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OZ Minerals Ltd.
Summary
| Project: | Carrapateena | |
|---|---|---|
| Deposit: | Fremantle Doctor | |
| Location: | Australia | |
| Commodities: | Copper-Gold-Silver | |
| Date: | 11/12/2018 | |
| Report Code: | JORC | |
| Report Type: | Resource Estimation | |
| Project Stage: | Pursuing Feasibility Study | |
| Report details: | 12-11-2018: OZ Minerals Ltd. announces a Resource Estimation report for its Fremantle Doctor deposit at the Carrapateena project. Updated mineral resource estimate at Fremantle Doctor deposit, resources unchanged for rest of project. The Fremantle Doctor | |
| Resources: | (Resource, Inf.): 104Mt @ 0.7% Cu, 0.5g/t Au, 3g/t Ag at Fremantle Doctor | |
| CP/QP: | [Resources]: Heather Pearce (Internal) | |
| ABSTRACT: | The Fremantle Doctor 2018 Mineral Resource Statement relates to the initial Inferred Mineral Resource estimate for the Fremantle Doctor copper-gold deposit, an iron oxide copper-gold (IOCG) deposit located in central South Australia on the eastern margin of the Gawler Craton (see Figure 1). The estimated Mineral Resource for the Fremantle Doctor deposit is shown in Table 1. The Mineral Resource estimate has been reported in accordance with the 2012 edition of the JORC Code. The Mineral Resource estimate is based on data from 22 drill holes (including 6 wedges) for a total of 31,587 samples in mineralised domains. The geological interpretation and estimation parameters were established. A nominal cut-off of 0.4% Cu has been used to generate a model in which the contained material was deemed to have reasonable prospects of eventual economic extraction. The Fremantle Doctor Breccia Complex is located within the Olympic copper gold (Cu-Au) Province on the eastern edge of the Gawler Craton adjacent to the Carrapateena Project. It is hosted within Donington Suite granite and is unconformably overlain by approximately 480 metres of un-mineralised Neoproterozoic sediments. Mineralisation and alteration is in the form of that seen at other large South Australian iron oxide copper gold (IOCG) deposits, including Prominent Hill and Olympic Dam. Sampling and sub-sampling techniques All basement samples consist of diamond drill core (NQ, NQ2, HQ and PQ) cut with a manual or automatic core saw. The drill core is sampled as half core, except for PQ core, metallurgical holes and field duplicates, where quarter core was sampled. All available basement drill core except for metallurgical holes, and some instances where holes passed through large intervals of granite outside the mineralisation were sampled on 1 metre intervals but respect geological contacts in places. Entire samples were crushed then pulverised. For OZ Minerals drill holes, sample preparation included drying, crushing, and pulverising in full to a nominal 90 percent passing | |
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