Early to synorogenic Paleo-Proterozoic (1.89-1.88 Ga) granitoid rocks along the southern part of the Central Finland granitoid complex.
Tract ID 150pCu6110
Country Finland
Commodity Cu
Study area name Finland
Tectonic setting unknown
Deposit type porphyry copper
Grade-tonnage model Precambrian porphyry copper (Geological Survey of Finland, 2014)
Geologic age
Geologic feature age Precambrian
Generalized age Precambrian
Oldest rocks age 1890Ma
Youngest rocks age 1880Ma
Age range 10Ma
Known prospects 5
Mean Cu (t/sq km) 398t/sq km
Map scales used 500, 4K, 10K

Results of the assessment

Assessment date 2012
Estimators Geological Survey of Finland
Assessment depth 1km
Quantitative assessment Yes

Estimated number of deposits

Number of deposits Confidence level
1 90%
2 50%
4 10%
4 5%
4 1%
Mean estimated deposits 2.2 ±1.2 (0.54%)
Probability of mean 0.29
Probability of no copper 0.07

Estimated deposit density

(sq km)
Deposit density
per 100,000 sq km
2.2 5,023 44

Mean estimated tonnage

Copper 2,000,000
Molybdenum 97,000
Gold 230
Silver 2,600
Ore 750

Undiscovered copper resource

Confidence level 90% 50% 10% 5%
Tonnage 9,800 660,000 5,100,000 7,700,000

Economic analysis

Fraser country Finland
Fraser type 0.97%
Fraser high 0.03%
Typical cost 1%
High cost 0%
Infrastructure setting Typical
Comments on depth default
Expected depth distribution
0 - 250m 0.25
250m - 500m 0.25
500m - 1km 0.5
Economically recoverable resources
Copper 340,000t
Molybdenum 14,000t
Gold 26t
Silver 570t
Probability no econ recoverable 0.33
Econ NPV 160x $1M
Exp dollars -9.04x $1M/100,000 sq km
Exp value class Low

Bibliographic references

General Rasilainen and others (2014)
Economic Robinson and Menzie (2012)

Deposits and prospects associated with this tract

Name Type State Country Development Details
Kutemajärvi prospect Häme Finland Occurrence Details
Järvenpää prospect Häme Finland Occurrence Details
Lavajärvi prospect Turka Ja Pori Finland Occurrence Details
Ylöjärvi prospect Häme Finland Occurrence Details
Tammijärvi prospect Keski-Suomi Finland Occurrence Details