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SEDIMENTARY ROCK<br />
Chert, Found In Nodules Of Limestone<br />
It probably formed from the remains of ancient sea sponges or other ocean animals that have been fossilized. Silica has replaced the tissue forming the sedimentary rock. Flint is a very dark form of chert.

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SEDIMENTARY ROCK
Chert, Found In Nodules Of Limestone
It probably formed from the remains of ancient sea sponges or other ocean animals that have been fossilized. Silica has replaced the tissue forming the sedimentary rock. Flint is a very dark form of chert.

Copyright:© 2004 Ben S. Kwiatkowski - Fundamental Photographs

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Ben Kwiatkowski