Marimaca Copper Extends High-Grade Bornite Zone at Pampa Medina - 6m of 6.11% Cu and 24.0g/t Ag; 40m of 2.04% Cu and 11.1g/t Ag from SPRD-07
On Tuesday, July 07, 2026 at 6:30AM ET
Marimaca Copper Extends High-Grade Bornite Zone at Pampa Medina - 6m of 6.11% Cu and 24.0g/t Ag; 40m of 2.04% Cu and 11.1g/t Ag from SPRD-07
Investor Webinar to be held July 14, 2026
VANCOUVER, BC / ACCESS Newswire / July 7, 2026 / Marimaca Copper Corp. ("Marimaca Copper" or the "Company") (TSX:MARI)(ASX:MC2) is pleased to report additional assay results from ongoing step-out drilling at the Pampa Medina deposit, located approximately 28km east of the Company's Marimaca Oxide Deposit ("MOD") in Chile's Antofagasta Region. Results continue to extend the central high-grade sulphide zone and confirm multiple stacked manto-style copper-silver horizons across the sedimentary and volcanic sequence. Hole SPRD-07 extended the ultra-high-grade bornite zone 300m south of previously released drilling, returning 20m at 2.65% Cu and 13.9 g/t Ag from 564m, including 6m at 6.11% Cu and 24.0 g/t Ag, and 104m at 1.01% Cu and 4.7 g/t Ag from 664m, including 40m at 2.04% Cu and 11.1 g/t Ag. Drilling in SPRD-08B also intersected mineralization in basement metasediments for the first time, indicating potential for depth extensions beyond the previously defined host units.
The Company will also host an investor webinar presentation on Pampa Medina's exploration progress via Investor Meet Company on July 14, 2026. Further details are provided below.
The ongoing step-out program continues to support the geological model: multiple high-grade, stacked mantos with dominantly bornite-chalcocite mineralization hosted in interbedded sediments and volcaniclastics
Drilling extended mineralization into the basement metasediments for the first time at Pampa Medina, with SPRD-08B being the deepest hole drilled to date to a depth of 1,052m
Indicates potential for further extension at depth at Pampa Medina
The nearby Cachorro discovery (Antofagasta Minerals) is primarily hosted in basement tuffs and metasediments (Figure 2)
SPRD-07 - drilled 300m south of previously released SPRD-05 (Figure 4) - intersected multiple stacked high-grade mantos down hole, including
20m of 2.65% Cu and 13.9g/t Ag from 564m (sulphide), including
6m of 6.11% Cu and 24.0g/t Ag from 574m
104m of 1.01% Cu and 4.7g/t Ag from 664m (sulphide), including
40m of 2.04% Cu and 11.1g/t Ag from 670m, including
14m of 3.36% Cu and 17.7g/t Ag from 688m, including
4m of 6.54% Cu and 38.5g/t Ag from 698m
Central high-grade bornite-manto extended 300m south of previously released SPRD-05 (see press release dated June 8th, 2026)
Near surface oxide mineralization also intersected in volcanics 150m west of the historic Pampa oxide footprint
10m of 0.31% Cu and 2.8g/t Ag from 180m (oxide)
SPRD-08B - drilled ~150m south of previously released SMRD-16 and 300m west of SPRD-07 (Figure 4) - intersected broad, consistent mineralization across sediments and tuffs into basement metasediments
660m of 0.41% Cu and 1.8g/t Ag from 386m, including multiple stacked mantos
98m of 1.21% Cu and 7.6g/t Ag from 386m (mixed), including
16m of 2.90% Cu and 21.2g/t Ag from 388m
58m of 1.08% Cu and 6.5g/t Ag from 426m
10m of 1.10% Cu and 1.8g/t Ag from 516m (sulphide)
8m of 0.96% Cu from 580m (sulphide)
14m of 0.83% Cu from 662m (sulphide)
Deeper drilling intersected the mineralized sequence in the basement unit but was impacted by post-mineralization dykes
66m of 0.70% Cu from 802m (sulphide), including
14m of 1.05% Cu from 834m
6m of 1.40% Cu from 862m
SPRD-09, drilled 300m south of SPRD-07 (Figure 6), extended the mineralized sequence but intersected multiple barren dykes orientated WNW
