Argentina Miocene–Pliocene Nevados de Famatina

Mainly late Miocene to early Pliocene calc-alkalic plutons and consanguineous coeval to slightly older lavas, breccias, pyroclastic rocks, and volcanic domes.
Tract ID 005pCu1014d
Country Argentina
Commodity Cu
Study area name Andes
Tectonic setting continental margin
Deposit type porphyry copper
Grade-tonnage model General porphyry copper model (Singer and others, 2005)
Geologic age
Geologic feature age late Miocene through early Pliocene
Generalized age Tertiary-Neogene
Oldest rocks age 11.2Ma
Youngest rocks age 3.6Ma
Age range 7.6Ma
Identified Cu resources 1,100,000metric tons
Mean Cu (t/sq km) 2080t/sq km
Map scales used 1M

Results of the assessment

Assessment date 2005
Estimators Charles G. Cunningham, Klaus J. Schulz, Joseph A Briskey, and Eduardo O. Zappettini
Assessment depth 1km
Quantitative assessment Yes

Estimated number of deposits

Number of deposits Confidence level
1 90%
3 50%
7 10%
7 5%
7 1%
Mean estimated deposits 3.53 ±2.26 (0.64%)
Probability of mean 0.3
Probability of no copper 0.07

Estimated deposit density

(sq km)
Deposit density
per 100,000 sq km
1 4.53 5,770 79

Mean estimated tonnage

Copper 12,000,000
Molybdenum 320,000
Gold 290
Silver 4,100
Ore 2,400,000,000

Undiscovered copper resource

Confidence level 90% 50% 10% 5%
Tonnage 280,000 6,100,000 29,000,000 44,000,000

Economic analysis

Fraser country Argentina (La Rioja, Catamarca*)
Fraser type 0.46%
Fraser high 0.54%
Typical cost 0.33%
High cost 0.67%
Infrastructure setting Mixed
Comments on depth 70% cover; skew deep
Expected depth distribution
0 - 250m 0.2
250m - 500m 0.3
500m - 1km 0.5
Economically recoverable resources
Copper 6,300,000t
Molybdenum 120,000t
Gold 110t
Silver 2,100t
Probability no econ recoverable 0.52
Econ NPV 1,500x $1M
Exp dollars 171.1x $1M/100,000 sq km
Exp value class High

Bibliographic references

General Cunningham and others (2008)
Economic Robinson and Menzie (2012)

Deposits and prospects associated with this tract

Name Type State Country Development Details
Nevados de Famatina deposit La Rioja Argentina Prospect Details