Botswana Diamonds publishes first 3D model of Thorny River kimberlite
Diamond exploration company Botswana Diamonds has published a maiden three-dimensional (3D) model of a newly discovered kimberlite pipe at its Thorny River project in South Africa.
“This is our first three-dimensional model of the kimberlite on Thorny River and thus represents an important step in the commercialisation of the project.
"The discovery of a second anomaly to the east of pipe following this detailed analytical work could be an extension of the pipe and will be drilled in the New Year,” chairperson John Teeling comments.
The 3D model was drawn up following a high-resolution ground gravity survey conducted during October, which detected an enlarged anomaly along the known kimberlite fissure. The anomaly was subsequently followed up by reverse circulation (RC) drilling and confirmed as a kimberlite pipe.
Data from the RC holes was reconciled with the ground gravity data to build the 3D model of the kimberlite pipe. The best fit model showed an East – West trending body gently dipping to the east with a surface expression of 80 m x 40 m.
Botswana Diamonds will now drill core holes to further confine the geological boundaries and microdiamond sampling to determine a first pass diamond grade estimate of the body.
Petrographic studies will be used to confirm the kimberlite types.
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