30m of 1.26% Cu and 2.6g/t Ag from 440m (sulphide), including two high-grade stacked mantos
6m of 2.34% Cu and 10.7g/t Ag from 440m
6m of 2.50% Cu and 2.3g/t Ag from 464m
32m of 0.85% Cu and 4.4g/t Ag from 506m (sulphide), including
18m of 1.11% Cu and 7.4g/t Ag from 520m (sulphide)
Drilling continued through favourable rocks into the metasediment unit at depth
6m of 0.77% Cu and 2.0g/t Ag from 940m (sulphide)
6m of 1.05% Cu and 8.3g/t Ag from 1,006m (sulphide)
Sergio Rivera, VP Exploration of Marimaca Copper, commented:
"Our step-out program at Pampa Medina continues to deliver high-grade copper-silver intercepts across the central Area of Interest and further supports our geological model of multiple high-grade stacked mantos. SPRD-07 extended the ultra-high-grade bornite- chalcocite zone 300m south of previous drilling, while SPRD-08B intersected mineralization in basement metasediments for the first time. This is an encouraging development, as it expands the prospective stratigraphy beyond the previously defined host units."
"The area drilled to date at Pampa Medina represents only a very limited portion of the broader Sierra de Medina land package, and we are excited to continue testing the lateral and depth extent of the system following completion of this delineation campaign across the central AOI."
Investor Presentation - Pampa Medina Exploration Update
Marimaca Copper is pleased to announce that Sergio Rivera, VP of Exploration, will host a presentation titled ‘Pampa Medina Exploration Update', alongside Hayden Locke, CEO, and Nico Cookson, President, via Investor Meet Company on July 14th, 2026 at 07:00 PT / 10:00 ET / 15:00 BST.
The presentation is open to all existing and potential shareholders. Questions can be submitted pre-event via your Investor Meet Company dashboard up until July 13th, 2026, 09:00 BST, or at any time during the live presentation. A recording will be made available and hosted on the company's website shortly after.
Investors can register for free with Investor Meet Company and add Marimaca Copper Corp. to their dashboard via:
https://www.investormeetcompany.com/marimaca-copper-corp/register-investor
Investors who already follow MARIMACA COPPER CORP. on the Investor Meet Company platform will automatically be invited.
Overview of Pampa Medina
Pampa Medina is a manto-style copper deposit dominantly hosted in Jurassic-Triassic sedimentary units (sandstones, conglomerates, tuffs and black shales) overlain by andesitic volcanics and underlain by an Upper Paleozoic complex of metamorphosed sediments, volcanics and intrusions (Figure 2). Key lithological units are intruded by a dyke swarm and affected by post-mineral normal faulting. Copper was originally identified in near-surface oxide mineralization dominated by atacamite, chrysocolla and secondary chalcocite, and has now been identified in high-grade zones of bornite, chalcopyrite, covellite and chalcocite which extend at depth beyond the oxide-primary transition. Elevated silver grades are present in both oxide and sulphide copper-mineralized zones and are generally correlated with copper grade.
Following Marimaca's consolidation of the project area and surrounding land packages in 2024, the Company reinterpreted all available geological information and developed an updated geological model for Pampa Medina, which identified the lower sedimentary units of interbedded sandstones, shales, tuffs and conglomerates as the priority target horizons for future drilling. Marimaca's 2026 drilling campaign is focused on three priority goals: definition of the high-grade central AOI, delineating the identified oxide extensions, and further step-out drilling to test potential extensions of the broader system identified in geophysical work completed to date.
