Outcrop Updates 3D Geologic and Grade Models and Discusses the Historic Frias Mine as Analogue for Shoots at Santa Ana
Outcrop Updates 3D Geologic and Grade
Models and Discusses the Historic Frias Mine
as Analogue for Shoots at Santa Ana
VANCOUVER, BC
,
Nov. 15, 2021
/CNW/ -
Outcrop Silver & Gold Corporation
(TSXV: OCG)
(OTCQX: OCGSF) (DE: MRG1) ("
Outcrop
") is pleased to announce refinements to the 3D geologic
and grade models which have improved grade continuity in locally expanded shoots and identified
important vein splays at the Santa Ana project located in Tolima,
Colombia
. The previous recognition
and modelling of continuous vein splays enabled Outcrop to successfully determine that La Ivana
represented an upper and lower shoot for two shoots of comparable size. Outcrop has also staked
key claims that either cover extensions of known veins or infill open parcels within the project.
Highlights
Ongoing 3D geologic modelling supports grade-shoot continuity and suggests potential
vein splays or parallel veins that could support additional shoots that are offset from
nearby drilled shoots.
Over the last eighteen months 8,000 hectares of new claims were added to the land
package, representing a 29% increase of Outcrop's footprint in the prolific Mariquita
district. Outcrop's Santa Ana Project now comprises 36,255 hectares.
The 100% owned Frias Mine on the Santa Ana project provides a possible model
analogue for the seven shoots discovered by Outcrop to date. The Frias Mine produced
7.8 million ounces of silver at a recovered grade of 1.3 kg Ag/t within a shoot 240 metres
wide and 440 metres long, with vein widths between 0.25 and 6 metres. The Frias Mine is
twelve kilometres south of Outcrop's current drilling location in the Royal Santa Ana
mine area.
Joseph Hebert
, Chief Executive Officer comments, "The Frias Mine's recorded production and
grades, vein widths, and detailed mine cross-section provides important insight into the potential
silver endowment of the seven shoots discovered to date by Outcrop in the Royal Santa Ana mine
area. In the first half of 2022, Outcrop plans to drill test three veins that comprise the Frias vein
corridor. The twelve-kilometre vein corridor between the Royal Santa Ana mines and Frias, both with
significant historic production, provides exceptional exploration potential."
"Recent refinements in geological modeling and a better understanding of the geologic controls in
Santa Ana continue to help us to extend and define our potential resource areas," commented
Jesus
Velador
, Vice President of Exploration. "With the expansion of our land position to further consolidate
the Mariquita district, we are excited to continue to uncover more high-quality exploration targets."
Updated Geologic Modelling
Ongoing 3D geologic modeling of vein shoots continues to provide a better understanding of shoot
geometries, related vein splays and offset parallel veins that may indicate higher shoot density than
currently recognized in the Royal Santa Ana mine area. Understanding shoot plunge is important for
both successfully and efficiently targeting higher grades and shoot extensions. Outcrop now
appreciates that it is the shoot plunge and not the dip of the hosting vein that is of most importance
for drilling vein extensions. It is now clear that there is a preferred directional long axis (commonly
known as rake or plunge) to the shoots within the plane of the vein. A proven example is at
Megapozo which has a length of 480 metres because its long axis is at an angle to the dip of the
vein drilled at 300 metres. It is critical knowledge to offset drill in the direction of a shoot's plunge
and not merely down the dip of the hosting vein.
Recent modelling is also bringing clarity to the occurrence of shoot parallel hanging-wall and foot-
wall veins that could produce additional discrete shoots. An example is La Ivana, where definition
drilling resolved two parallel shoots separated by approximately 30 metres, instead of the single
shoot interpreted previously.
For a full list of drill results to date,
click here
.
Figure 1. 3D view of modelled vein shoots. The model shows that high-grade mineralization occurs in
well-defined contours as central cores of the shoots. The shoots are open in one or two directions
laterally and all are open at depth. (CNW Group/Outcrop Silver & Gold Corporation)
Frias Mine
The Frias Mine (Figure 2) represents a possible model analogue for the seven shoots discovered to
date by Outcrop. At Frias it appears from mine cross-sections and recorded data that a continuous
shoot was mined that is very similar to some of the better-defined Outcrop shoots.
