Enonkoski
Enonkoski Nickel Belt
The Enonkoski Nickel Belt comprises 40km long sequence of
Mid-Proterozoic supra-crustal rocks intruded by a number of syn- to
post-orogenic mafic/ultramafic intrusions of various sizes along a
major regional structural zone within the Central Ore Belt of Finland.
The area is marked by a large regional gravity high. The only
nickel-copper deposit of size found and developed to date has been the
Enonkoski (Laukankangas) Mine which produced 6.7 Mt tons grading 0.76%
Ni and 0.22% Cu from 1985 to 1994.
Hälvälä
Quick Facts:
- Ni-Cu-Co deposit
- Closed mine with remnant inferred resource of 200,000 tons
- Potential to develop near surface low-grade resource as well as extension of know ore zones at depth and along strike
- 39 holes drilled totalling 14,363m at 25m profile
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Exploration History
Outokumpu Oy discovered the Hälvälä deposit in the early 1970’s and
carried out exploration and development from the late 1970’s to 1988,
when it was put into production. The mine operated for four years,
yielding 250,000 tons of ore averaging 1.4 % Ni and 0.35% Cu.
Magnus holds claims covering the Hälvälä mine and the nearby Makkola
Ni-Cu deposit.
Mine Geology
Hälvälä is the central portion of the Enonkoski Belt and is part of the
Enonkoski nickel project Joint Venture through option agreement with
FinMetal Mining Ltd. Hälvälä contains a historic reserve of 410,000
tons, averaging 1.59% Ni, 0.33% Cu and 0.075% Co. Accounting for prior
production, Hälvälä is estimated to contain a remnant resource of
200,000 tons below the 265m level and is open at depth.
The deposit is along the north contact of a norite intrusion, which
also contains un-tested zones of disseminated nickel sulfides. Country
rocks are mainly sulfidic and graphitic siliceous schists.
Exploration by JV
Under the JV agreement, FinMetal contracted out 6000 line km of
airborne geophysical surveys covering a large portion of the Enonkoski
Belt and drilled two holes below the Hälvälä workings proving the
downward continuation of the deposit. Results are available in
news releases
Potential
Past drilling at Hälvälä indicates
the mineralization to extend to at least the 600-meter level and
remains open at depth and along strike. The possibility exists that the
norite body and mineralization at Hälvälä is continuous with the
Makkola deposit located about 1km to the West.
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