Sunshine Metals (ASX:SHN) started a helicopter-borne magnetic and radiometric survey at its Sybil project in Queensland, according to a Tuesday filing with the Australian bourse.

The survey will cover priority prospect areas, including Francis Creek, Francis Creek East, Blue Range, and Quartz Ridge, the filing said.

The survey will aid in defining the project's stratigraphic and structural architecture and forms part of the company's broader exploration and development activities across the Ravenswood Consolidated Project, per the filing.

Shares fell past 3% in midday trade Tuesday.