Shoot and level maps for Frias show a mined dimension of approximately 240 metres along the
surface and 310 metres down dip, and an apparent rake observable from the distribution of stopes
that provides a long axis of 460 metres. The vein widths are reported to range from less than 0.25
metres up to 6 metres.
During the later period from 1891 to 1900, it is reported (
Arthur Russel
, 1910) that 7.8 million
ounces of silver were produced at a recovered grade of 1.3 kg Ag/t. Additional unrecorded ounces
were produced at shallow levels in the Spanish colonial era between 1548 to 1729, while the Royal
Santa Ana mines were in production twelve kilometres to the north of the Frias Mine.
Frias occurs within an extension of the same vein system hosting the Royal Santa Ana mine group.
The Frias mine occurs in or near a package of parallel veins including the Frias, Welton and Plaza
veins. These veins are spaced approximately 200 metres apart, similar to the grouping of parallel
veins hosting the Royal Santa Ana mines. The nearby, shallow Calamonte mine (Sessions Papers
House of Commons, 1902) was in early development and expected to replace the Frias Mine after it
was exhausted. Both mines ceased operations in 1900 due to political instability in the region and
high material prices. The Plaza vein, 200 metres and parallel to the Frias vein was also reported to
have similar potential to the Frias Mine, as indicated by underground exploration drifts.
Figure 2. The Frias Mine is hosted by the same vein system and is inferred to be a model analogue
to the seven shoots discovered to date by Outcrop. A stope and level map of the Frias Mine located
on the Santa Ana project, twelve kilometers from the Royal Santa Ana mines. The stopes mapped
suggest the long axis of mined shoot plunges from the upper left to the lower right at an angle within
the plane of the vein. (CNW Group/Outcrop Silver & Gold Corporation)
Santa Ana Project Expanded to Over 36,000 Hectares
Outcrop has increased the footprint of its Santa Ana project in the productive Mariquita district by
adding over 8,000 hectares of claims to consolidate a total land package of 36,255 hectares. The
most recently added claims extend the property boundaries to the west-northwest and fill-in gaps in
the south and eastern portions of the Santa Ana project.
Figure 3. Property map showing more recent claims in yellow. (CNW Group/Outcrop Silver & Gold
Corporation)
QA/QC
Core samples are sent to either Actlabs in
Medellin
or ALS Chemex in
Medellin
for preparation and
then to ALS Chemex in
Toronto
or
Lima, Peru
for analysis. In line with QA/QC best practice,
approximately three control samples are inserted per twenty samples (one blank, one standard and
one field duplicate). The samples are analyzed for gold using standard fire-assay on a 50-gram
sample with a gravimetric finish. Multi-element geochemistry is determined by ICP-MS using either
aqua regia (ME-MS41) or four acid (ME-MS61) digestion. Comparison to control samples and their
standard deviations indicates acceptable accuracy of the assays and no detectible contamination.
About Santa Ana
The 100% owned Santa Ana project comprises over 36,000 hectares located in northern Tolima
Department,
Colombia
, 190 kilometres from
Bogota
. The project consists of five or more regional
scale parallel vein systems across a trend 12 kilometres wide and 30 kilometres long. The Santa
Ana project covers a significant part of the Mariquita District where mining records date to at least
1585. The Mariquita District is the highest-grade primary silver district in
Colombia
, with historic
silver grades reported to be among the highest in
Latin America
from dozens of mines. Historic
mining depths support a geologic and exploration model for composite mesothermal and epithermal
vein systems having mineralization that likely extends to great depth. At Santa Ana it is unlikely that
there is sharp elevation restriction common to high-grade zones in many epithermal systems with no
mesozonal component.
At the core Royal Santa Ana project, located at the northern extent of just one of the regional vein
systems controlled by Outcrop, seven high grade shoots have been discovered – La Ivana hanging-
wall and footwall (La Porfia vein system);
San Antonio
,
Roberto Tovar
,
San Juan
(Royal Santa Ana
vein systems); El Dorado (El Dorado and El Paraiso vein systems) and Megapozo (El Paraiso vein
system). Each zone commonly contains multiple parallel veins. The veins can show both high-grade
silver and high-grade gold mineralization and low angle veins appear to connect more common high
angle veins.
