The 1,100-point gravity survey is being done on a 100-metre by 50-metre grid over the prospect where a reverse circulation (RC) drilling program in 2018 identified high-grade gold mineralisation up to 6.69 g/t.
Refining geological model
Data from the survey will be used in refining the detailed geological model of the area and the updated model will assist in finalising planning for the next phase of drilling
The survey will cover a substantial coincident antimony, arsenic and selenium anomaly to the east of the RC drilling program.
This work will also cover two anomalies identified in the 2018 variable time-domain electromagnetic (VTEM) survey.
Progress toward drilling
Managing director Neil Marston said: “This gravity survey will provide the company with another high-resolution geophysical dataset and information as we progress towards the next phase of drilling at the Windalah prospect as well as other areas in the Bryah Basin.
“Follow-up gravity surveys of other prospective areas are likely to follow later once we assess the effectiveness of this initial survey.”
The presence of the Windalah antimony anomaly, along with other pathfinder anomalism in arsenic and selenium, provides substantial evidence of the presence of an alteration cell, which may be proximal to a high-value ore body.