Thread: Beach pebbles/rocks
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Old 03-10-2016, 11:42 PM
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Coasting Coasting is offline
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Elementary school science!!!!
Drip some vinegar on it, does it fizz?


http://www.minsocam.org/msa/collecto...d/rock_key.htm

Most of the rocks we find around here in riverbeds are a pretty safe bet
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