Lauren Edgar uses a hand lens to identify minerals in a sample from a complex esker.
![A scientist with a dark brown pony tail sits in the middle of rocks and gravel, peering at a rock using a hand lens.](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/media/images/Lauren_handlens.jpg?itok=xyQNlJD0)
Detailed Description
Lauren Edgar, a research geologist with the USGS Astrogeology Science Center, uses a hand lens to identify minerals in a sample from a complex esker in Iceland.
Sources/Usage
Public Domain.