Figure 1: Regional Map - Marimaca, Pampa Medina and Regional Infrastructure
Figure 2: Exploration Model Stratigraphic Column
Figure 3: Current Drilling Results within Pampa Medina Area of Interest (AOI)
Figure 4: Current Drilling Results and Drilling to Date within Pampa Medina Area of Interest (AOI)
Figure 5: Cross Section Looking North - Pampa Medina 7,440,650 N
Figure 6: Cross Section Looking North - Pampa Medina 7,440,350 N
| Hole | Total Depth (m) | From (m) | To (m) | Intersection (m) | % CuT | g/t Ag | |
|---|---|---|---|---|---|---|---|
| SPRD-07 | 900 | 52 | 56 | 4 | 0.56 | 1.5 | |
| 180 | 190 | 10 | 0.31 | 2.8 | |||
| 326 | 352 | 26 | 0.25 | Below Detection | |||
| 558 | 860 | 302 | 0.62 | 2.7 | |||
| Including | 564 | 584 | 20 | 2.65 | 13.9 | ||
| Including | 574 | 580 | 6 | 6.11 | 24 | ||
| And | 664 | 768 | 104 | 1.01 | 4.7 | ||
| Including | 670 | 710 | 40 | 2.04 | 11.1 | ||
| Including | 688 | 702 | 14 | 3.36 | 17.7 | ||
| Including | 698 | 702 | 4 | 6.54 | 38.5 | ||
| And | 846 | 858 | 12 | 0.68 | 3.0 | ||
| SPRD-08B | 1,052 | 386 | 1,046 | 660 | 0.41 | 1.8 | |
| Including | 386 | 484 | 98 | 1.21 | 7.6 | ||
| Including | 388 | 404 | 16 | 2.90 | 21.2 | ||
| Including | 390 | 396 | 6 | 4.30 | 31.7 | ||
| And | 426 | 484 | 58 | 1.08 | 6.5 | ||
| And | 516 | 588 | 72 | 0.46 | Below Detection | ||
| Including | 516 | 526 | 10 | 1.10 | 1.8 | ||
| Including | 580 | 588 | 8 | 0.96 | Below Detection | ||
| And | 662 | 676 | 14 | 0.83 | Below Detection | ||
| And | 802 | 868 | 66 | 0.70 | Pending | ||
| Including | 834 | 848 | 14 | 1.05 | Pending | ||
| Including | 862 | 868 | 6 | 1.40 | Below Detection | ||
| And | 930 | 964 | 34 | 0.65 | Below Detection | ||
| SPRD-09 | 1,050 | 192 | 236 | 44 | 0.24 | Below Detection | |
| 434 | 540 | 106 | 0.65 | 2.1 | |||
| Including | 440 | 470 | 30 | 1.26 | 2.6 | ||
| Including | 440 | 446 | 6 | 2.34 | 10.7 |
| And | 464 | 470 | 6 | 2.50 | 2.3 |
| And | 506 | 538 | 32 | 0.85 | 4.4 |
| Including | 520 | 538 | 18 | 1.11 | 7.4 |
| 940 | 946 | 6 | 0.77 | 2.0 | |
| 1,006 | 1,012 | 6 | 1.05 | 8.3 |
Table 1: Table of Intersections. All intervals are reported as downhole lengths. True widths are estimated at approximately 80% of reported intervals.
| Hole | Easting | Northing | Elevation | Azimuth | Inclination | Depth |
|---|---|---|---|---|---|---|
| SPRD-07 | 406800.84 | 7440649.24 | 1274.5 | 270 | -60 | 900 |
| SPRD-08B | 406490.24 | 7440647.07 | 1281.15 | 270 | -60 | 1052 |
| SPRD-09 | 406730.98 | 7440347.77 | 1274.83 | 270 | -60 | 1050 |
Table 2: Drill Collars
Sampling and Assay Protocols
True widths are estimated as 80% of reported intervals, based on down-hole bedding and structural measurements. Diamond drill holes were sampled on a 2m continuous basis, halved by a conventional core splitter on site with one half sent to the Andes Analytical Assay preparation laboratory in Copiapó and the pulps then sent to the same company laboratory in Santiago for assaying. Samples were prepared using the following standard protocol: drying; crushing all samples to -1/4" and passing through a secondary crusher to better than 80% passing -10#; homogenizing; splitting; pulverizing a 400-600g subsample to 95% passing -150#; and a 125g split of this sent for assaying. All samples were assayed for sequential copper %CuT (total copper); %CuS (acid soluble copper), %CuCN (cyanide soluble copper) and CuRes (residual copper). In addition to copper analyses, multi-element analysis including silver (Ag) was undertaken using ICP (multi-element Optical Inductively Coupled Plasma). A full QA/QC program, involving insertion of appropriate blanks, standards and duplicates was employed with acceptable results. Pulps and sample rejects are stored by Marimaca Copper for future reference.
