A small area centred ~110 km south-east of Copley is being explored for possible buried economic Beltana style zinc silicate mineralisation, as well as for possible epigenetic hydrothermal lead-zinc sulphide and copper mineralisation. During...
A small area centred ~110 km south-east of Copley is being explored for possible buried economic Beltana style zinc silicate mineralisation, as well as for possible epigenetic hydrothermal lead-zinc sulphide and copper mineralisation. During 2015-2016, as follow-up to anomalous results obtained from Perilya's surface geochemical sampling done in 2013, some infill FPXRF spectrometric analyses and rock chip sampling were performed over two base metal target areas. At the North Emu Bore target, 126 FPXRF soil readings and 4 rock chip samples were collected; this included coverage of the southernmost end of Target C located ~1 km north of Emu Bore. The FPXRF measurements failed to extend the limits of the existing anomalies, returning maximum readings of only 851 ppm Zn and 245 ppm Pb. The rock chip sampling also failed to identify any significant zinc silicate mineralisation pathfinder element signatures. One elevated assay value of 1166 ppm Zn was obtained on the southern end of Target C. At the Anomaly 5795 target, 103 FPXRF readings were collected. A cluster of sample sites at the southern end of this target was found to have >1000 ppm Zn, but they consisted essentially of exposed bedrock with little or no soil cover. This area will be further evaluated with rock chip sampling and infill FPXRF measurements. During 2016-2017, a limited amount of pXRF infill surveying and rock chip sampling was completed, with exploration efforts focused on the North Emu Bore and Anomaly 5795 in the central portion of the tenement and at the Reaphook Scholzite deposit in the southern portion of the tenement. A total of 230 pXRF soil readings were taken and 9 rock chip samples collected for major and trace element analysis. At North Emu Bore/Anomaly 5795, 93 soil readings were taken across 4 lines along strike of previously identified anomalism, taking in interpreted structures and areas of the Callana breccia that is associated with zinc silicate mineralisation in the Beltana area. No significant base metal results were returned from the work with a maximum of 828 ppm Zn & 823 ppm Pb returned. Copper results did not exceed 75ppm. Previously identified zinc anomalism was <200 m in strike length, and not considered to be supportive of a large base metal deposit, as such Perilya do not recommend and further work in the area. The remaining of the soil readings and rock chip sampling was completed at the Reaphook deposit (137), with the aim of refining further the zinc anomalism identified in the area previously. The most significant anomaly retuned in the area is an anomalous are with a strike length of ~400 m, 500 m northeast of the Reaphook deposit along an interpreted fold structure, and returned Zn results up to 8694 ppm. The anomaly is associated with Woodendinna dolomite in contact with Parachilna Formation sandstones. The Reaphook Scholzite deposit remains the last valid exploration target on the Reaphook tenement along with the zinc anomalies identified proximal to the deposit. Two separate portions of EL 5234 together comprising 27 square km or ~48.2% of its former area were relinquished by the JV partners at licence expiry on 26/9/2017, prior to the renewal of tenure for a fifth 5-year term. During 2017-2018, on renewed EL 6132, a program of infill pXRF soil surveying was completed over the greater Reaphook Scholzite target in the with a total of 346 XRF soil readings were taken on 50m spaced lines. The aim of the survey was to further refine the targeting of a future drilling program. A total of 3 rock chip samples were collected during the year and submitted for major and trace element analysis. The survey was successful in defining two target areas for further investigation. The first to the east of the Reaphook Mining Lease which extends approximately 400 m in the Woodendinna dolomite with a maximum value of 3.2% Zn, and a second east-west trending anomaly 200 m to the north has a maximum 1.3% Zn and extends 500 m along the Parachilna Formation – Woodendinna contact.
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