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The Catoca diamond mine is the fourth largest diamond mine in the world, and is located in Angola. The mine is owned by a consortium of international mining interests, including Endiama (the state mining company of Angola) (32.8% ownership), Alrosa of Russia (32.8%), Odebrecht of Brazil (16.4%), and the Diamond Finance CY BV Group (16.8%). The mine is located on a kimberlite pipe.
 | This article needs to be updated. (September 2019) |
 Satellite image of the mine from June 21, 2001. The light-red point in the north-east of the mine is a bush fire. | |
| Location | |
|---|---|
  Catoca diamond mine Location in Angola | |
| Country | Angola |
| Coordinates | 09°23′56″S 020°18′03″E |
| Production | |
| Products | Diamonds (2.6 million carats in 2001) |
| Owner | |
| Company | Alrosa (32.8%) Endiama (32.8%) Odebrecht (16.4%) Diamond Finance CY BV Group (16.8%) |
Production
The mine had production of 1,800,000 carats (360 kg) in 2000 and 2,600,000 carats (520 kg) in 2001. The mine's production is 35% gem quality, compared to a global average of 20%; the diamonds produced at Catoca have an average value of US$75–$100 per carat ($375–500/g). Estimated reserves are 60 million carats (12 tonnes).
The diamonds from Catoca Mining Society topped the sales of 2009, with a net profit of US$70 million, resulting from a gross production of US$122.6 million, Angop. The information is contained in an annual report from the company released in September 2011. According to the source, the sales reached 7,050,521 carats (1,410.1042 kg), at the average rate of US$62.23, a volume that represented about 78 percent of the amount sold by the diamond companies around the country. The note states that as a result of the processing of the ore, the company obtained a total of 7.5 million carats that permitted it to establish the operational cost.
In 2012 the mine extracted 6,500,000 carats (1,300 kg) out of 10 million tonnes of ore production.[1]
Geology
The Catoca diamond deposit occurs in a kimberlite pipe.[2]
References
- McClelland, Colin (16 July 2013). "Angola's Catoca Diamond Complex to Add Mill as Miners Dig Deeper". Bloomberg.com. Bloomberg. Retrieved 2014-05-20.
- Pervov, V. A., Somov, S. V., Korshunov, A. V., Dulapchii, E. V., & Félix, J. T. (2011). The Catoca kimberlite pipe, Republic of Angola: A paleovolcanological model. Geology of Ore Deposits, 53(4), 295-308.
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