Because @Beagle and I derailed multiple threads into rocks, with help from the chemist @NebulousMissy...
Here, ask me about rocks. Or life. Or cheese. Or hats. Maybe about bees, or flying, or any random thing. Beagle, please interject for your Dark Side knowledge (petroleum stuff is the Dark Side). I don't know diddlysquat about the Dark Side, except for some basic field geophysics for remote sensing. @NebulousMissy gets chemist-stuff.
Cool cool? Shall we let the randomness become random again?