1###Malakand Granite###30.60###2.67###Very coarse grained
5###Buffa Granite###10.99###1.65###Very Coarse grained
The coarse grained nature of the samples and relatively easy upgrading indicate that ore derived from these deposits will likely be very viable - depending on the cost of transport and providing infrastructure to site.
Three samples were tested - Sample A representing a coarse grained ore type, Sample B is a finer grained ore type - the precise ore split of these two types is currently being investigated.
Drilling has outlined a steeply dipping zone of mineralisation with
coarse grained chalcopyrite, associated with magnetite.
Granite exposed at Nagar Parkar is reddish pink, partly altered, leucocratic and medium to
coarse grained. The rock comprises K-feldspar (microperthite, microcline), plagioclase (minor), quartz, biotite, aegirine-augite, riebeckite, titanite, apatite, zircon, fluorite, epidote, calcite, sericite, kaolin and muscovite and limonite.
Among the three, the massive
coarse grained variety yields the highest strength values most probably because of (i) greater variation in its grain size, (ii) lower abundance and non-alignment of micaceous minerals, and (iii) lower values of water absorption and porosity.
The samples used for the preliminary testwork were taken from four discontinuous chip sampling traverses mostly taken across the strike of the outcropping
coarse grained, recrystallised Jubuk banded iron formation.