Young woman Crystal Johnston found safe on a Kookynie station after going missing for a week

A 24-year-old woman missing in the northern Goldfields for a week has been found safe on a station at Kookynie.

Police started searching for Crystal Johnston last Saturday after she vanished about 6.10pm on Friday in the Jeedamya area about 40km north of Menzies.

Leonora police said Ms Johnston had become separated from the car she was a passenger in after it stopped on Goldfields Highway, and she had no access to food, water or a mobile phone.

A co-ordinated multi-agency land search and rescue operation was launched on Saturday, with officers from Leonora police station supported by Laverton police.

Due to the remote location and challenging terrain, an Australian Maritime Safety Authority Challenger rescue jet was deployed from Perth to help with the search.

The search resumed on Monday, with additional resources deployed from Kalgoorlie-Boulder, including a police drone and a police observer onboard an aircraft.

Police on Friday said Ms Johnston had been taken to hospital for a check-up.