Coastal Pacific

An assemblage of Jurassic and Cretaceous postsubduction volcanic and intrusive rocks in eastern China and northern Vietnam
Tract ID 142pCu8704
Country China-Viet Nam
Commodity Cu
Study area name East Asia Mesozoic
Tectonic setting postconvergence
Deposit type porphyry copper
Grade-tonnage model General porphyry copper model (Singer and others, 2008)
Geologic age
Geologic feature age Jurassic and Cretaceous (Yanshanian)
Generalized age Mesozoic
Oldest rocks age 199.6Ma
Youngest rocks age 65.5Ma
Age range 134.1Ma
Identified Cu resources 14,500,000metric tons
Known prospects 12
Mean Cu (t/sq km) 108t/sq km
Map scales used 500K, 1M, 1.5M, 2.5M

Results of the assessment

Assessment date 2010
Estimators Jane M. Hammarstrom, Steve Ludington, Gilpin R. Robinson Jr.
Assessment depth 1km
Quantitative assessment Yes

Estimated number of deposits

Number of deposits Confidence level
2 90%
12 50%
40 10%
40 5%
40 1%
Mean estimated deposits 17.27 ±13.69 (0.79%)
Probability of mean 0.39
Probability of no copper 0.04

Estimated deposit density

Known
deposits
Total
deposits
Area
(sq km)
Deposit density
per 100,000 sq km
6 23.27 604,560 4

Mean estimated tonnage

Copper 65,000,000
Molybdenum 1,800,000
Gold 1,700
Silver 21,000
Ore 13,000

Undiscovered copper resource

Confidence level 95% 90% 50% 10% 5%
Tonnage 250,000 2,500,000 42,000,000 160,000,000 200,000,000

Economic analysis

Fraser country China* and Vietnam
Fraser type 0.52%
Fraser high 0.48%
Typical cost 0.52%
High cost 0.48%
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 38,000,000t
Molybdenum 790,000t
Gold 740t
Silver 11,000t
Probability no econ recoverable 0.05
Econ NPV 9,200x $1M
Exp dollars 14.29x $1M/100,000 sq km
Exp value class Low

Bibliographic references

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

Deposits and prospects associated with this tract

Name Type State Country Development Details
Guli prospect Jiangsu China Prospect Details
Bamaoshan prospect Anhui China Producer Details
Tongchankou deposit Hubei China Producer Details
Fengshandong deposit Hubei China Producer Details
Chengmenshan deposit Jiangxi China Producer Details
Dexing deposit Jiangxi China Producer Details
Yinshan deposit Jiangxi China Producer Details
Zijinshan deposit Fujian China Producer Details
Shangjiazhuang prospect Shandong China Prospect Details
Duijinshan prospect Shandong China Prospect Details
Anjishan prospect Jiangsu China Prospect Details
Taipingshan prospect Jiangsu China Prospect Details
Shaxi prospect Anhui China Prospect Details
Jingbian prospect Anhui China Prospect Details
Baiyunshan prospect Hubei China Prospect Details
Yongping prospect Jiangxi China Producer Details
Wangjiazhuang prospect Fujian China Prospect Details
Hongshan prospect Jiangxi China Prospect Details
Zhongteng prospect Fujian China Prospect Details
Yuanzhuding prospect Guangdong China Prospect Details
Qibaoshan prospect Shandong China Prospect Details
Dingjiashan prospect Jiangxi China Prospect Details
Heishanling prospect Zhejiang China Prospect Details
Zhongliao prospect Fujian China Prospect Details
Luoboling prospect Fujian China Prospect Details
Jinxi prospect Fujian China Prospect Details
Guifeng prospect Guangdong China Prospect Details