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Can anyone tell me what the composition of the agate crust is made of?

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asked Jan 27, 2018 by arbayowling (590 points)

1 Answer

0 votes
Rhyolite, most probably.
answered Jan 28, 2018 by Weasel (58,930 points)
Hi Weasel, thank you for this explanation. But what about the other elements in the crust matrix, are these derivative of Rhyolite? I will post another picture showing the bottom half of the agate. Is this just plain silica? Thanks, arbayowling
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