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CENTAMIN KONKERA DEPOSIT (3.254Moz)

19 June 2014

KONKERA DEPOSIT

Project Location and Access

Konkera deposit is located in Batie West license in the South-West corner of Burkina Faso. The Project is located approximately 450 km from Ouagadougou the capital city of Burkina Faso and adjacent to the country boundaries of Cote d’Ivoire and Ghana.

The region is accessed from Ouagadougou by paved road to Gaoua at the top of the permits and further gravel road to the site via Kampti town.

Project History

  • Year 1940’s: French War Effort lead to artisanal mining in the region.
  •  Year 1990’s: SYSMIN explore the region for Base Metals
  • 2007 Artisinal Miners worked intensively on the project area.
  •  The Batie West tenements were acquired in July 2008 by Ampella mining.
  •  Konkera is a new discovery made by Ampella exploration team. Drilling has been conducted in several campaigns by Ampella from 2008.
  •  January 2010 Ampella Mining has announced an initial inferred resource estimate of 1.2 Moz for its Konkera Prospect less than 18 months after acquiring this virgin project.
  •  Nov 2011: Ampella increased Konkera Resource 3.1Moz Au and subsequently start the  Pre-feasibility studies.
  •  5th March 2013: a new Resource Upgrade was released which increased the Konkera Resources to 3.25 Moz.

Project Geology

The Konkera deposit is located within altered Lower Proterozoic Birimian at the southwest margin of the Boromo Greenstone Belt. The main structure is a 110km long gold-bearing shear zone affecting metavolcanics and metasediments which contain numerous porphyritic dykes.

Mineralization is hosted by the shear zone. The strike length of the resource is approximately 4.9km with multiple stacked parallel zones especially at the south of the deposit.
Local geology is characterized by strongly sheared and folded mafic volcanoclastic with intercalated volcanic basalt affected by Chorite-Sericite-Carbonate alteration to the footwall. The contact with the orezone area is a thrusting structure. Orebody is in sheared sericite-albite-carbonate-pyrite altered volcanoclastic sediments with associated gold bearing quartz veining.
Geological model inferred a fertile porphyry Intrusion at depth that is the source of the mineralizing fluid.

 

 

 

 

 

DEPOSIT TYPES

Konkera is an orogenic lode gold deposit corresponding to porphyry related mineralized Shear Zone with Multiple stacked lodes. The deposit presents strong hydrothermal alteration and strong structural control.

MINERALIZATION

At the Konkera Prospect gold mineralisation extends over 4.9 kilometres and remains open at depth and along strike. Mineralization is hosted in a shear zone containing altered rocks dominated by sericite-carbonate-albite-pyrite mineralogy. It consists in multiple stacked lodes and it is related to a fertile porphyry intrusion.

Five interconnected prospects make up the resource area: Konkera East, Konkera Main, Konkera North, The Gap and Kouglaga.

In Konkera Main prospect significant sericite and carbonate-rich deformation zones are hosting gold-rich sulphide mineralization.

At Konkera East, three parallel deformation zones have been identified. They correspond to gold-bearing sericite-carbonate-pyrite mineralization similar to Konkera Main.

Kouglaga prospect to the north-east of Konkera revealed similar width of mineralization seen at Konkera, but higher grade overall.

Mineral Resources 

The revised JORC-compliant Resource incorporated the five contiguous prospects of Konkera East, Konkera Main, Konkera North, The Gap and Kouglaga.

This latest upgrade released on March 05, 2013 comes from an infill drilling campaign completed during 2012 at Konkera for pre-feasibility studies (PFS).

The global resource now stands at 59.2 million tonnes at 1.7g/t gold for 3,253,000 ounces of gold

(source company web site / press releases).

KONKERA DEPOSIT GOLD RESOURCES

Category

Tonnes*

Grade (g/t Au)*

Ounces

Cut-grade (g/t Au)

Indicated

34,196,772

1.8

1,918,598

0.5

Inferred

24,977,794

1.7

1,334,865

0.5

Total

59,174,564

1.7

3,253,525

0.5

NB: Most of the figures are modified from company public data

www.centamin.com

One Response to “CENTAMIN KONKERA DEPOSIT (3.254Moz)”

19 June 2014
19 June 2014

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