Agreed Agent , it is very important to separate the corporate issues from the geological potential of the tenement .
I am very dis-satisfied with the rate of progress and the lack of communication but I am very encouraged by geological meaning of the content of this update .
The key takeaway (s) are the geological parallels with the Kombat mineralisation .
I have taken the opportunity to highlight some key words contained in this document :
2012 TECHNICAL (NI43-101) REPORT ON THE KOMBAT PROJECT
7.4 Property Mineralization
A series of Cu-Pb orebodies have been mined on the Kombat property, localized along the axial
planes of one, or locally two, parasitic folds in the northern limb of the Otavi valley syncline, immediately
below the dolostone/phyllite contact (Figure 7). These parasitic folds, and the lines of orebodies, plunge
shallowly to the west, flattening out in the vicinity of the Asis Far West shaft. Lenses are steep in orientation,
transgressive to stratigraphy and, with depth, the massive sulphides horsetail and merge into stringer-type
and disseminated mineralization in calcitized zones of net-vein fracturing (Innes and Chaplin, 1986). The
mineralized zones, which reportedly exhibit higher Pb/Cu ratios at their tops and bottoms, are spatially
associated with the discordant sandstone bodies, which are locally mineralized. The sandstone bodies are
thought to be karst infills of cavern systems preferentially developed along fractures associated with the
parasitic folds. As such, they indicate loci of increased fluid flow during karsting; the same fracture systems
and the sandstone karst infill would be even more permeable for subsequent movement of hydrothermal
fluids at the time of mineralization.
Cu-Pb mineralization at Kombat occurs as
massive to feathery fracture-fillings and replacements
of dolostone, commonly associated with primary
(slumping and karst-related) and secondary
(hydrothermal) brecciation. At Kombat East, there is a
marked zonation vertically and horizontally, with a
bornite core successively surrounded by a bornite/chalcopyrite
assemblage, a chalcopyrite zone with or
without tennantite and sphalerite, a chalcopyritegalena-
pyrite zone and pyrite±galena zone (Changara,
2009). Zonation is less pronounced in other orebodies.
The local abundance of chalcocite is ascribed to
supergene enrichment (Hartmann, 1992). Individual
lenses are on the order of 10-50 x 50-100 metres
horizontally by 100-200 metres vertically.
Figure 8: Chalcopyrite replacing oolitic dolostone
Broad zones of calcitization flank sulphide lenses; at depth, these can form 200-300 metre widths of
sugary limestone. Calcitization is the dominant alteration associated with mineralization; calcite replaces
dolostone in envelopes around sulphide mineralization.
17
Steeply-dipping lenses of compositionally and
texturally layered Fe-Mn oxide-silicate mineralization
are generally found near feldspathic sandstone lenses
and are commonly associated with the peripheries of
the Cu-Pb orebodies. Surface exposures examined by
the author consist of lenses of massive to banded
specularite, magnetite and manganese oxides up to
several metres in thickness replacing dolostone. Fe
and Mn oxides extend along irregular fractures into the
dolostone from the lens margins. A sample taken by
the author of banded specularite-quartz mineralization
contained and 41.8% Fe and 0.772% MnO. Their link to
Cu-Pb mineralization is unknown but the Fe-Mn bodies
may reflect metal zonation in deposition from
hydrothermal fluids.
Figure 9: Fe-Mn lens replacing dolostone
A series of orebodies have been mined at the Kombat property, with essentially all mining carried out
from underground workings. From east to west, these are the Asis Ost, E900, Kombat East, Kombat Central,
Kombat West, Asis West and Asis Far West (Figures 6 and 7). The Asis Ost, E900, Kombat East, Kombat
Central and Kombat West orebodies reach surface and were the first to be mined. Asis Ost is considered to
be mined out, while the others are reported to have remnants of ore-grade mineralization. The
dolostone/phyllite contact and the mineralized zones are down-dropped to the west of the major
northeasterly-trending Kombat West Fault, so the Asis West and Asis Far West zones are blind to surface.
Mining was underway in the Asis West orebody at the time of its most recent flooding in 2007. Only limited
drilling, underground development and ore extraction have been done on the Asis Far West zone.
Very promising imo, hopefully they will get on with it !
GLTA
Q
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