Outcrop drilling indicates that mineralization extends from surface or near surface to depths of at
least 300 metres. Cumulatively, over 60 kilometres of mapped and inferred vein zones occur on the
Santa Ana project. The Frias Mine on the south-central part of the project, 12 kilometres south of
the Royal Santa Ana Mines produced 7.8 million ounces of silver post-production in the Spanish
colonial era at a recovered grade of 1.3 kg Ag/t. The Frias Mine is considered an analogue to the
seven shoots discovered to date by Outcrop.
Outcrop has advanced numerous target areas to the north, including north
Eldorado
that comprises
the northern extension of seven Royal Santa Ana veins for over 1 kilometre. The north
Eldorado
shows high values over 3.0 kg Ag/t. Between the Royal Santa Ana mines and Frias, veins have been
extended 2.8 kilometres to the south providing strong drill targets in the Espiritu Santo, Maras, and
El Christo veins that show high values up to 5.5 kg AgEq/t. These veins show widths up to 2.8 to 4.0
metres.
Sustainability
Outcrop is committed to sustainable exploration and has implemented environmental protocols, best
operating practices, and community-beneficial programs in Falan. Some of the established and
operating protocols and programs include high environmental standards for surface exploration and
drilling, environmental education and recycling programs for the community and company workers,
and collaborative efforts with local authorities and families for construction of apiaries and
sustainable gardens. Additionally, 60% of the Santa Ana´s project work force is local and 100% is
Colombian.
About Outcrop
Outcrop is rapidly advancing exploration on five silver and gold exploration projects with world-class
discovery potential in
Colombia
. Outcrop is currently drilling and expanding the Santa Ana historic
high-grade silver district. These assets are being advanced by a highly disciplined and seasoned
professional team with decades of experience in Colombia.
Qualified Person
The technical information in this news release has been approved by Joseph P Hebert, a qualified
person as defined in NI43-101 and President and Chief Executive Officer of Outcrop.
ON BEHALF OF THE BOARD OF DIRECTORS
Joseph P Hebert, Chief Executive Officer
Mars Investor Relations
+1 775 340 0450
+1 647 557 6640
www.outcropsilverandgold.com
Neither the TSX Venture Exchange nor its Regulation Services Provider (as such term is defined in
the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of
this release. Certain information contained herein constitutes "forward-looking information" under
Canadian securities legislation. Generally, forward-looking information can be identified by the use
of forward-looking terminology such as "potential", "we believe", or variations of such words and
phrases or statements that certain actions, events or results "will" occur. Forward-looking
statements are based on the opinions and estimates of management as of the date such
statements are made and they are subject to known and unknown risks, uncertainties and other
factors that may cause the actual results, level of activity, performance or achievements of Outcrop
to be materially different from those expressed or implied by such forward-looking statements or
forward-looking information, including: the receipt of all necessary regulatory approvals, capital
expenditures and other costs, financing and additional capital requirements, completion of due
diligence, general economic, market and business conditions, new legislation, uncertainties
resulting from potential delays or changes in plans, political uncertainties, and the state of the
securities markets generally. Although management of Outcrop have attempted to identify
important factors that could cause actual results to differ materially from those contained in
forward-looking statements or forward-looking information, there may be other factors that cause
results not to be as anticipated, estimated or intended. There can be no assurance that such
statements will prove to be accurate, as actual results and future events could differ materially
from those anticipated in such statements. Accordingly, readers should not place undue reliance
on forward-looking statements and forward-looking information. Outcrop will not update any
forward-looking statements or forward-looking information that are incorporated by reference
herein, except as required by applicable securities laws.
SOURCE
Outcrop Silver & Gold Corporation
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For further information:
Joseph P Hebert, Chief Executive Officer, +1 775 340 0450,
[email protected], www.outcropsilverandgold.com; Mars Investor Relations,
+1 647 557 6640, [email protected]
CO: Outcrop Silver & Gold Corporation
CNW 08:00e 15-NOV-21