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opal-CT |
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opal-CT [′ō·pəl ′sē′tē]
(petrology) A poorly ordered crystalline form of silica thought to be the intermediate phase in quartz chert formation. Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content. |
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