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biopyribole |
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biopyribole [‚bī·ō′pir·ə‚bōl] (mineralogy) A collective term for the rock-forming minerals pyroxene, amphibole, and mica. A chemically diverse but structurally related group of minerals that constitute substantial fractions of both the earth's crust and upper mantle; they exhibit single-chain, double-chain, triple-chain, and sheet silicate structures. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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