Havieron Gold-Copper Project, Paterson Province, Australia & More News Here

The Havieron venture is a high-grade gold and copper deposit being developed in Paterson province, Western Australia.

Newcrest Mining (Newcrest) owns a 60% curiosity within the venture whereas Greatland Gold holds the remaining 40%. Newcrest can improve its possession to 70% and likewise has an possibility to accumulate an additional 5% to take its venture curiosity to 75%.

Construction of a field lower, an exploration decline, and related floor infrastructure started in January 2021.

The feasibility research is predicted to be accomplished in December 2022 whereas first ore is predicted within the first half (H1) of 2024. Gold/copper manufacturing is predicted to start within the second half (H2) of 2024.

Location and geology of the Havieron venture

The Havieron venture is a gold-copper deposit positioned within the East Pilbara Shire of Western Australia. It is located roughly 45km east of the Telfer gold mine, which is operated by Newcrest, and 450km east-southeast from Port Hedland.

The deposit is centred on a deep magnetic anomaly positioned throughout the northwestern publicity of the Palaeoproterozoic to Neoproterozoic Paterson Orogen.

The Havieron prospect is positioned throughout the Yeneena Supergroup, which includes a 9km-thick sequence of marine sedimentary rocks.

Mineralisation and reserves of the gold-copper deposit

Mineralisation is discovered beneath 420m of post-mineralisation Permian cowl in metasedimentary and intrusive rocks.

Gold and copper mineralisation is current within the type of breccia, vein, and big sulphide alternative mineralisation.

The deposit accommodates pyrhotite-chalcopyrite and pyrite sulphide as the key mineral assemblages.

The possible reserves are estimated at 25 million tonnes (Mt), containing 2.4 million ounces (Moz) of gold and 109,000t of copper, grading 3g/t of gold and 0.44% copper, in accordance with the revised estimates launched in March 2022.

Mining at Havieron venture

The Havieron venture will make use of the underground sub-level open stoping (SLOS) mining technique with paste fill and truck ore haulage, in accordance with the PFS. The mine will function at an estimated fee of two million tonnes every year (Mtpa) with an anticipated mine lifetime of 9 years.

The underground mining operation will goal the Crescent Zone. The major stopes might be mined first, adopted by the intermediate secondary stopes. The mining operation will make use of a top-down sequence, divided into a number of lifts separated by horizontal sill ranges.

The design consists of 9 semi-independent mining sequences, primarily based on horizontal and vertical mining fronts.

Processing ore from the Havieron deposit

The ore produced from the mine might be transported to the Telfer gold mine for processing beneath an ore tolling association between the JV companions.

The processing infrastructure on the Telfer facility might be modified to accommodate ore from the Havieron venture.

Havieron ore might be processed utilizing a single practice on the Telfer Train 2 Treatment Plant circuit on a marketing campaign foundation on the fee of roughly 2Mtpa.

The modifications to the processing plant will embody magnetic separation throughout the flotation circuit to cut back the quantity of pyrrhotite within the last copper focus. A carbon-in-pulp (CIP) circuit can even be added to the flotation tail and cyanide detoxing circuit.

Processing will contain conventional flotation strategies. A flotation tails leach circuit to be put in on the processing plant might be used to supply copper/gold focus and dore.

Infrastructure particulars

A 55km-long haul street might be constructed to allow the motion of vans to move ore from the venture to the Telfer processing facility.

Tailings might be saved on the current tailings storage facility on the Telfer website. A waste rock dump, evaporation ponds, and supporting infrastructure equivalent to workplaces and workshops might be constructed.

A 66kV overhead energy line operating parallel to the chosen haul street route will transmit electrical energy from Telfer’s current gasoline energy station to the Havieron venture website. The feasibility research will examine different choices to modify to energy era utilizing non-fossil fuels.

A landfill can be proposed to be constructed to deposit non-mineralised waste.

Contractors concerned

Australia-based Derisk Geomining Consultants was engaged to conduct an impartial overview of the venture’s underground mineral useful resource estimate, which was launched in November 2020.

Underground mining contractor Byrnecut was appointed to undertake works equivalent to website institution, box-cut help, decline growth, shotcrete and raiseboring companies.

Rockwater, a hydrogeological and environmental consulting agency primarily based in Australia, acquired a contract to supply hydrogeological consultancy companies for the venture.

The contractual scope included packer and pumping exams, core logging, nuclear magnetic resonance surveys, and correlation with geotechnical datasets to characterise aquifers throughout the thick Permian overburden.

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