Qualified Person / Competent Person
The technical information in this news release, including the information that relates to geology, drilling and mineralization was prepared under the supervision of, or has been reviewed by Sergio Rivera, Vice President of Exploration, Marimaca Copper Corp, a geologist with more than 40 years of experience and a member of the Colegio de Geólogos de Chile and of the Institute of Mining Engineers of Chile, and who is the Qualified Person for the purposes of NI 43-101 responsible for the design and execution of the drilling program.
The information in this announcement which relates to exploration results for the Pampa Medina Project is based on, and fairly reflects, information and supporting documentation prepared by Sergio Rivera, VP Exploration of Marimaca, a Competent Person who is a member of the Comision Minera (Chilean Mining Commission), Colegio de Geólogos de Chile and of the Institute of Mining Engineers of Chile. Mr. Rivera has sufficient experience that is relevant to the style of mineralisation and types of deposit under consideration and to the activity being undertaken to qualify as a Competent Person as defined in the 2012 Edition of the Joint Ore Reserves Committee Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves. Mr. Rivera consents to the inclusion in this announcement of the matters based on his information in the form and context in which it appears.
Contact Information
For further information please visit www.marimaca.com or contact:
Tavistock +44 (0) 207 920 3150 Emily Moss [email protected]
Forward Looking Statements
This news release includes certain "forward-looking statements" under (without limitation) applicable Canadian securities legislation, including, without limitation, statements regarding the development of activities at Pampa Medina, the potential growth of Pampa Medina, and the discovery's potential to complement the MOD. There can be no assurance that such statements will prove to be accurate, and actual results and future events could differ materially from those anticipated in such statements. Forward-looking statements reflect the beliefs, opinions and projections on the date the statements are made and are based upon a number of assumptions and estimates that, while considered reasonable by Marimaca Copper, are inherently subject to significant business, economic, competitive, political and social uncertainties and contingencies. 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 and the parties have made assumptions and estimates based on or related to many of these factors. Such factors include, without limitation: risks that the development activities at Pampa Medina will not progress as anticipated, or at all, risks related to share price and market conditions, the inherent risks involved in the mining, exploration and development of mineral properties, the uncertainties involved in interpreting drilling results and other geological data, fluctuating metal prices, the possibility of project delays or cost overruns or unanticipated excessive operating costs and expenses, uncertainties related to the necessity of financing, uncertainties relating to regulatory procedure and timing for permitting submissions and reviews, the availability of and costs of financing needed in the future as well as those factors disclosed in the annual information form of the Company dated March 27, 2025 and other filings made by the Company with the Canadian securities regulatory authorities (which may be viewed at www.sedar.com). Readers should not place undue reliance on forward-looking statements. Marimaca Copper undertakes no obligation to update publicly or otherwise revise any forward-looking statements contained herein whether as a result of new information or future events or otherwise, except as may be required by law.
None of the TSX, ASX or the Canadian Investment Regulatory Organization accepts responsibility for the adequacy or accuracy of this release.
This announcement was authorised for release to the ASX by the Board of Directors of the Company.
Appendix 1 - JORC Code 2012 Table 1 (ASX Listing Rule 5.7.1)
Section 1 Sampling Techniques and Data
Criteria JORC Code explanation Commentary
Sampling Nature and quality of sampling (eg cut channels, All current drilling conducted at Sierra Medina, which techniques random chips, or specific specialised industry includes the Pampa Medina deposit, was completed standard measurement tools appropriate to the under the supervision of a registered professional minerals under investigation, such as down hole geologist as a Competent Person/Qualified Person (QP) gamma sondes, or handheld XRF instruments, who is responsible and accountable for the planning, etc). These examples should not be taken as execution, and supervision of all exploration activity as limiting the broad meaning of sampling. well as the implementation of quality assurance programs and reporting.
