Posted: Nov 07, 2016 5:29 pm
What strikes me is the very fine grain size of less than half a millimeter, in comparison to some of the crystal sizes of over ten millimeters for the samples we took last week from the same area.
Lifeboat for the rational mind :D
http://www.rationalskepticism.org/
http://www.rationalskepticism.org/viewtopic.php?p=2490797#p2490797