Re: Metals/Inorganics in Plants


"Jo Schaper" <joschapern4ospam@xxxxxxxxxxxxxxxxx> skrev i en meddelelse
news:121dr729nmhqnfa@xxxxxxxxxxxxxxxxxxxxx
The use of the words chert vs flint in the States to describe
cryptocrystalline quartz is based on regional speech variation and state
of manufacture, not color, luster, or any objective standards.
Archeologists and those referring to human worked rock generally use flint
or flints.

Therefore, chert nodules can be worked into flint arrowheads.
Nobody said it had to make sense.
Jo

Hi Jo
My first link (the one I hadn't read) in my post was the one I found last
.... it turned out that it was the only relevant thing to the original
question. You should have a look at it .. it puts those fluffy silica
puff-balls into a context.

http://www2.warwick.ac.uk/fac/sci/bio/research/margenes/publications/lopezsilica03.pdf


Carsten



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