Sierra Madre Arc (southern segment)

Eocene-Oligocene Sierra Madre Arc
Tract ID 142pCu7304b
Country Philippines
Commodity Cu
Study area name East and Southeast Asia
Tectonic setting island arc
Deposit type porphyry copper
Grade-tonnage model General porphyry copper model (Singer and others, 2008)
Geologic age
Geologic feature age Late Cretaceous through Early Miocene
Generalized age Tertiary-Paleogene
Oldest rocks age 99.6Ma
Youngest rocks age 20Ma
Age range 79.6Ma
Map scales used 1M

Results of the assessment

Assessment date 2010
Estimators Jane M. Hammarstrom, Gilpin R. Robinson, Jr., Steve Ludington, Arthur A. Bookstrom, and Michael L. Zientek
Assessment depth 1km
Quantitative assessment Yes

Estimated number of deposits

Number of deposits Confidence level
Mean estimated deposits 0 ±0 (0%)
Probability of mean 0
Probability of no copper 0

Estimated deposit density

(sq km)
Deposit density
per 100,000 sq km
0 NaN

Mean estimated tonnage

Undiscovered copper resource

Confidence level

Economic analysis

Fraser country Philippines
Fraser type 0.11%
Fraser high 0.88%
Typical cost 0%
High cost 1%
Infrastructure setting High cost
Comments on depth default
Expected depth distribution
0 - 250m 0.25
250m - 500m 0.25
500m - 1km 0.5
Probability no econ recoverable 0
Exp dollars 0x $1M/100,000 sq km
Exp value class Very Low

Bibliographic references

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

Deposits and prospects associated with this tract

Name Type State Country Development Details
Lumbay deposit Rizal Philippines Prospect Details
Gapan prospect Nueva Ecija Philippines Occurrence Details
Villarosa prospect Bulacan Philippines Occurrence Details
Canicanian prospect Quezon Philippines Prospect Details