Include reference to measures taken to ensure sample representivity and the appropriate Drilling reported is Reverse Circulation "RC" calibration of any measurement tools or systems collared and Diamond ("DDH") tailed drilling used.
Assay samples were prepared at a laboratory site Aspects of the determination of mineralisation that in Copiapó and assayed by Andes Analytical Assay are Material to the Public Report. Ltd. (AAA) in Santiago.
In cases where ‘industry standard' work has been Sierra Medina´s diamond drill holes are drilled and done this would be relatively simple (eg ‘reverse sampled on a continuous 2-meter basis, halved by circulation drilling was used to obtain 1 m a conventional core splitter on site, with one half samples from which 3 kg was pulverised to sent to the Andes Analytical Assay preparation produce a 30 g charge for fire assay'). In other laboratory in Copiapó and the pulps then sent to cases more explanation may be required, such as the same company laboratory in Santiago for where there is coarse gold that has inherent assaying.
sampling problems. Unusual commodities or mineralisation types (eg submarine nodules) may Sierra Medina RC holes are drilled and sampled on warrant disclosure of detailed information. a continuous 2-meter basis and riffle split on site up to one-eighth (12.5%) of its volume, after which samples are sent for preparation and assaying.
Marimaca staff supervised all the drilling and sampling.
DD recoveries were controlled by accurate core recovery measurement control was extended toward the division process realized in the drill location.
DD recoveries were measured by core length measurement and compared with the effective core run. Marimaca technical staff checked all data.
Measured recoveries are over 95% for DDH drilling, without significant variations and unrelated to copper grades.
RC recoveries were controlled by weighing samples and accurate control was extended toward the division process realized in the drill location.
RC recoveries were measured in weight percent as compared with a theoretical sample weight. Marimaca technical staff checked all data.
Measured recoveries are over 95% for RC drilling, without significant variations and unrelated to copper grades.
Drilling Drill type (eg core, reverse circulation, open-hole Drilling reported RC collared and DDH-tailed techniques hammer, rotary air blast, auger, Bangka, sonic, drilling, DDH drilling commenced when the etc) and details (eg core diameter, triple or contact between the upper volcanics and upper standard tube, depth of diamond tails, face- sediments is encountered, which is variable in sampling bit or other type, whether core is depth oriented and if so, by what method, etc).
DDH drilling is drilled in HQ and NQ standard core diameters
Drill sample Method of recording and assessing core and chip Sierra Medina´s DDH holes are drilled and recovery sample recoveries and results assessed. sampled on a continuous 2-meter basis, halved by a conventional core splitter on site, with one half Measures taken to maximise sample recovery and sent to the Andes Analytical Assay preparation ensure representative nature of the samples. laboratory in Copiapó and the pulps then sent to the same company laboratory in Santiago for Whether a relationship exists between sample assaying.
recovery and grade and whether sample bias may have occurred due to preferential loss/gain of Sierra Medina RC holes are drilled and sampled on fine/coarse material. a continuous 2-meter basis and riffle split on site up to one-eighth (12.5%) of its volume, after which samples are sent for preparation and assaying.
Marimaca staff supervised all the drilling and sampling.
DD recoveries were controlled by accurate core recovery measurement control was extended toward the division process realized in the drill location.
DD recoveries were measured by core length measurement and compared with the effective core run. Marimaca technical staff checked all data.
RC recoveries were controlled by weighing samples and accurate control was extended toward the division process realized in the drill location.
RC recoveries were measured in weight percent as compared with a theoretical sample weight. Marimaca technical staff checked all data.
Measured recoveries are over 95% for RC drilling, without significant variations and unrelated to copper grades.
Logging Whether core and chip samples have been All holes were geologically logged on digital data geologically and geotechnically logged to a level capture.
of detail to support appropriate Mineral Resource estimation, mining studies and metallurgical The data collected are rock, structure, alteration studies. and mineralization based on drilling intervals, recoveries and analytical results.
