Oroco Announces Significant 3D IP Survey Results
OROCO RESOURCE CORP.
1201-1166 Alberni Street, Vancouver, BV V6E 3Z3
T: 604.688.6200 F: 604.688.6260
www.orocoresourcecorp.com
January 27, 2021 NEWS REL EASE
FOR IMMEDIATE RELEASE:
OROCO ANNOUNCES SIGNIFICANT 3D IP SURVEY RESULTS
VANCOUVER, British Columbia – (January 27, 2021) Or oco Resource Corp. ( TSX-V: OCO, US
OTC: ORRCF, BF: OR6 ) ("Oroco " or "the Company ") is pleased to announce significant results
from the deep, three-dimensional, Induced Polarizat ion (“3D IP”) geophysical survey of its Santo
Tomas porphyry copper project in Mexico. The surve y is now approximately 80% complete, and
Oroco has received preliminary inversion data for a ll stations surveyed to date. The preliminary
inversion model has successfully mapped the resisti vity and chargeability characteristics along a
swath 2.1 km wide by 4.3 km along strike over the S outh Zone, North Zone and part of the Brasiles
Zone. The survey has reached the southern fringe o f the prominent Brasiles zone gossans.
Geophysical crews have now re-mobilized to complete the planned program and to prepare
additional survey lines to enlarge the north and so uth-east extents of the current survey area. The
Company has high confidence in the survey results.
"The preliminary 3D IP inversion modelling has reve aled an extensive area of strong chargeability
response that encloses the known North Zone deposit and extends beyond the historical drilling to
the north, the west and to depth,” said Craig Dalzi el, Oroco’s CEO. “The response broadens below
the North Zone and extends northward under the Bras iles limestone cap. It is particularly
informative and instructive. The first 800 m of mo delling of the Brasiles Zone indicates that the
North and Brasiles Zones are a contiguous explorati on target spanning an average of one kilometer
in width and a minimum of two kilometers along stri ke at the 100 m level elevation. The model
remains open to the north. In addition, the survey very importantly demonstrates a strong
correlation between the chargeability features and the historical drill results in the South and North
Zones as well as significant exploration potential lateral to both. In short, we are extremely pleased
with the survey results."
The preliminary survey data support the following observations:
Chargeability : The preliminary inversion model clearly identifi es the known sulphide
mineralization in the central axis areas of the Sou th and North Zone deposits and appears to
map this parameter to a depth of approximately 600 meters.
South Zone: Results show a chargeability-high and resistivity -low response spanning
1,000 m wide by 1,200 m long in horizontal plan vie w that correlates well with the 10
widely spaced historical drill holes. The response is located below capping volcanic and
limestone units and above the contact with an infer red Laramide batholith exposed to the
OROCO RESOURCE CORP.
1201-1166 Alberni Street, Vancouver, BV V6E 3Z3
T: 604.688.6200 F: 604.688.6260
www.orocoresourcecorp.com
south and west of the South Zone. The responses de fine a wedge 200 to 400 m thick at the
western limit, increasing to 600 m on the surveyed area's eastern fringe. The responses are
open at depth and to the east. The South Zone surv ey will be extended eastward to better
constrain the response.
North Zone: A 1,000 m wide, strong chargeability-high response is broader than indicated
from historical drilling. Notably, the chargeabili ty-high response extends westward of the
Company's 3D geological model of the mineral deposi t (the 2009 Gradeshell of Cu >
0.30%), under the concealing limestone cap of the S anto Tomas ridge. Responses extend to
the 600 m depth-limit of the 3D IP survey, which is often significantly deeper than the
historical drilling. Results also indicate drill t argets that lie at a shallower depth below the
Santo Tomas ridge than previously estimated.
North Zone to Brasiles Zone: 3D IP preliminary inversion modelling delineates an NNE
striking, west-dipping, chargeability-high response extending from the North Zone to the
prominent gossan of the Brasiles Zone. These resul ts demonstrate a shallow-seated,
chargeability-high response beneath the Brasiles li mestone horizon, similar to the North
Zone. (See the attached Figure 2, Longitudinal Section P-20.)
