40 / 60
38
MODERN MINING
July 2016
COUNTRY FOCUS
BOTSWANA
feature
T3 strike length extended by another 200 m
As this article was being prepared for publication, MOD Resources released
further drill results from T3 which extend the resource area another 200 m
east to a total 1 km strike length.
One of the holes – MO-G-16D – produced a record Cu assay of 0,8 m at
45,4 % Cu and 119 g/t Ag within an intersection of 27,5 m at 3,2 % Cu and
13 g/t Ag from 134,0 m downhole. MO-G-16D includes other high-grade
assays between 4,9 % up to 8,8 % Cu.
If an arbitrary cut of 15 % Cu is applied to this intersection, says MOD, it
becomes 27,5 m at 2,3 % Cu and 13 g/t Ag which still compares very favour-
ably with other global copper deposits.
Above:
Seen on site at
T3 are from left: Steve
McGhee (a director of MOD
Resources); Terry Grammer
of Metal Tiger; Jacques
Janse van Rensburg; and
Julian Hanna.
Right:
MOD hosted a visit to
its properties in Botswana
just after the recent
Botswana Resource Sector
Conference. The tour party is
seen here at T3.
levels and conventional mining (using air-legs)
for in-ore development and stoping.
Using a 1,35 % Cu cut-off grade, average
stope width is 2,5 m including dilution. Mining
costs including decline, waste development
and stoping (and excluding administration and
utilities costs and mining equipment) are esti-
mated to be in the range of US$45 per tonne
of ore.
The question of how to further advance
Mahumo is now dependent on the results of
Stage 2 drilling at the site – to test for exten-
sions of the orebody to around 600 m depth
– and on how the T3 discovery progresses.
Mahumo and T3 are both part of a major plus
20 km wide structural zone known as the
Mahumo Structural Corridor and – given their
proximity to each other – clearly have the
potential to be developed jointly.
Updating delegates to the BRSC on T3,
Hanna said that drilling of the target had started
in March this year and had achieved almost
immediate success with 52 m at 2,0 % Cu
(including 7 m at 4,2 % Cu and 93,66 g/t Ag)
having been intersected in the third shal-
low RC drill hole. Since then three diamond
rigs have been deployed to drill out an initial
Phase 1 resource along an 800 m strike length
to approximately 200 m depth.
The Cu mineralisation – comprising vein-
hosted and disseminated chalcopyrite, bornite
and chalcocite – occurs within a 50 to 60 m
wide sequence of shallow-dipping green silt-
stones and marl units known as the ‘target
sequence’. There is no outcrop at T3 which
is interpreted from magnetic data to form part
of a 25 km long ‘structural’ dome within the
Mahumo Corridor.
Hanna noted that with three diamond rigs on
site (a fourth has been added since the confer-
ence), MOD was generating up to 200 m of core
per day and that a priority was to improve core
processing and assay turnaround.
In its latest ASX release on T3 (dated
22 June), MOD has reported that 21 diamond
drill holes have either been completed or are
in progress within the Phase1 resource area.
All holes completed to date have intersected
significant copper mineralisation within the
target sequence. A further 13 holes are planned
to establish the initial resource estimate.