Attu Zinc-Lead-Silver-Copper Property
Overview
The Attu Project is located on the Island of Attu, in the municipality of Parainen, in Southwest Finland.
Quick Facts:
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A measured resource of 5.3 million tons
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Partek/Outokumpu conducted test mining and prepared feasibility study in the early 1980’s
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An additional 5.5 million tons of similar grade inferred ore defined by less drilling
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Property zoned for mining in accordance with the official land use plan
History
Attu was the site of historic silver mining at bedrock surface in the 17th century but it was only after the last World War that it was investigated for zinc, copper and lead, in addition to silver using modern methods. These investigations were mainly core drilling and some surface and near surface sampling. This work, done mostly by Partek and Outokumpu, led to a detailed feasibility study and mining plans in 1982, but the deposit was deemed economically marginal at the time and the project mothballed. However, this proposal was incorporated into the zoning of the land, in accordance to the official land use plan (Municipality of Parainen), and is in effect today. It is estimated that in today’s euros, the value of past exploration work on the property exceeds 5 million.
Outokumpu held rights to the deposit as a ‘kaivospiiri’ until recently. A claim covering the deposit giving mineral rights was granted in August 2006, and is under the ownership of Attu Zinc Ltd. through its recent property agreement with Magnus Minerals Ltd
Mineralization
Attu has a 4 km strike length of Zinkgruvan-type mineralization in Proterozoic carbonates in a belt considered to be continuation of Bergslagen district of Sweden. The deposit contains zinc, lead, and silver and an untested copper zone has been intersected at depth.
Map below shows the known mineralization in plan view.
To see in section, click here: Section 102, Section 106, Section 110
High Grade Zones
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Grade/Tonnage
Partek/Outokumpu mining feasibility study from the early 1980’s defined resource: open pitable 2.8 Mt @ 1.81% Zn, 1.1% Pb, 0.14% Cu, 43 ppm Ag, plus 1.5 Mt underground @ 1.68% Zn, 0.96% Pb, 0.21% Cu, 43 ppm Ag. Attu Zinc Ltd's preliminary modeling indicates the resource at 5.3Mt and has identified an extension at depth of an additional 5.5 Mt. The value of the ore increases at depth and there is indication of an untested copper zone which could add substantially to the value of the deposit.
The total in situ value of the ore (measured and indicated) is estimated at 890 million euros.
Trenching work at Attu in November 2006
Potential to Add to the Resource
There is great potential to add to the size of the Attu resource:
Attu Work program