the iron in California is bad, but seems to be just fine in Antarctica

[2cmorau]

http://www.foxnews.com/science/2015/04/29/source-antarctica-eerie-bleeding-glacier-found/

 

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[goldenIrishman]

Very cool! I wonder how well one of those sensors would work for prospecting. I've got a feeling that it would be well out of my price range.