Spiral Density Separator
By Geology, Geophysics, and Geochemistry Science Center
November 2012 (approx.)
![spiral density separator](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/thumbnails/image/DSCN1329_spiral.jpg?itok=wdXePfiA)
Detailed Description
Spiral density separator in a placer deposit processing plant.
Sources/Usage
Public Domain.