One of these is Jupiter's moon — the rest are frying pans...So, which one?

[DhhD]

7. As a hypothesis, volcanic red clay salts, comes to mind.

http://www.thespicehouse.com/spices/hawaiian-black-and-red-sea-salt

https://en.wikipedia.org/wiki/Alaea_salt

http://www.ext.colostate.edu/mg/gardennotes/222.html



To myself I am only a child playing on the beach. I was like a boy playing on the seashore and diverting myself now and then finding a smoother pebble or a prettier shell than ordinary whilst the vast ocean of truth lay all undiscovered before me.
Isaac Newton
http://ecommons.luc.edu/cgi/viewcontent.cgi?article=1001&context=luc_theses_2yr

(Spell Checker is not responding-hope all words are spelled correctly.)