Central Volcanic Region
Glass Earth commenced work in the CVR and Mamaku areas of the North Island in 2005 with two airborne geophysical surveys (gravity & magnetics) over a large portion of the region. Interrogation of this data led to detailed geochemical sampling, ground geophysical surveys, and surface mapping of a number of anomalous zones. Scout drilling (diamond drilling) commenced in 2006 over 5 prospects, and returned some encouraging results.
In order to further define drill targets, Glass Earth implemented E-SCAN(r), a new generation multi-directional DC resistivity method that highlights resistive/conductive contrasts (quartz versus altered rock) in 3D down to approximately 650m depth. These surveys were carried out over the whole target zones, and are providing 3D information of the subsurface systems that could host gold mineralisation.
In the Mamaku Region, Glass Earth has identified, through its geophysical surveys, the extension of the Coromandel Volcanic Arc; host to the Martha Gold Mine operated by Newmont at Waihi. Glass Earth is currently focusing on resource definition drilling on the Muirs and Massey Reef extensions.