Tuesday, October 21, 2014

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  • The Gabonese government tranfers its holdings in COMILOG to the SEM
  • View pictures of the GMFA Press Conference 27 June 2014 - Libreville ...Click here!!
  • View pictures of the GMFA Press Conference 27 June 2014 - Libreville ...Click here!!
  • View pictures of SEM at the NYFA 2014, Libreville 23-25 May...Click here!!
  • The SEM organizes a business plans contest... Click here to view pictures

GABON, SEM & MINING NEWS

  1. Manganese
  2. Gold
  3. Iron Ore
  4. Zinc
  5. Nickel
  6. Bauxite
  7. Diamond
  8. Lead
  9. Phosphorus
  10. Group Elements

Gabon is currently the world’s third producer of manganese behind South Africa and Australia. 95% of the Gabonese production is for the steel industry. Deposits are mostly located in the south-east of the country in the Francevillian basin of Proterozoic age. 

The exploitation of the mine in Moanda, south-east of the country, provides with nearly 25% of the world’s production. The deposit, exploited by Eramet’s Comilog, contains reserves estimated at more than 15million tonwith an average grade around 44%. The Complexe Métallurgique de Moanda, a modern metallurgical complex is currently being built there and will start producing by end of 2014...

More than 350 occurrences were discovered throughout Gabon, mostly in Archean terrains. The mining of placers has been carried out from the 1930s to date mainly with artisanal methods. 

Primary goldthe  main  deposit  is  that  of  Bakoudou,  located  south-east  of  Gabon  and  exploited  by Morocco’s Managem. Production started in 2012 with a first 20,500-ounce output. Reserves are estimated at 280,000 ounces with a high potential for growth in the Etéké district, ongoing exploratory works allow to expect 700,000 ounces of gold.
Alluvial gold: the main deposits are those of Minkébé, Etéké, Ndangui, Mayibouth and Ndjolé. SEM, via Comptoir Gabonais de Collecte de l’Or, restructured the industry that consists of artisanal operations...

Gabon’s iron reserves are currently estimated at more than 2 billion tons, in view of the ore grading more than 38%. The main existing ore bodies/deposits are:

Bélinga ansurrounding districts: located in the north-east of the country, they contain 1 billion tons of ore grading more than 60% with potential DSO which amounts to a few hundred million tons.
Milingui deposit: located in the south-west, it indicated 126 million tons of resources so far
LobLobdeposit: located in the central south-east of Gabon, it contains roughly 168 million tons of resources. The average grade is about 41% Fe.
Mounts Mbilan: they are located in the north-west of Gabon and contain roughly 200 million tons of resources with a grade of 38 to 45% Fe...

Pb-Zn deposit in Kroussou: located west of the country with reserves estimated in late 1970 up to 15,000 tons of mineable lead-zinc. In Kroussou, the stratiform mineralisation is a disseminated and red bed-type one. It is distributed along the contact with the cretaceous base and rectilinear north-southwards. The mineral assemblage includes: galena, pyrite, blended, barytine among other elements...

The prospection of nickel sulphide and PGM in Gabon became more intense with the works conducted by Southern Era and Lonmin in 2005-2007. The indications discovered in Gabon seem to have great similarities with those of the Bushveld Complex in South Africa. 

The mafic to ultramafic rocks (gabbro, norites and orthopyroxenites) of the igneous sequence in Kinguélé coincide with the environment most favourable to the occurrence of the Ni-Cu sulphide and PGM mineralisation recorded in Gabon...

Barytine deposit in Dourekiki: located in the south of Kroussou, the deposit is said to be alluvial. The resources estimated between the 1960s and the 1980s are of 1.2 million ton at 46% BaSO4. The ore is made of massive banded barytine in the form of vugs forming residual blocks resulting from a primary mineralisation during lower cretaceous. The ore also occurs in form of chemically-reworked secondary barytine... 

  

The exploration of diamonds experienced a peak between 1998 and 2003.  De Beers and SouthernEra especially, enabled to discover several kimberlites in five districts of which Makongonio-Mbigou and Mitzic are the major ones. Potential alluvial diamonds mostly made of precious stones is estimated at 160,000 carats...

Pb-Zn deposit in Kroussou: located west of the country with reserves estimated in late 1970 up to 15,000 tons of mineable lead-zinc. In Kroussou, the stratiform mineralisation is a disseminated and red bed-type one. It is distributed along the contact with the cretaceous base and rectilinear north-southwards. The mineral assemblage includes: galena, pyrite, blended, barytine among other elements...

The phosphates existing in Gabon

Magmatogenic, associated with Mabounié’s carbonatite alkaline complex, which contains phosphates and niobium in connectivity. Phosphates resources are around 140 million tons at 24% P2O5 and metal niobium resources are estimated at 3 million tons of an ore with an average grade of 1.3% Nb2O5. The project for the mining of the deposit is operated by the French mining group, Eramet. This is a world-class deposit. The Ngoutou’s alkaline complex, which is located east of the country, has features similar to those of the Mabounié’s complex

The prospection of nickel sulphide and PGM in Gabon became more intense with the works conducted by SouthernEra and Lonmin in 2005-2007. The indications discovered in Gabon seem to have great similarities with those of the Bushveld Complex in South Africa. 

The mafic to ultramafic rocks (gabbro, norites and orthopyroxenites) of the igneous sequence in Kinguélé coincide with the environment most favourable to the occurrence of the Ni-Cu sulphide and PGM mineralisation recorded in Gabon...

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