Annual Report 2010 Annual Report 2010

Far West

Kalgold

Geology

The Kalgold operation is located within the Kraaipan Greenstone Belt, 60 kilometres south of Mafikeng. This belt is part of the larger Amalia- Kraaipan Greenstone terrain, consisting of north trending linear belts of Archaean meta-volcanic and metasedimentary rocks, separated by granitoid units. Mineralisation occurs in shallow dipping quartz veins, which occur in clusters or swarms, within the steeply dipping magnetitechert banded iron formation. Disseminated sulphide mineralisation, dominated mostly by pyrite, occurs around and between the shallow dipping quartz vein swarms. The D Zone, the largest orebody encountered here, has been extensively mined within a single open-pit operation, along a strike length of 1 300 metres. Mineralisation has also been found in the Mielie Field Zone (adjacent to the D Zone), the A Zone and A Zone West (along strike to the north of the D Zone), and the Watertank and Windmill areas to the north of the A Zone.

Gold – Mineral resources

 MeasuredIndicatedInferredTotal
OperationsTonnes
(Mt)
g/tGold
(000 kg)
Gold
(000 oz)
Tonnes
(Mt)
g/tGold
(000 kg)
Gold
(000 oz)
Tonnes
(Mt)
g/tGold
(000 kg)
Gold
(000 oz)
Tonnes
(Mt)
g/tGold
(000 kg)
Gold
(000 oz)
Underground
Kalgold34.00.862994463.80.94601 92227.20.9325818125.00.921153 684
Grand total 34.00.8629944 63.80.94601 922 27.20.9325818 125.00.921153 684
Kalgold

Modifying factors

OperationsMCF
(%)
Dilution
(%)
PRF
(%)
Kalgold100285
  • MCF = Mine call factor
  • PRF = Plant recovery factor

Gold – Mineral reserves

 ProvedProbableTotal
OperationsTonnes
(Mt)
g/tGold
(000 kg)
Gold
(000 oz)
Tonnes
(Mt)
g/tGold
(000 kg)
Gold
(000 oz)
Tonnes
(Mt)
g/tGold
(000 kg)
Gold
(000 oz)
Kalgold21.90.82185757.51.07825829.40.8826833
Grand total21.9 0.82185757.5 1.07825829.4 0.8826833

Kalgold operations

Kimberley reef

Kalgold operations

HARMONY ANNUAL REPORT 2010