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To: daifu

It’s flint, not limestone.


22 posted on 12/03/2021 4:03:47 PM PST by MeneMeneTekelUpharsin (Freedom is the freedom to discipline yourself so others don't have to do it for you.)
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To: MeneMeneTekelUpharsin

Flint (chert) occurs in limestone.


58 posted on 12/03/2021 5:24:54 PM PST by piasa (Attitude adjustments offered here free of charge)
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