ECR Minerals plc (LON:ECR) Update on Creswick Gold Project, Victoria, Australia

ECR Minerals plc (LON: ECR), the precious metals exploration and development company, is pleased to announce the results of further analysis of samples from reverse circulation (RC) drilling completed earlier this year at the Creswick gold project in Victoria, Australia.

The Creswick project is 100% held by ECR’s wholly owned Australian subsidiary Mercator Gold Australia Pty Ltd (“MGA”).

HIGHLIGHTS

  • Final results have been received from 129 ‘full bag’ tests and assay of 74 duplicate sub-samples collected when drilling. The highest grade duplicate result of 80.97 g/t gold came from a 1 metre interval that originally assayed 44.63 g/t (announced on 8 May 2019). The ‘full bag’ test of the remainder of the material gave a result close to the average of the two sub-samples at 63.03 g/t (announced 27 August 2019).
  • Grade variability due to the nugget effect has been demonstrated, but some consistency between results has been seen, and indicates the effect may be less severe than initially thought.
  • The data generated has been provided to Dr Simon Dominy, a noted expert on nuggety gold systems, for geostatistical analysis to quantify the nugget effect and evaluate the representativeness of the larger samples. The findings of this work will guide ECR’s next steps at Creswick.
  • On the basis of work undertaken to date ECR considers Creswick a highly important strategic project as part of MGA’s Victoria goldfields portfolio of five projects.

Craig Brown, Chief Executive Officer of ECR Minerals plc, commented:

“These results confirm the presence of nuggety gold mineralisation in the Dimocks Main Shale (DMS) at Creswick, some of which is very high grade.

MGA’s tenement position at Creswick covers approximately 7 kilometres of the DMS trend, and our drilling earlier this year only tested approximately 300 metres of this.

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We therefore believe there is significant potential upside in the project, and we are now considering how best to build on the results obtained from Creswick to date to create value for ECR shareholders.

Creswick is one of five projects owned by ECR within the Victoria goldfields and forms part of what is rapidly becoming a highly significant and strategic portfolio in the region.”

FURTHER INFORMATION

The initial results of RC drilling at Creswick by MGA were announced on 8 May 2019, and there was evidence that the results were subject to a nugget effect.

In order to assess the significance of this effect, MGA’s consultants devised a testing program using gravity and electrostatic concentration (GEC) on full bags of RC drill cuttings, which would constitute the whole sample recovered from each metre of drilling (less sub-samples obtained at the time of drilling via a splitter mounted on the drill rig).

In nuggety gold systems, increasing sample size increases the chance of nuggets being captured in the sample, and thus being appreciated as part of the gold endowment of the system.

Typically, only a small sub-sample of the drill cuttings generated by each metre of RC drilling is analysed (assayed) for gold. In the case of MGA’s 2019 RC drilling at Creswick, two sub-samples of approximately 2 kilograms were obtained from the rig-mounted splitter, out of up to approximately 30 kilograms of cuttings per metre. The first sub-sample was sent for assay by the Leachwell method at Gekko Systems, an independent laboratory in Victoria, and the results were announced on 8 May 2019.

Using the GEC method on the full bags, MGA was able to subject larger, more representative sample sizes to analysis. More details regarding the GEC testing process are given in ECR’s announcement dated 27 August 2019, which can be viewed at the following link:

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https://polaris.brighterir.com/public/ecr_minerals_plc/news/rns/story/xq2j1qx

In parallel, 74 duplicate sub-samples obtained at the time of drilling via the rig-mounted splitter have been analysed by the Leachwell method at Gekko Systems. This has been done to enable comparison with the assay results (obtained by the same method) for the first set of sub-samples, which will assist in classifying the nugget effect as extreme, major or minor.

RESULTS OF ANALYSIS

A total of 129 ‘full-bag’ samples were analysed using the GEC process.

  • In the case of 102 samples, no gold had been detected in the first sub-sample analysed by the Leachwell method. In 6 of these samples, the GEC process detected gold (up to 0.55 g/t).
  • In the case of 9 samples, the GEC process returned a higher gold grade than analysis of the first sub-sample.
  • In the case of a further 9 samples, the GEC process returned a lower gold grade than analysis of the first sub-sample.
  • In the case of a further 9 samples in which gold had been detected in analysis of the first sub-sample (up to 0.11 g/t), no gold was detected by the GEC process.

Full update HERE 

 

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