Apuseni Mountains

Miocene intrusive and volcanic intermediate and acidic rocks of the Golden Quadrilateral and surrounding areas in the Apuseni Mountains of southern Romania.
Tract ID 150pCu6003
Country Romania
Commodity Cu
Study area name Europe
Tectonic setting postconvergence
Deposit type porphyry copper
Grade-tonnage model Porphyry copper, Cu-Au subtype (Singer and others, 2008)
Geologic age
Geologic feature age Miocene
Generalized age Tertiary-Neogene
Oldest rocks age 23.03Ma
Youngest rocks age 5.332Ma
Age range 17.698Ma
Identified Cu resources 5,700,000metric tons
Known prospects 3
Mean Cu (t/sq km) 2404t/sq km
Map scales used 500K, 1M

Results of the assessment

Assessment date 2010
Estimators Byron R. Berger, Lawrence J. Drew, Jane M. Hammarstrom, Duncan E. Large, David M. Sutphin
Assessment depth 1km
Quantitative assessment Yes

Estimated number of deposits

Number of deposits Confidence level
1 90%
3 50%
6 10%
6 5%
6 1%
Mean estimated deposits 3.23 ±1.88 (0.58%)
Probability of mean 0.27
Probability of no copper 0.07

Estimated deposit density

Known
deposits
Total
deposits
Area
(sq km)
Deposit density
per 100,000 sq km
7 10.23 4,160 246

Mean estimated tonnage

Copper 10,000,000
Molybdenum 57,000
Gold 730
Silver 3,300
Ore 2,000

Undiscovered copper resource

Confidence level 90% 50% 10% 5%
Tonnage 270,000 4,600,000 26,000,000 43,000,000

Economic analysis

Fraser country Romania
Fraser type 0.44%
Fraser high 0.56%
Typical cost 0.27%
High cost 0.73%
Infrastructure setting Mixed
Comments on depth default
Expected depth distribution
0 - 250m 0.25
250m - 500m 0.25
500m - 1km 0.5
Economically recoverable resources
Copper 5,400,000t
Molybdenum 23,000t
Gold 280t
Silver 1,700t
Probability no econ recoverable 0.64
Econ NPV 1,200x $1M
Exp dollars 158.49x $1M/100,000 sq km
Exp value class High

Bibliographic references

General Sutphin and others (2013)
Economic Robinson and Menzie (2012)

Deposits and prospects associated with this tract

Name Type State Country Development Details
Almas prospect Alba Romania Prospect Details
Bucium Tarnita deposit Alba Romania Producer Details
Deva deposit Hunedoara Romania Prospect Details
Musariu deposit Hunedoara Romania Prospect Details
Rosia Poieni deposit Alba Romania Producer Details
Talagiu deposit Arad Romania Prospect Details
Valea Tisei prospect Hunedoara Romania Prospect Details
Ciresata prospect Hunedoara Romania Prospect Details
Draica prospect Hunedoara Romania Prospect Details
Magura prospect Hunedoara Romania Prospect Details
Valea Arsului prospect Hunedoara Romania Occurrence Details
Colnic deposit Hunedoara Romania Prospect Details
Bolcana deposit Hunedoara Romania Past Producer Details
Rovina deposit Hunedoara Romania Prospect Details
Valea Morii deposit Hunedoara Romania Past Producer Details
Voia prospect Hunedoara Romania Prospect Details
Baba-Babuta prospect Alba Romania Occurrence Details
Breaza prospect Alba Romania Occurrence Details
Hanes-Large prospect Alba Romania Occurrence Details
Muncaceasca East prospect Hunedoara Romania Occurrence Details
Muncaceasca West prospect Hunedoara Romania Occurrence Details
Trimpoiele prospect Alba Romania Occurrence Details
Almas Group Group Alba Romania Prospect Details
Rovina Valley Group Group Hunedoara Romania Prospect Details
Voia Group Group Hunedoara Romania Prospect Details