-Zn), high sulphidation
Au-Cu, and potential porphyry style Au-Cu occur as disseminated, stockwork and vein styles.
Most drill
targets are polymetallic vein style with precious metal-dominant targets also identified at Calton, El Chon
and Aguaje.
Metal zoning or pulses of mineralization may be indicated at each of these three locations.
Silicification with sericitic, argillic and propylitic alteration were accompanied by drusy to vuggy quartz,
black tourmaline, multiple disseminated to vein sulphides with incipient to pervasive oxidation to
carbonates, sulphates such as jarosite, hematite and iron hydroxide.
Our recent geological mapping programs conducted over multiple targets reported Au values to 51.5 g/t
from silicified breccias in the Calton target (see Press Release of April 27, 2022), the highest Au grade
yet reported from Diamante, and Ag values >1,000 g/t were recorded from base metal sulphide-bearing
veins at Pillado, El Chon and El Cumbro accompanied by high-grade primary and supergene Pb+Zn+Cu
up to a combined grade of 50.9 wt.% from grab and channel sampling at surface and within historical
trenches and artisanal workings.
Importantly, despite the number and quality of known mineralization
targets, there is no recorded historical drilling on Diamante to date.
Figure 5. Company geologists utilizing portable X-ray fluorescence (pXRF) analyses on R/C drill chip
samples to guide daily drilling activities, hole depth, fan design and undercutting areas of visual
mineralization and those indicated by Cu, Pb, Zn, Ag and other pathfinder element data.
To view an enhanced version of this graphic, please visit:
https://images.newsfilecorp.com/files/4269/132688_42e883d9b40ac9a3_006full.jpg
Specifically, geochemical results from surface and underground sampling of eight target areas reported
precious metals (Au to 51.5 g/t, Ag to 2,270 g/t), base metals (Pb to 42.3 wt.%, Zn to 22.9 wt.% and Cu
to 3.2 wt.%) and pathfinders each exhibited weak to highly anomalous values commonly with high Ag;Au
and low to high Pb:Zn.
Elevated Cu, Cd, Sb, Hg, As and Bi are linked commonly to Pb and/or Zn.
The
current assays are consistent with historical surface and U/G channel samples reported up to 39.8 g/t
Au, 3,460 g/t Ag, 18.2% Pb, 33.5% Zn and 1.47% Cu (see Press Releases of April 12, 2021, and
January 24, 2022).
Mineralization is reported visually as pyrite, arsenopyrite, chalcopyrite, sphalerite, argentiferous galena,
argentite, hematite and probable metal oxides, carbonates and sulphates, including copper carbonate
(malachite), copper sulphates and plumbojarosite.
Structural lineaments show intersecting and splaying vein patterns with steep to moderately dipping
northwest, northeast and north-striking orientations were confirmed and spatially coincident with parallel
to oblique faults and shears which control and locally offset the mineralization.
Project Background
Silver Spruce can acquire up to 50% interest in four Diamante concessions with a cumulative land
position of 1,057 hectares (see Press Release of April 29, 2021).
The Property is well situated in terms of logistics for exploration and is easily accessible from Mexican
Highway #16 which transects Diamante 1 and along several trails and dry river beds southward to
Diamante 2.
Mining and exploration in the surrounding area is very active with adjacent and nearby properties held by
Alamos Gold, Argonaut, Agnico Eagle, Evrim, Newmont, Garibaldi, Kootenay Silver and Penoles among
others.
Geochemical Analysis, Quality Assurance and Quality Control
Drilling samples (¼ splits) were delivered by the Project Geologist from the Property to the ALS sample
preparation facility in Hermosillo, Sonora, Mexico.
The remaining ¼ and ½ splits were transported to
Colibri's storage facilities in Suaqui Grande, south of Tecoripa, Sonora.
ALS Global in North Vancouver, British Columbia, Canada, is a facility certified as ISO 9001:2008 and
accredited to ISO/IEC 17025:2005 from the Standards Council of Canada.
