Santo Tomas Drilling Success Continues
January 13, 2022 NEWS RELEASE
SANTO TOMAS DRILLING SUCCESS CONTINUES
VANCOUVER, British Columbia – (Janua ry 12, 2022) Oroco Resource Corp. ( TSX-V: OCO, OTC:
ORRCF) (“Oroco” or “the Company” ) is pleased to announce the receipt of additional assay results from
its drilling campaign at the Santo Tomas property (the “Property”) in northwestern Mexico, having received
the drill results from Holes N004 to N008 in the North Zone deposit. Assay results through the first eight drill
holes have now been received (see Table 1, below, and Figure 1, attached or at the Company’s website Figure
1).
Notably, the best intersection in the 2021 drill program was returned by drill hole N008: a true thickness of
328.3 m of 0.45% Copper Equivalent (see Table 1). A nearby hole, N004, was drilled to test the strong
Chargeability anomaly that extends westward from N008 and the known Nort h Zone deposit. A zone of
Laramide intrusion and altered and c opper mineralized volcanic rocks in N 004 confirms the prospectivity of
the strong Chargeability anomaly, more than doubling the width of the North Zone deposit target at the 200 m
elevation, (see Figure 2, attached or Figure 2). This newly confirmed target lies on the western flank of the
North Zone deposit, concealed beneath a blanket of limestone beds.
Table 1: Significant Assay Intervals in the Santo Tomas 2021 Program, Holes N001 to N008:
Drill Hole
No.
From
(m)
To
(m)
Length
(m) Cu % Mo % Au g/t Ag g/t* CuEQ %
N001 272.6 299.6 27.0 0.18 0.012 0.018 0.82 0.24
" 310.0 565.0 255.0 0.39 0.010 0.045 2.20 0.46
" 571.0 620.0 49.0 0.17 0.003 0.008 1.31 0.18
N002 349.9 630.0 280.1 0.38 0.012 0.025 2.85 0.44
N003 295.0 306.8 11.8 0.31 0.009 0.014 2.85 0.36
" 315.3 333.0 17.7 0.33 0.008 0.017 1.49 0.37
" 339.0 364.5 25.5 0.29 0.015 0.020 2.81 0.36
" 370.0 384.3 14.3 0.50 0.008 0.026 3.33 0.56
" 390.0 597.7 207.7 0.39 0.014 0.019 2.82 0.45
" 601.8 678.0 76.2 0.18 0.002 0.007 2.53 0.20
N004 434.3 498.0 63.7 0.38 0.012 0.017 2.12 0.44
N006 31.0 219.5 188.5 0.39 0.004 0.051 2.29 0.44
" 223.4 277.0 53.7 0.17 0.005 0.011 1.55 0.20
N007 213.9 405.2 191.3 0.32 0.005 0.029 2.93 0.37
" 408.1 518.0 109.9 0.32 0.012 0.018 3.06 0.38
N008 159.8 488.0 328.3 0.38 0.010 0.038 2.60 0.45
Cu Equivalent (CuEq) % = Cu % + (Mo %*3.75) + (Au ppm*0.752). The commodity prices (3-year
Average) used are in $US: Cu $3.20 /lb, Mo $12.00 /lb, and Au $1,650.00 /troy oz. * Ag values are not
used in the CuEq calculations.
OROCO RESOURCE CORP.
1201-1166 Alberni Street, Vancouver, BV V6E 3Z3
T: 604.688.6200 F: 604.688.6260
www.orocoresourcecorp.com
Drill Holes N001 to N003 and N005 to N011 were drilled to test the North Zone deposit perpendicular
to its structural attitude. Core intervals for those holes are within approximately 10% of true
thicknesses.
Hole N004 was drilled to test a geophysical target a nd did not test the North Zone deposit. Core
intervals are not true thickness for that hole.
Hole N005 was ended early, in uns table ground at 38m depth. Ho le N006 was collared adjacent to
that of N005 and was drilled to completion.
Holes N009 to N011 in the North Zone and B001 in the Brasiles Zone are completed.
Before ending drilling operations for the seasonal break, 12 drill holes were completed (11 in the North Zone),
totalling 8,455 m of diamond drilling, mostly in HQ core size. Drilling operations will re-commence on the
North Zone within two weeks. Drilling on the Brasiles Zone has re-commenced with Hole B002, which was
in progress prior to the break.
The Company is very pleased that drilling results continue to confirm the following:
Copper grades in holes N001 to N003, and N006 to N008 are comparable to the historical drilling
reported on each of the cross-sections drilled to date (see Figures 1 to 6, attached or Figures 1-6).
Results continue to confirm the geological conclusions and the 2009 Gradeshell model of Cu > 0.3%
(the “2009 Gradeshell Model”) contained in the current Technical Report (the “Technical Report”)
(Bridge, 2019: See SEDAR, or the Company’s website
www.orocoresourcecorp.com/projects/technical-reports/).
Geological logging indicates copper is present as ch alcopyrite and bornite dissemination and vein
fillings. Pyrite is relatively sparse in the main drill intersections. Sulphide mineralization in the main
intersections on the North Zone are hosted in st rongly potassic-altered volcanic and intrusive rocks
with an overprint of phyllic alteration.
