VANCOUVER, March 2, 2018 /CNW/ - Chakana Copper Corp. (TSX-V: PERU; OTC: CHKKF; FWB: 1ZX) the "Company" or "Chakana"), is pleased to announce assays from five additional step-out holes in Breccia Pipe 1 (Bx 1) at its Soledad copper-gold-silver project in central Peru, optioned from Condor Resources Inc. The Soledad project (the "Project") is located 35 km south of the Pierina mine in the prolific Miocene metallogenic belt of Peru. These results are a successful continuation of the drilling program that was initiated August 16, 2017, with the results of the first twenty-seven drill holes released previously (see: www.chakanacopper.com). This Phase 1 drilling program is ongoing with a total of 10,629m drilled to date out of an original planned program of 16,660m and is ahead of schedule and under budget.
"One of our initial goals in this drill program was to increase the grade profile from previous explorers by drilling across the pipes to thoroughly test the margin zones", said President and CEO David Kelley. "The results in these last five holes from Bx 1 demonstrate the high-grade nature of this pipe and the margin zone grades at the edge of the pipe. Three of the five holes have very high-grade margin zones such as 10.1m of 2.53% Cu, 7.72 g/t Au, and 26.0 g/t Ag in hole SDH18-044. Hole SDH18-046 has high-grade margin zones on both sides of the breccia pipe with 8.0m of 3.33% Cu, 11.70 g/t Au, and 24.8 g/t Ag on the northeast margin, and 6m of 2.37% Cu, 3.12 g/t Au, and 139.9 g/t Ag on the southwest margin. These higher grades along the margins may be due to a greater amount of open space between the fragments in the breccia during pipe formation, and subsequent mineralization by a hydrothermal fluid. Also included in these results are significantly longer high-grade intercepts across the pipe including 52.0 metres with 1.48% Cu, 5.14 g/t Au, and 60.2 g/t Ag and 78.1 metres with 1.36% Cu, 1.37 g/t Au, and 87.2 g/t Ag."
New mineralized intervals from Breccia Pipe 1 are:
From - To (m)
Core length (m)
Cu- eq %*
Au- eq g/t*
* Cu_eq and Au_eq values were calculated using copper, gold, and silver. Metal prices utilized for the calculations are Cu – US$2.90/lb, Au – US$1,300/oz, and Ag – US$17/oz. No adjustments were made for recovery as the project is an early stage exploration project and metallurgical data to allow for estimation of recoveries are not yet available. The formulas utilized to calculate equivalent values are Cu_eq (%) = Cu% + (Au g/t * 0.6556) + (Ag g/t * 0.00857) and Au_eq (g/t) = Au g/t + (Cu% * 1.5296) + (Ag g/t * 0.01307). Assays for zinc and lead are not used in the metal equivalent calculations.
The true widths of the mineralized intervals reported in this release are difficult to ascertain and additional drilling will be required to constrain the geometry of the mineralized zones.
A total of 9 mineralized breccia pipes have been identified by mapping on the Project thus far. The pipes form a cluster within an area of four-square kilometers and are spaced between 175m to 625m apart with vertical relief between the pipes of over 500m.
The focus of the drilling program is to determine the economic potential of several of the quartz-tourmaline-sulfide breccia pipes that crop out at surface. Phase 1 is directed toward pipes 1 and 5 (Bx 1 and Bx 5). Phase 2 will be an expanded drill program proposed under a Semi-detailed Environmental Impact Assessment permit (EIA-SD) that was submitted for review to the Ministry of Energy and Mines on December 29, 2017. Phase 2 will allow for additional drill platform locations and more drill holes to test several other pipes and targets identified on the Project. Based on detailed mapping, Bx 1 has a surface diameter of 40m and Bx 5 of 50m. Mineralization is open at depth in both pipes based on previous drilling. Current drilling is designed to determine the geometry (volume) and grade of the breccia hosted mineralization. Tourmaline breccia pipes can have diameters that increase at depth, and often have higher grades at the margins of the pipe, interpreted to result from higher permeability of the breccia. Drilling at the Project is designed to test this in each pipe from surface to 400m depth based on: 1) drilling from a central platform at various azimuths and dip angles to penetrate the margin of the breccia throughout its vertical extent; and 2) from platforms outside the pipe to drill across the breccia body. The five holes from Bx 1 reported here were drilled from a step-out platform 80m northeast of the breccia pipe. Mineralized intercepts will vary in length due to the shape of the breccia body and the orientation of the drill hole (see Figure 2). For example, shallow holes drilled near the perimeter of the pipe may have shorter intercepts compared to steeper holes. Nonetheless, all holes that intersect mineralized breccia are important for constraining the overall shape and grade of the breccia body. Once a sufficient number of intercepts are obtained and modelled, the overall geometry of the breccia body and the grade profile will become apparent.
Sampling and Analytical Procedures
Chakana follows rigorous sampling and analytical protocols that meet industry standards. Samples for assay are stored in a secured area until transport in batches to the ALS facility in Callao, Lima, Peru. Samples are processed under the control of ALS with the samples including certified reference materials, a coarse and finely-crushed blank and duplicates samples. All samples are analyzed using the ME-MS41 procedure in order to obtain a comprehensive multi-element overview of the geochemistry. Gold is analyzed by ME-MS41 (considered to be least reliable), AA24 (higher precision) and GRA22 when values exceed 10 g/t. Over limit silver, copper, lead and zinc is analyzed using the OG-46 procedures.
Additional information concerning the Project is available in a technical report prepared in accordance with National Instrument 43-101 made available on Chakana's SEDAR profile at www.sedar.com.
David Kelley, an officer and a director of Chakana, and a Qualified Person as defined by NI 43-101, reviewed and approved the technical information in this news release.
ON BEHALF OF THE BOARD
(signed) "David Kelley" David Kelley President and CEO
Neither TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the Exchange) accepts responsibility for the adequacy or accuracy of this release.
This release may contain forward-looking statements. Forward-looking statements involve known and unknown risks, uncertainties, and other factors which may cause the actual results, performance, or achievements of Chakana to be materially different from any future results, performance, or achievements expressed or implied by the forward-looking statements. Forward looking statements or information relates to, among other things, the interpretation of the nature of the mineralization at the Project, the potential to grow the Project, the potential to expand the mineralization, the planning for further exploration work, the ability to de-risk the potential exploration targets, and our belief about the unexplored parts of the Project. These forward-looking statements are based on management's current expectations and beliefs but given the uncertainties, assumptions and risks, readers are cautioned not to place undue reliance on such forward- looking statements or information. The Company disclaims any obligation to update, or to publicly announce, any such statements, events or developments except as required by law.
Figure 1 – High grade margin zone mineralization from hole SDG18-044 in Bx 1. The six metre interval from 70.0-76.0 averages 2.76% Cu, 8.33 g/t Au, and 19.6 g/t Ag.
Figure 2 – Diagram showing relationship between drill intercepts and breccia pipe geometry with emphasis on vertical and horizontal grade variation. For the purpose of the orientation of the disclosed drill holes, the Company assumes that the breccia pipe is orientated vertically.
SOURCE Chakana Copper Corp
For further information: Michelle Borromeo, Manager - Corporate Communications, Phone: 604-715-6845, Email: [email protected]