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beidellite

noun bei·del·lite \ bī-ˈde-ˌlīt \
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Definition of beidellite

plural -s
: a mineral ideally Ca0.16Al3Si3.17O10(OH)2 that is a common constituent of certain clays and consists of basic aluminosilicate with exchangeable calcium, sodium, or other cation

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Origin and Etymology of beidellite

Beidell, locality in Colorado + English -ite

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