The Prospector News

Orvana Reports Suspension of its Leach-Precipitation-Flotation Plant at its UMZ Mine

You have opened a direct link to the current edition PDF

Open PDF Close

Share this news article

Orvana Reports Suspension of its Leach-Precipitation-Flotation Plant at its UMZ Mine






Orvana Minerals Corp. (TSX:ORV) through its wholly-owned subsidiary, Empresa Minera Paititi advises that, due to certain factors and market conditions, it has suspended the operations of its Leach-Precipitation-Flotation plant at its UMZ Mine in Bolivia.

The Company has been processing its oxides ores at the UMZ Mine using acid produced at site for the LPF plant. The Company has been running the LPF process for a period of 15 days per quarter. The Company has suspended the operations of the LPF plant for a number of reasons including (i) costs of LPF consumables and labour have increased substantially since the start-up of the LPF plant, (ii) recoveries and maintenance of LPF oxide feed have been inconsistent and more recently have been well below forecast, (iii) consumption of acid in processing of oxide ores has also increased recently due to the lithology of oxide ores processed, (iv) the LPF campaigns are significantly higher in costs than the flotation-only campaigns on a unit cost per tonne basis, and (v) current and projected long-term metal prices are lower than previously forecasted.

The Company will continue to process transition ores, which include both copper in oxide minerals and copper in sulphide minerals, by a flotation-only process. The acid plant and other process areas of the LPF plant will be placed on care and maintenance.

As a result of the suspension of operations at the LPF plant for the foreseeable future, management performed a preliminary impairment analysis and expects to record a pre-tax impairment charge of approximately USD$6.5 million in the third quarter of fiscal 2013 for the UMZ Mine. This impairment charge does not include the oxide ores in stockpiles carried at $1.4 million or the oxides in situ. The Company will complete a final impairment assessment by the release of its third quarter 2013 results.

Focus for the UMZ Mine is now on optimizing the flotation process, with additional metallurgical and engineering testing on alternate methods of oxide treatment underway. The Company has been conducting recent additional tests to determine whether oxides can be processed by flotation-only using different reagents. Positive preliminary results from bench tests have been received and next full plant campaign tests are being considered in the upcoming months. The Company intends to continue to stockpile oxides that are stripped for access to the sulphide ores.

The Company remains focused on optimizing operations and increasing cash flow.

About Orvana


Orvana Minerals is a multi-mine gold and copper producer. Orvana’s primary asset is the El Valle/Boinas-Carles gold-copper Mine in northern Spain. Orvana also owns and operates the Don Mario Mine in Bolivia, processing its copper-gold-silver Upper Mineralized Zone deposit. Orvana is also advancing its Copperwood copper project in Michigan, USA.

Posted July 17, 2013

Share this news article


Aya Gold & Silver Intercepts 1,299 g/t Ag over 15m and Continues to Expand Zgounder at Depth

Aya Gold & Silver Inc. (TSX: AYA) is pleased to announce hig... READ MORE

September 21, 2021

IAMGOLD Reports Positive Assay Results from the 2021 Resource Delineation Drilling on the Gosselin Zone and Continues to Extend the Mineralized System - Côté Gold Project, Ontario

IAMGOLD Corporation (TSX: IMG) (NYSE: IAG) is pleased to announce... READ MORE

September 21, 2021

Troilus Drills 4.40 g/t AuEq Over 12 Metres Within a Broader Intersection of 2.10 g/t Over 31 Metres in the J Zone; Confirms +50 Metre Down Dip Mineral Extension

Troilus Gold Corp. (TSX: TLG) (OTCQX: CHXMF) reports additional r... READ MORE

September 21, 2021

Thor Explorations Announces Exercise of Warrants

Thor Explorations Ltd. (TSX-V: THX) (AIM: THX) announces the exer... READ MORE

September 21, 2021

Tarachi Announces Drill Results from San Javier Concession in Sonora, Mexico

Tarachi Announces Drill Results from San Javier Concession in Son... READ MORE

September 21, 2021

We acknowledge the [financial] support of the Government of Canada.

Government of Canada Supported
Copyright 2021 The Prospector News