Whether logging is qualitative or quantitative in nature. Core (or costean, channel, etc) After validation, the mineral and alteration zones photography. were defined.
The total length and percentage of the relevant The results were entered in the database as a table intersections logged. with all mapped data and a consolidated log of the drill was prepared.
Most of this work was done by experienced senior consultant geologist supported by consultant junior geologist.
In addition to measuring deviations, most of the holes were surveyed using an optical tele viewer (OPTV or BHTV), with structures and orientation measurements, which continuously and thoroughly recorded the holes' walls and measured structures.
The structures were measured in ranks according to their width and the results were reported and plotted on stereographic networks and rosette diagrams.
Sub-sampling If core, whether cut or sawn and whether quarter, Sierra Medina´s DDH holes are drilled and techniques half or all core taken. sampled on a continuous 2-meter basis, halved by and sample a conventional core splitter on site, with one half If non-core, whether riffled, tube sampled, rotary preparation sent to the Andes Analytical Assay preparation split, etc and whether sampled wet or dry. laboratory in Copiapó and the pulps then sent to the same company laboratory in Santiago for For all sample types, the nature, quality and assaying appropriateness of the sample preparation technique. The last split yields "sample A", which is sent for preparation and assaying, and "sample B", which Quality control procedures adopted for all sub- is used to obtain drill cuttings (1 kg) and sampling stages to maximise representivity of coarse/preparation duplicates and then stored in samples. special facilities on site.
Measures taken to ensure that the sampling is DDH samples are obtained every 2 meters from a representative of the in situ material collected, half-core, with the other half stored on site. including for instance results for field duplicate/second-half sampling. RC holes are drilled and sampled on a continuous 2-meter basis and its samples riffle split on site Whether sample sizes are appropriate to the grain three times, up to one eighth (12.5%) of its size of the material being sampled. volume.
The last split yields "sample A", which is sent for preparation and assaying, and "sample B", which is used to obtain drill cuttings (1 kg) and coarse/preparation duplicates, and then stored in special facilities on site.
Samples are transferred by laboratory personnel from the project to Copiapó, and then the preparation pulps are returned to generate the analysis batches. Upon receipt, sample details are logged and insertion points for quality control samples in the sample flow are determined.
Samples were prepared using the following standard protocol: drying; crushing all samples to -1/4" and passing through a secondary crusher to better than 80% passing -10#; homogenizing; splitting; pulverizing a 400-600g subsample to 95% passing -150#; and a 125g split of this sent for assaying. All samples were assayed for sequential copper %CuT (total copper); %CuS (acid soluble copper), %CuCN (cyanide soluble copper) and CuRes (residual copper), and multielement Optical Inductively Coupled Plasma (ICP). A full QA/QC program, involving insertion of appropriate blanks, standards and duplicates was employed with acceptable results. Pulps and sample rejects are stored by Marimaca Copper for future reference.
Laboratory results are loaded directly from digital assay certificates into the database, in order to minimize error sources.
Quality of The nature, quality and appropriateness of the Samples are prepared at a laboratory site in assay data assaying and laboratory procedures used and Copiapó and assayed by Andes Analytical Assay and whether the technique is considered partial or Ltd. (AAA) in Santiago.
laboratory total.
tests Samples were prepared using the following For geophysical tools, spectrometers, handheld standard protocol: drying; crushing all samples to XRF instruments, etc, the parameters used in -1/4" and passing through a secondary crusher to determining the analysis including instrument better than 80% passing -10#; homogenizing; make and model, reading times, calibrations splitting; pulverizing a 400-600g subsample to factors applied and their derivation, etc. 95% passing -150#; and a 125g split of this sent for assaying. All samples were assayed for %CuT Nature of quality control procedures adopted (eg (total copper); %CuS (acid soluble copper). A full standards, blanks, duplicates, external laboratory QA/QC program, involving insertion of checks) and whether acceptable levels of accuracy appropriate blanks, standards and duplicates was (ie lack of bias) and precision have been employed with acceptable results. Pulps and established. sample rejects are stored by Marimaca Copper for future. In addition to copper analyses, multielement analysis including silver (Ag) was undertaken using ICP.
