Re: Re: Rare and tough material
Re:
Re: Rare and tough material
-- TASART
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TASART
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08/29/2018, 13:56:09
the stone is absolutely not sedimentary, it is not porous and the fractures are concoidal as in chalcedony
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Re: Re: Re: Rare and tough material
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frank
(
2018-08-29 17:31
)
Chert and Flint and sedimentary formation
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Beadiste
(
2018-08-29 19:54
)
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Re: Rare and Tough
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Beadman
(
2018-09-04 13:08
)
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