Kolyma

Late Jurassic to Early Cretaceous volcanic and intrusive rocks composing island-arc, continental margin arc, and collisional magmatic belts associated with the Kolyma-Omolon microcontinent.
Tract ID 142pCu8512
Country Russian Federation
Commodity Cu
Study area name Northeast Asia
Tectonic setting mixed
Deposit type porphyry copper
Grade-tonnage model General porphyry copper model (Singer and others, 2008)
Geologic age
Geologic feature age Jurassic through Cretaceous
Generalized age Mesozoic
Oldest rocks age 199.6Ma
Youngest rocks age 65.5Ma
Age range 134.1Ma
Identified Cu resources 7,900,000metric tons
Known prospects 5
Mean Cu (t/sq km) 101t/sq km
Map scales used 1M

Results of the assessment

Assessment date 2010
Estimators Alexeiev, D. (Russian Academy of Sciences); Bookstrom, Arthur A.(USGS); Frost, Thomas P. (USGS); Hammarstrom, Jane M. (USGS); Light, Thomas D. (USGS); Ludington, Steve (USGS); Mihalasky, Mark, J. (USGS); Panteleyev, Andre (XDM Geological Consultants)
Assessment depth 1km
Quantitative assessment Yes

Estimated number of deposits

Number of deposits Confidence level
2 90%
8 50%
36 10%
36 5%
36 1%
Mean estimated deposits 14.47 ±12.55 (0.87%)
Probability of mean 0.37
Probability of no copper 0.04

Estimated deposit density

Known
deposits
Total
deposits
Area
(sq km)
Deposit density
per 100,000 sq km
1 15.47 555,280 3

Mean estimated tonnage

Copper 56,000,000
Molybdenum 1,500,000
Gold 1,400
Silver 18,000
Ore 11,000

Undiscovered copper resource

Confidence level 95% 90% 50% 10% 5%
Tonnage 220,000 2,000,000 30,000,000 140,000,000 190,000,000

Economic analysis

Fraser country Russian Federation
Fraser type 0.12%
Fraser high 0.88%
Typical cost 0%
High cost 1%
Infrastructure setting High cost
Comments on depth mixed
Expected depth distribution
0 - 250m 0.3
250m - 500m 0.25
500m - 1km 0.45
Economically recoverable resources
Copper 28,000,000t
Molybdenum 590,000t
Gold 500t
Silver 8,700t
Probability no econ recoverable 0.14
Econ NPV 5,100x $1M
Exp dollars 8.02x $1M/100,000 sq km
Exp value class Low

Bibliographic references

General Mihalasky, Ludington, Alexeiev, and others (2015)
Economic Robinson and Menzie (2012)

Deposits and prospects associated with this tract

Name Type State Country Development Details
Medgorskoe prospect Magadanskaya oblast' Russian Federation Unknown Details
Asket prospect Chukotskiy avtonomnyy okrug Russian Federation Unknown Details
Nakhodka prospect Chukotskiy avtonomnyy okrug Russian Federation Unknown Details
Peschanka deposit Chukotskiy avtonomnyy okrug Russian Federation Prospect Details
Rzhavy prospect Chukotskiy avtonomnyy okrug Russian Federation Unknown Details
Verny prospect Chukotskiy avtonomnyy okrug Russian Federation Unknown Details