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Fact Sheet 2012–3130

Prepared under the auspices of the U.S. Department of State

Summary of the Reconnaissance Investigation of the Diamond Resource Potential and Production Capacity of Côte d’Ivoire

By Peter G. Chirico and Katherine C. Malpeli

Thumbnail of and link to report PDF (2.05 MB)Introduction

This study presents the results of a multiyear effort to monitor the diamond mining activities of Côte d’Ivoire’s two main diamond regions, Séguéla and Tortiya. The innovative approach developed for this study integrates archival reports and maps, high-resolution satellite imagery, and terrain modeling to assess the diamond resource potential and production capacity of the Séguéla and Tortiya deposits.

A geologic resource assessment was conducted to calculate the remaining diamond reserves for Séguéla and Tortiya using archival geologic data, including gravel grade and thickness recorded by the Ivorian mining company Société pour le Développement Minier (SODEMI). These data were combined with terrain analysis and geomorphological maps in a geological process-driven model. After accounting for previous production, a total of 10,100,000 carats are estimated to be remaining in Séguéla and a total of 1,100,000 carats are estimated to be remaining in Tortiya, based on currently known deposits.

First posted November 19, 2012

For additional information contact:
Peter G. Chirico
U.S. Geological Survey
MS 926A National Center
12201 Sunrise Valley Drive
Reston, VA 20192
Email: pchirico@usgs.gov

Or

Katherine C. Malpeli
U.S. Geological Survey
MS 926A National Center
12201 Sunrise Valley Drive
Reston, VA 20192
Email: kmalpeli

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Suggested citation:

Chirico, P.G., and Malpeli, K.C., 2012, Summary of the reconnaissance investigation of the diamond resource potential and production capacity of Côte d’Ivoire: U.S. Geological Survey Fact Sheet 2012–3130, 2 p. (Also available at http://pubs.usgs.gov/fs/2012/3130.)




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