Sebembere (KeniebaGoldfields) - Zambian Copperbelt (sitios de interés)

RESOURCE BASE - HISTORIC

14.2Mt at 1.7% Cu (Rio Tinto)

5.7Mt at 1.70% Cu (recalculation by Freeman)

16.3Mt at 1.61% Cu (Geomin Romania 1974)

 

 

 8. MINERALIZATION

Mineralisation in the southern limb of the Sebembere syncline is restricted to feldspathic quartzite aswell as shale and dolomite horizons. In the northern limb, the feldspathic quartzite is absent and limited mineralisation is present within an andesitic lava (on the same stratigraphic positions as the quartzite within the southern limb). The mineralised zone within the central zone (cf. Section 6.2.3.1) extends from < 30 m to > 100 m. According to Watts et al. (1991) the mineralization package isdivided into three vertical zones.

 

Zone 1 is located within the feldspar – quartzite horizon and supposed to be 1,100 m long at it upper levels with thickness of mineralization ranging from 0.85 m to 7.88 m and the Cu content varies from 0.91 % to 3.39 % (Catana, 1974).

Zone 1 is also located within the feldspar – quartzite horizon and supposed to be 1,300 m long at it upper levels with thickness of mineralization ranging from 1.23 m to 13.23 m and the Cu content varies from 0.91 % to 2.33 %.

Limited information is available for zone three, but Catana (1974) states the mineralization in zone 3 to be 2.6 m in thickness and Cu content 1.56 %.