197
boundary model for resource estimation without a reliance on manual digitisation. Stratigraphic relationships defined in Leapfrog allow the stratigraphic and mineralised units to be
exported as 3D volumes, used to code and constrain the block model in Datamine.
3.3 Three dimensional modelling
With the creation of high quality surfaces for stratigraphic and mineralised units, it is possible
to use this information to constrain a full 3D block model and estimation. A block size of 50 m
Figure 4. Structural discs used control the modelling of the mineralized horizon at the Kakula deposit.
Figure 5. Comparison of the Datamine trend surface modelling and the improved surface creation
utilizing structural discs in Leapfrog. Note the 10x vertical exaggeration to highlight differences.
N
1250
1200
Structural disc
.
Dip direction
Angle of disc
defines the dip
I
00374
00614
Kamoa Copper Deposit
Comparison of modelling techniques for
mineralised horizon
1 Ox vertical exaggeration
J
00
00
0
"' 0 0 0
~
00636
Kakula Deposit
isometric view
looking SE
I
s
~
Modelled using
structural discs
Trend su rface