Local chain of custody was
monitored and maintained by the Project Geologist under the direction of the QP.
The samples were crushed to 70% passing 2mm (PREP-31) and a split of up to 250 grams pulverized
to 85% passing 75 micrometres (-200 mesh).
The sample pulps and crushed splits were transferred
internally to ALS Global's North Vancouver, Canada or Lima, Peru analytical facility for gold and multi-
element analysis.
Pulps (50gram split) were submitted for Au analysis by Fire Assay with Atomic Absorption finish (Au-
AA24).
The retained pulps also were analysed by Four Acid Digestion followed by Inductively Coupled
Plasma Atomic Emission Spectrometry (ICP-AES) multi-element analyses (ME-ICP61m) with Hg by
Aqua Regia and ICP-MS (Hg-MS42).
Over-limit Au and Ag samples were analyzed by Fire Assay with Gravimetric Finish Ore Grade (Au-
GRA21 or Au-GRA22, Ag-GRA21).
Overlimit base metals are analyzed by Four Acid Digestion followed
by Ore Grade Inductively Coupled Plasma Atomic Emission Spectrometry (ICP-AES) for Cu, Pb and Zn
(Cu-OG62, Pb-OG62, Zn-OG62).
High grade samples above the range of the Ore Grade OG62 analysis
are digested, as above, and analyzed using Titration (e.g., Pb-Vol70).
In-house quality control samples were inserted into the sample set by the Project Geologist.
ALS Global
conducts its own internal QA/QC program of blanks, standards and duplicates, and the results are
provided with the Company sample certificates.
The results of the internal and ALS control samples will
be reviewed by the Company's QP and evaluated for acceptable tolerances prior to disclosure.
All sample and pulp rejects will be stored at ALS Global pending full review of the analytical data, and
future selection of pulps for independent third-party check analyses, as requisite.
All metal values disclosed herein by Silver Spruce are reported from grab and channel samples which
may not be representative of the metal grades.
The Company's Qualified Person believes that the sampling documentation, analytical protocols and
quantitative data will withstand scrutiny for inclusion.
Qualified Person
Greg Davison, PGeo, Silver Spruce VP Exploration and Director, is the Qualified Person for the
Diamante Project and is responsible for approval of the technical content of this press release within the
meaning of National Instrument 43-101 Standards of Disclosure for Mineral Projects ("NI 43-101"), under
TSX guidelines.
ABOUT COLIBRI RESOURCE CORPORATION:
Colibri is a Canadian-based mineral exploration company listed on the TSXV (CBI) and is focused on
acquiring and exploring prospective gold & silver properties in Mexico. The Company has six exploration
projects of which five currently have exploration programs being executed in 2022. (1) The flagship
Evelyn Gold Project
is 100% owned and explored by Colibri, (2) the
Pilar Gold & Silver Project
(optioned to
Tocvan Ventures
- (CSE: TOC), (3) the
El Mezquite Gold & Silver Project
, (4) the
Jackie
Gold & Silver Project, and (5) the Diamante Gold & Silver Project.
3,4, and 5 are subject to 50% earn-
in agreements by
Silver Spruce Resources
- (TSXV: SSE).
For more information about all Company projects please visit:
www.colibriresource.com
.
Neither 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.
Notice Regarding Forward-Looking Statements:
This news release contains "forward-looking statements". Statements in this press release which are not
purely historical are forward-looking statements and include any statements regarding beliefs, plans,
expectations or intentions regarding the future. Actual results could differ from those projected in any
forward-looking statements due to numerous factors. These forward-looking statements are made as of
the date of this news release, and the Company assumes no obligation to update the forward-looking
statements, or to update the reasons why actual results could differ from those projected in the forward-
looking statements. Although the Company believes that the plans, expectations and intentions
contained in this press release are reasonable, there can be no assurance that they will prove to be
accurate.
For information contact: Ronald J. Goguen, President, Chairperson and Director, Tel: (506) 383-4274,
.
To view the source version of this press release, please visit
https://www.newsfilecorp.com/release/132688