National Geochemical Sample Archive
By Geology, Geophysics, and Geochemistry Science Center
June 2016 (approx.)
![sample storage](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/thumbnails/image/NGSA-panorama.png?itok=kb5TsoT9)
Detailed Description
USGS National Geochemical Sample Archive in Denver, Colorado.
Sources/Usage
Public Domain.