Fears for missing prospector

John Jimenez has not contacted family since March 27. Picture: Supplied

Police hold grave concerns for the welfare of a 53-year-old man who has not been seen since April 1.

It is believed John Jimenez, who was prospecting in the Laverton area, had promised to call a family member on Sunday, April 5 to let them know he was okay, but never made the call.

Mr Jimenez last made contact with his family on March 27 and was last seen in Leonora on April 1.

He was planning to travel to Laverton in a white Victoria registered Toyota Landcruiser.

Mr Jimenez is fair skinned, approximately 165cm tall, of medium build, with short black hair.

Anyone with information should call Police on 131 444 or Crime Stoppers on 1800 333 000.