Molybdenum, gold, and silver are elevated in the core across the width of the North Zone and provide
an approximate 15% contribution to the copper equiva lent grade, without factoring for metallurgical
recoveries.
Fracturing, Laramide intrusive dikes, mylonite zones, veining and sulphide mineralization are
controlled by faulting co-eval with the formation of the North Zone deposit. The deposit is confirmed
in drilling to have a strike of N20°E and a dip of 50-55°W, as reported in the Technical Report.
The Santo Tomas Cu-Mo-Au porphyry deposit is an example of the geologic style of Laramide-age porphyry
copper deposits in the southwestern United States and northwestern Mexico. Historical Pre-Feasibility
Studies, recent 3D modelling of historical drilling and several new programs of geophysical surveying have
defined drill targets both for confirmation of historic al mineral resource estimates and for exploration for
additional resources.
The 2021 drill program commenced on the central North Zone mineral deposit and has now spanned 600 m of
strike length on the North Zone. Historical drilling from 1968 to 1994 was primarily vertical and unsuited to
defining the full width and depth of the North Zone. The 2021 program is based on angled drill holes oriented
perpendicular to the re-modelled strike and dip of the deposit and is the first program that features drill holes
that pass from the hanging wall of the North Zone deposit into the footwall and which also features a full suite
of assay information that includes copper, molybdenum, gold and silver.
Drilling confirms that the North Zone is comprised of intensely fractured, potassic- and phyllic-altered andesite
volcanics and Laramide-age porphyritic intrusive dike s. Elevated Mo, Au an d Ag accompany copper assays
along the central axis of the North Zone. Pyrite is relatively low in the core of the North Zone, explaining the
IP response that is in the mid-range of the Chargeability High responses on the Property. In contrast, drilling
into the footwall of the North Zone consistently intersected propylitic-altered andesite. The footwall contains
OROCO RESOURCE CORP.
1201-1166 Alberni Street, Vancouver, BV V6E 3Z3
T: 604.688.6200 F: 604.688.6260
www.orocoresourcecorp.com
abundantly disseminated and vein pyrite, explaining the pronounced Chargeability High and a corresponding
Resistivity Low in the 3D IP modelling.
TECHNICAL INFORMATION AND QUALITY CONTROL & QUALITY ASSURANCE
The historical drilling data employed in this current exploration program was the subject of Data Verification
procedures cited in the current Technical Report. Add itional drill collar verifications were performed in the
current program and collar locations fit closely to th e 2021 survey control. Appropriate QA/QC protocols
governed geological logging, core sampling, sample pr eparation, analyses, and security during the current
program, including quality controls with duplicates, st andards, and blanks. Samp les were submitted to the
Mexican division of ALS Limited in Hermosillo, Mexico, for sample preparation to pulps. Sample pulps are
then sent to ALS Canada Ltd. in Vancouver, Canada, for analysis. Total coppe r and molybdenum contents
are determined by four-acid digestion with AAS finish . Gold was determined by fire assay of a 50-gram
charge, or alternately, for a 30-gram charge (1 Assay ton).
QUALIFIED PERSON
Mr. Paul McGuigan, P. Geo., of Cambria Geosciences Inc., a “Qualified Person” (as defined in NI 43-101 -
Standards for Disclosure for Mineral Projects ) and a senior consulting geosci entist to the Company, has
reviewed and approved the technical disclosures in this news release.
ABOUT OROCO:
The Company holds a net 73.2% interest in the collec tive 1,172.9 ha Core Concessions of the Santo Tomas
Project in NW Mexico. The Company also holds a 77. 5% interest in 7,807.9 ha of mineral concessions
surrounding and adjacent to the Core Concessions (for a total project area of 22,192 acres). The Project is
situated within the Santo Tomas District, which extends from Santo Tomas up to the Jinchuan Group’s
Bahuerachi project, approximately 14 km to the north-east. Santo Tomas hosts a significant copper porphyry
deposit defined by prior exploration spanning the peri od from 1968 to 1994. During that time, the property
was tested by over 100 diamond and reverse circulation drill holes, totaling approximately 30,000 meters.
Based on data generated by these drill programs, a historical Prefeasibility Study was completed by Bateman
Engineering Inc. in 1994.
The Santo Tomas Project is located within 160km 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 northern city of Choix. The property is reached by a 32 km access road
originally built to service Goldcorp’s El Sauzal Mine in Chihuahua State.
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” (collectively
“forward-looking statements”) within the meaning of applicable Canadian securities legislation. All statements, other
than statements of historical fact included herein, including without limitation, statements relating 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 accurate, and actual results and future events could differ materially from those anticipated
OROCO RESOURCE CORP.
1201-1166 Alberni Street, Vancouver, BV V6E 3Z3
T: 604.688.6200 F: 604.688.6260
www.orocoresourcecorp.com
or implied in such statements. Many factors, both known and unknown, could cause actual results, performance or
achievements to be materially different from the results, performance or achievements that are or may be expressed
or implied by such forward-looking statements. Reader s should not place undue reliance on the forward-looking
statements and information contained in this news releas e concerning these matters. Oroco does not assume any
obligation to update the forward-looking statements should they change, except as required by law.