- Mineral Resources
- Online Spatial Data
- Global assessment of undiscovred copper resources
Colombia Paleocene–Eocene Acandi
Paleocene-Eocene mostly calc-alkaline plutons including tonalities, diorites, and granodiorites of the Mande batholith (Colombia), Acandi batholith (Colombia-Panama), Santiago batholith (Peru), and some outliers.
| Tract ID |
005pCu1001 |
| Country |
Colombia-Ecuador-Panama |
| Commodity |
Cu |
| Study area name |
Andes |
| Tectonic setting |
island arc |
| Deposit type |
porphyry copper |
| Grade-tonnage model |
General porphyry copper model (Singer and others, 2005) |
| Geologic age |
| Geologic feature age |
Paleocene through Eocene |
| Generalized age |
Tertiary-Paleogene |
| Oldest rocks age |
65.5Ma
|
| Youngest rocks age |
33.9Ma
|
| Age range |
31.6Ma
|
|
| Identified Cu resources |
10,000,000metric tons
|
| Known prospects |
2 |
| Mean Cu (t/sq km) |
639t/sq km
|
| Map scales used |
500K |
Results of the assessment
| Assessment date |
2005 |
| Estimators |
Carlos Mario Celada, Vladimir I. Berger, Joseph A Briskey, Charles G. Cunningham, Donald A. Singer, David M. Sutphin, Waldo Vivallo S., and Eduardo O. Zappettini |
| Assessment depth |
1km
|
| Quantitative assessment |
Yes |
Estimated number of deposits
| Number of deposits |
Confidence level |
| 3 |
90% |
| 8 |
50% |
| 19 |
10% |
| 19 |
5% |
| 19 |
1% |
|
| Mean estimated deposits |
9.6 |
±5.87 |
(0.61%) |
| Probability of mean |
0.36 |
| Probability of no copper |
0.03 |
Estimated deposit density
Known
deposits |
Total
deposits |
Area
(sq km) |
Deposit density
per 100,000 sq km |
| 2 |
11.6 |
51,610 |
22 |
Mean estimated tonnage
| Copper |
33,000,000 |
| Molybdenum |
810,000 |
| Gold |
790 |
| Silver |
11,000 |
| Ore |
6,400,000,000 |
Undiscovered copper resource
| Confidence level |
95% |
90% |
50% |
10% |
5% |
| Tonnage |
760,000 |
3,100,000 |
23,000,000 |
76,000,000 |
100,000,000 |
Economic analysis
| Fraser country |
Colombia |
| Fraser type |
0.47%
|
| Fraser high |
0.53%
|
| Typical cost |
0.36%
|
| High cost |
0.64%
|
| Infrastructure setting |
Mixed |
| Comments on depth |
30% cover; plutons & volcanics |
| Expected depth distribution |
|---|
| 0 - 250m |
0.25 |
| 250m - 500m |
0.25 |
| 500m - 1km |
0.5 |
| Economically recoverable resources |
|---|
| Copper |
18,000,000t
|
| Molybdenum |
320,000t
|
| Gold |
300t
|
| Silver |
5,700t
|
| Probability no econ recoverable |
0.14 |
| Econ NPV |
4,200x $1M
|
| Exp dollars |
73.03x $1M/100,000 sq km
|
| Exp value class |
High |
Bibliographic references
| General |
Cunningham and others (2008) |
| Economic |
Robinson and Menzie (2012) |
Cunningham, C.G., Zappettini, E.O., Vivallo S., Waldo, Celada, C.M., Quispe, Jorge, Singer, D.A., Briskey, J.A, Sutphin, D.M., Gajardo M., Mariano, Diaz, Alejandro, Portigliati, Carlos, Berger, V.I., Carrasco, Rodrigo, and Schulz, K.J., 2008, Quantitativemineral resource assessment of copper, molybdenum, gold, and silver in undiscovered porphyry copper deposits in the Andes Mountains of South America: U.S. Geological Survey Open-File Report 20081253, 282 p., http://pubs.usgs.gov/of/2008/1253/.Robinson, G.R., Jr., and Menzie, W.D., 2012, Economic filters for evaluating porphyry copper deposit resource assessments using grade-tonnage deposit models, with examples from the U.S. Geological Survey global mineral resource assessment (ver 1.2, March 2014): U.S. Geological Survey Scientific Investigations Report 20105090H, 21 p., http://pubs.usgs.gov/sir/2010/5090/h/.
Deposits and prospects associated with this tract
| Name |
Type |
State |
Country |
Development |
Details |
| Acandi |
prospect |
Chocó |
Colombia |
Prospect |
Details |
| Pegadorcito-Pantanos |
prospect |
Antioquia |
Colombia |
Occurrence |
Details |
| Murindo |
prospect |
Chocó |
Colombia |
Occurrence |
Details |
| Rio Pito |
prospect |
Darién |
Panama |
Occurrence |
Details |
