Margaret Lake Commences Ground Geophysics on High Priority Targets
Margaret Lake Diamonds (MLD) is further testing 12 priority targets on its Margaret Lake property 300 kilometres northeast of Yellowknife, NWT, with ground gravity and electromagnetic surveys in conjunction with bathymetry. The goal is to upgrade the definition and ranking of the targets in preparation for drilling.
MLD selected the targets from more than 60 gravity anomalies identified by an airborne gravity gradiometry survey on the 100%-owned property. The company prioritized the original targets based on anomaly strength, shape, and structural setting. To rule out false kimberlite anomalies that the effect of water depth on the gradient signal can generate, a digital terrain model together with detailed bathymetry was applied to the gravity data.
The 23 remaining targets were modelled using Geosoft’s VOXI Earth Modelling, a cloud-based inversion service where a voxel (cell) representation of the earth is invoked with the goal of finding a 3D function that characterizes the physical property distribution.
The modelling process proved to be a useful filter by rejecting targets where it was impossible to generate depth-penetrating models using geologically realistic density contrasts. Through this interactive process, MLD selected 12 high priority targets, 11 of which are gravity derived and are within lakes. One target is based on magnetics alone.
MLD will use the additional geophysical data gathered by the ground survey to enhance target definition for the proposed next phase of exploration, a drill program.
Read the full news release on Stockhouse.