お知らせ • Feb 24
Chesterfield Resources plc Announces High Grade Drill Results & Enlarged 2021 Campaign
Chesterfield Resources plc announced results for its recent diamond drill programme on its copper, gold, zinc and silver exploration project in Cyprus. The company also announces details of its forthcoming integrated exploration programme for the 2021 season, to commence in the next few weeks. High-grade polymetallic massive sulphides and native copper intersected at several locations on primary targets. Highlights include: 2.65m grading 2.8% Cu, 3.0 g/t Au, 3.8% Zn, 30 g/t Ag. Total mineralized intersection width of 11.6m. 2.45m grading 1.4% Cu, 3.0 g/t Au, 4.4% Zn, 38 g/t Ag. Total mineralized intersection width of 16.6m. Native copper encountered in three holes, with copper visible in the core and, unusually, smeared on the drill bit. Successful proof-of-concept drilling programme leads to enlarged integrated exploration campaign for the 2021 season, scheduled to commence in mid-March with percussion drilling and AMT geophysics. Extensive down-hole electromagnetic surveys and gravimetric surveys scheduled to be conducted in April. Diamond drilling campaign contracted to commence at the beginning of May 2021. A total of 2,152.8m in 13 cored holes were drilled in late 2020. The focus of this diamond drill-testing programme was to test the top three ranked target areas, Evlim, Hillside and Kin Valley. At the target area Evlim, drill results clearly indicate a vectoring towards more massive and higher-grade VMS-type sulphide mineralization, with hole 20EV03 intercepting?11.6m of semi-massive sulphides?at a depth of 147.9m that returned an average grade of 0.65% Cu, 1.0% Zn, 2.5 g/t Au, 8.9 g/t Ag including?2.65m grading 2.8% Cu, 3.8% Zn, 3.0 g/t Au, 30 g/t Ag.? Importantly, this lowermost, higher grade interval was found to be faulted off at its lower contact indicating that a larger deposit of this high-grade polymetallic mineralization may be present nearby, across the encountered fault.?? At the Hillside target area, drill hole 20HS02 encountered an interval of?16.6m of sulphide breccia mineralization?at a depth of 137.9m that returned an average grade of 0.36% Cu, 1.1% Zn, 1.2 g/t Au, 9.7 g/t Ag including?a lowermost interval of 2.45m @ 1.4% Cu, 4.4% Zn, 3.0 g/t Au, 38 g/t Ag. The mineralization in this higher-grade interval is present as semi-massive to massive sulphide clasts caught up within a post-mineralization fault suggesting that the source of these polymetallic sulphide clasts came from a nearby high-grade massive sulphide body cut by this fault. Chesterfield is now moving to the next phase of an enlarged exploration programme, scheduled to start in March, including further drill-testing at Evlim, Hillside and Kin Valley.? Target vectoring work, including AMT geophysics, percussion drilling and downhole electromagnetic ("EM") and gravimetric ("gravity") geophysics, followed by diamond drilling are planned to follow up on the successful results at these three priority target areas, in addition to other highly ranked targets that warrant drill-testing. Around 15 percussion drill holes are planned during March and April, to test target zones for presence of blind sulphide mineralisation and to provide boreholes for numerous downhole EM surveys. To increase the scope of these surveys, the percussion holes will be drilled generally deeper than those last year, at around 200-300m. The holes will be lined to enable the survey team to winch a high precision probe down the hole, which acts as a receiver to an electrically charged copper loop on the surface. VMS deposits typically act as good electrical conductors whose conductivity can be picked up by the downhole receiver. Interpretation of the electromagnetic data gathered will allow the survey to potentially identify sulphide deposits some 50m to 100m distance around the hole. This dramatically increases the search area of each hole. Downhole EM is a well-proven discovery tool used at this detailed stage of VMS exploration.