Outokumpu Area - Overview

Altona Mining has a dominant position in the Outokumpu area. It will own:  

·               The Luikonlahti processing plant which is permitted and has all infrastructure and services in place.
·               The 8.1Mt Kylylahti copper-cobalt-nickel deposit which is fully permitted and had a Definitive Feasibility Study completed.
·               The 3.2Mt Hautalampi nickel-copper-cobalt deposit which sits on granted mining licences and is awaiting final approvals.
·               Additional copper-cobalt-zinc-nickel Resources and mineralisation in three deposits within 35km of the Luikonlahti plant.
·               Substantive exploration targets in two nickel-copper deposits.

The Outokumpu mining district is situated within the North Karelia Schist Belt, which is a structurally complex package of amphibolite to granulite facies metasedimentary rocks located at a major crustal tectonic boundary between the Proterozoic Svecofennian belt of rocks to the southwest and the Archaean Karelian Craton to the northeast. The Outokumpu district is dominated by northeast-southwest striking isoclinal folds with subvertical fold limbs. 

The Outokumpu type Cu-Co-Zn sulphide deposits have such special features that they deserve to be classified as distinct type of ultramafic rock related hydrothermal semimassive-massive sulphides. Generally defined, Outokumpu type deposits are Cu-Co-Zn-Ni±Au sulphide deposits that usually occur in close association of serpentinised ultramafic bodies with thin carbonate-silica alteration fringes of talc and carbonate rocks, tremolite-diopside skarns and quartz rocks. In this host environment the Outokumpu type deposits usually occur in the form of thin, narrow and sharply bounded sheets, lenses or rods of massive-semimassive sulphides closely spaced along the contact zones between altered ultramafic rocks and black shales. Thin but longitudinally extensive zones of generally subeconomic, disseminated, stringer or vein type mineralization relatively rich in Co+Ni±Au may parallel the main massive-semimassive sulphides being hosted in the carbonate-skarn-quartz rocks.