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bertrandite |
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bertrandite [′bər·trən‚dīt]
(mineralogy) Be4Si2O7(OH)2A colorless or pale-yellow mineral consisting of a beryllium silicate occurring in prismatic crystals; hardness is 6-7 on Mohs scale, and specific gravity is 2.59-2.60. 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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