How does electrophoretic separation work in terms of separating soil into minerals?
The search term: "continuous particle electrophoresis" yielded much more results.


electrophoresis - the movement of charged particles in a fluid or gel under the 
influence of an electric field.



source: http://www.youtube.com/watch?v=LNUgcq1M4LI

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source: http://www.nature.com/articles/srep19911/figures/1

Heard some guy invented it while messing with some clay, but couldint find any video examples of that.