Kisinka Project - Large Copper Anomaly Confirmed
Power Metal Resources plc (LON:POW) the AIM listed African focused metal exploration and development company is pleased to announce findings drawn from the final report on its exploration programme at the Company’s Kisinka Copper-Cobalt project (“Kisinka” or the “Project”) in the Democratic Republic of the Congo (“DRC”).
Paul Johnson, Executive Director of Power Metal Resources plc commented: “We have confirmed the presence and potential significance of copper mineralisation along the Undifferentiated Roan horizons within our license.
Undifferentiated Roan represents Roan rocks of the Roan 1, Roan 2 and Roan 3 Subgroups and the Neoproterozoic Roan Group of central Africa which are host to some of the world's largest and highest-grade sedimentary rock-hosted copper-cobalt deposits the copper belts of Zambia and the DRC.
Given the substantial 6.8km length and size of the copper anomalous area and the presence of rocks from the important mineral-bearing R2 stratum in a license along strike, there are sufficient indications that the tenement may be host to a significant copper target to justify immediate further exploration.
The Company is considering its exploration options for the next stage and expects to begin a new exploration programme shortly.”
Exploration Report Summary:
Figures referenced below are also available on the Company’s website through the following link:
- A total of 663 termite mound soil samples (excluding quality control samples) were collected over the entire 62 mining square tenement (approximately 50 square kilometres) using a grid of 400m x 200m on 23 North-South oriented lines (Fig 1);
- Each 2 kg sample was taken from each termite mound at 1m height and after penetrating the mound to a depth of 50-70 cm;
- The samples were taken to the Minerals Exploration Associated Sarl (“Minex Consulting”) office in Lubumbashi. Each sample was then split into two pulp samples of 50g, with one tested by a Niton XRF (x-ray fluorescence spectrometry) analyser and the other being kept should the Company wish to send to a laboratory for ICP AES (inductively coupled plasma atomic emission spectroscopy) analysis if required;
- XRF readings provide immediate feedback on metal content, which is useful in the exploration process as a cost-effective early identification tool. In respect of copper grades, XRF testing conducted in line with best practice (including the use of field duplicate samples correlating closely with original results to demonstrate precision and high quality sample preparation) can deliver grades that correlate closely with assay testing, however as outlined below, cobalt is less definitive;
- At an appropriate stage of exploration and where precision data is required regarding metal grade, verification through assay testing at independent laboratories is required and POW will undertake this assay testing process where deemed necessary and provide results to the market;
- The XRF results have identified a 6.8 km by 600m copper-in-soil anomaly oriented SE-NW with copper values up to 210 parts per million (“ppm”) (Fig 2). Peak values occur in the southern part of the tenement and correlate well with the undifferentiated Roan horizon which is known as a host of copper and cobalt mineralisation in the Central African Copperbelt;
- Two main copper-manganese anomalous zones were identified within the main copper trend, one (Zone A) extending 1200m by 400m and striking SE-NW, lying along the undifferentiated Roan (Fig 3), and one (Zone B) extending 1100m by 800m, striking W-E, and occurring in the vicinity of the nose of a fold structure to the SE (Fig 4);
- Zone A and Zone B both partially coincide with natural clearings containing metallophytic (copper tolerant) vegetation typical of the Copper Flora; this can be seen particularly clearly in Zone B where natural clearings are aligned in a curve parallel to the nose of the regional fold with the metal anomalous zone correlating well with the southern clearing (Fig 5);
- Cobalt anomalism though present in the XRF readings, including samples at significant levels, was not correlated with copper and manganese anomalisms and without results from ICP AES testing it is not considered that any conclusions should be drawn as to cobalt anomalism at this stage;
- As noted above copper anomalism was detected at up to 210 ppm by XRF, and Zones A and B are considered highly prospective for further exploration;
- Recommendations for future work are: (a) ground magnetics over the 6.8 km anomalous zone (Fig 6) and possible extensions to detect low magnetic lithologies and understand structure and carbonate rocks; (b) infill termite mound sampling in the anomalous zone on a 50m by 50m grid to check continuity of the anomaly; and (c) some pitting in the anomalous zone to check the lithological units lying below the regolith.
The current phase of exploration activities at Kisinka was announced by the Company on 12 April 2019 and can be viewed through the following link:
Updates on the Kisinka field operations and progress in sample testing were provided by the Company on 2 May 2019, 17 May 2019, and 7 June 2019 and may be viewed through the following links:
Download the full RNS release (PDF)
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