The survey is being undertaken by DIAS Geophysical of Saskatoon, SK ("DIAS") and utilizes their
DIAS32 direct current resistivity and induced polar ization ("DCIP ") system using a rolling layout
of transmitter locations and a large receiver array that is advancing the survey in successive swaths
from the south towards the north. The preliminary inversion information will be subject to
additional quality control procedures and certain m odelling constraints from Oroco's 3D geological
model when the final data set is obtained. The DIA S Geophysical DCIP system's novel design has
enabled surveying of rugged cliffs and areas that a re not otherwise accessible for conventional
induced polarization systems. The method also prov ides coverage to depth and is a robust method
for drill targeting.
Mr. Paul McGuigan, P. Geo., of Cambria Geosciences Inc., a Qualified Person under NI 43-101
and a senior consulting geoscientist to the Company , has reviewed and approved the technical
disclosures in this news release.
ABOUT OROCO :
The Company holds a net 61.4% interest in the colle ctive 1,172.9 ha core concessions of the Santo
Tomas Project in NW Mexico and may increase that majority interest up to an 81.0% interest with a
project investment of up to CAD$30 million. The Co mpany also holds a 77.5% interest in 7,807.9
ha of mineral concessions surrounding and adjacent to the core concessions (a total project size of
8,980.8 ha). The Project is situated within the Sa nto Tomas District, which extends from Santo
Tomas up to the Jinchuan Group's Bahuerachi project, approximately 14 km to the north-east.
OROCO RESOURCE CORP.
1201-1166 Alberni Street, Vancouver, BV V6E 3Z3
T: 604.688.6200 F: 604.688.6260
www.orocoresourcecorp.com
Figure 1: Level Plan view at 100 m elevation above RL (“Reference Level,” mean sea level) through the North
Zone and southern Brasiles Zone, Santo Tomas projec t, illustrating the continuity of the preliminary i nversion
model of chargeability from North Zone to Brasiles Zone.
OROCO RESOURCE CORP.
1201-1166 Alberni Street, Vancouver, BV V6E 3Z3
T: 604.688.6200 F: 604.688.6260
www.orocoresourcecorp.com
Figure 2: Longitudinal cross-section A – A’ (refe r to Figure 1) through North Zone and southern Bra siles Zone, illustrating the continuity of +15.8 mV /V
chargeability response from North Zone to Brasiles. The qualitative concordance between the geological model of the North Zone deposit (the “2009
Gradeshell”), lithologies, historical drill results, and the preliminary inversion model of chargeability is demonstrated.
OROCO RESOURCE CORP.
1201-1166 Alberni Street, Vancouver, BV V6E 3Z3
T: 604.688.6200 F: 604.688.6260
www.orocoresourcecorp.com
Santo Tomas hosts a significant copper porphyry dep osit defined by prior exploration spanning
from 1968 to 1994. The property was tested during that time by over 100 diamond and reverse
circulation drill holes, totaling approximately 30,000 meters. Based on data generated by these drill
programs, a Prefeasibility Study was completed by Bateman Engineering Inc. in 1994.
The Santo Tomas Project is located within 160 km of the Pacific deep-water port at Topolobampo
and is serviced via highway and proximal rail (and parallel corridors of trunk grid power lines and
natural gas) through the city of Los Mochis to the northeast and the city of Choix. The property is
reached from Choix either by highway and then boat access on the Huites Reservoir, or by way of a
32 km access road which was initially built to serv ice Goldcorp's El Sauzal Mine in Chihuahua
State. The reader is directed to the Oroco's August , 2019 Technical Report filed on SEDAR, as
amended, and on the Company's website at <orocoresourcecorp.com/santo-tomas-technical-report.>
For further information, please contact:
Mr. Craig Dalziel, CEO
Oroco Resource Corp.
Tel: 604-688-6200
www.orocoresourcecorp.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.
Cautionary Note Regarding Forward Looking Information
This news release includes certain "forward-looking information" and "forward-looking statements" (col lectively
"forward-looking statements") within the meaning of applicable Canadian securities legislation. All s tatements,
other than statements of historical fact included h erein, including without limitation, statements rel ating to future
events or achievements of the Company, are forward- looking statements. There can be no assurance that such
forward-looking statements will prove to be accurat e, and actual results and future events could diffe r materially
from those anticipated or implied in such statement s. Many factors, both known and unknown, could cau se actual
results, performance or achievements to be material ly different from the results, performance or achie vements that
are or may be expressed or implied by such forward- looking statements. Readers should not place undue reliance
on the forward-looking statements and information c ontained in this news release concerning these matt ers. Oroco
does not assume any obligation to update the forwar d-looking statements should they change, except as required by
law.