All samples were assayed for sequential copper %CuT (total copper); %CuS (acid soluble copper), %CuCN (cyanide soluble copper) and CuRes (residual copper). Silver and an additional 33 elements were analysed using a 0.5g pulp sample and measured by optical ICP.
Laboratory results are loaded directly from digital assay certificates into the database, in order to minimize error sources.
The analytical quality control programs implemented at Marimaca involve the use of coarse/preparation and pulp duplicates for precision analyses and standard reference materials (SRM). QA/QC procedures apply equally to silver and the multi-element suite.
Marimaca has protocols in place for handling analytical results that exceed acceptable limits, which can ultimately trigger re-assays of entire or portions of sample batches.
Verification The verification of significant intersections by There are no twinned holes in the dataset of sampling either independent or alternative company All logging data was completed, and logging data and assaying personnel.
was entered directly into the deposit database. The use of twinned holes.
Laboratory results are loaded directly from digital Documentation of primary data, data entry assay certificates into the database to minimize procedures, data verification, data storage error sources.
(physical and electronic) protocols.
Discuss any adjustment to assay data.
Location of Accuracy and quality of surveys used to locate Local contractors carried out the supervision of the data points drill holes (collar and down-hole surveys), drilling operation.
trenches, mine workings and other locations used in Mineral Resource estimation. An experienced topographer surveyed the collars.
Specification of the grid system used. WGS84 UTM coordinates are used.
Quality and adequacy of topographic control. Data Well Services carried out the downhole surveys for drill holes.
Data collected is considered adequate for eventual use in mineral resource estimation.
Data spacing Data spacing for reporting of Exploration Results. Due to the nature of mineralisation and the type of and exploration discovery drilling program the hole distribution Whether the data spacing and distribution is spacing is highly variable.
sufficient to establish the degree of geological and grade continuity appropriate for the Mineral Data spacing is not considered sufficient to Resource and Ore Reserve estimation procedure(s) establish geological and grade continuities for and classifications applied. Mineral Resource Estimation at the Inferred and Indicated category.
Whether sample compositing has been applied.
No sample compositing was applied.
Orientation Whether the orientation of sampling achieves Drill hole orientation was generally oriented to be of data in unbiased sampling of possible structures and the sub perpendicular to the mineralisation but relation to extent to which this is known, considering the variable in places given the nature of the geological deposit type. exploration program being conducted
structure
If the relationship between the drilling orientation Assays are reported on a downhole basis and the orientation of key mineralised structures is considered to have introduced a sampling bias, True widths are estimated as 80% of reported this should be assessed and reported if material. downhole intersection widths
Sample The measures taken to ensure sample security. All drilling assay samples are collected by security company personnel or under the direct supervision of company personnel.
Samples from Marimaca were initially processed at the project site and shipped directly from the property to a laboratory facility for final preparation, and later, upon their return, to the laboratory for analysis.
Appropriately qualified staff at the laboratories collect assay samples.
Security protocols implemented maintain the chain of custody of samples to prevent unnoticed contamination or mixing of samples and to make active tampering as difficult as possible.
Audits or The results of any audits or reviews of sampling It is the Competent Person's opinion that these reviews techniques and data. processes met acceptable industry standards, and that the information can be reported under both JORC and NI43-101 standards and, in the future, be used for geological and resource modelling.
Section 2: Reporting of Exploration Results
Criteria JORC Code explanation Commentary
Mineral Type, reference name/number, location and Marimaca Copper Corp. owns a tenement package tenement and ownership including agreements or material consisting of approximately 14,500 hectares at the land tenure issues with third parties such as joint ventures, broader Sierra de Medina project area. The status partnerships, overriding royalties, native title concessions are a mix of mining concessions and interests, historical sites, wilderness or national exploration concessions.
park and environmental settings.
The Sierra de Medina land package comprises 55 The security of the tenure held at the time of concessions owned by ICAL, a subsidiary of reporting along with any known impediments to Marimaca Copper Corp.
obtaining a licence to operate in the area.