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ralstonite
noun
ral·ston·ite
\ˈrȯlztəˌnīt, -lst-\
Definition of ralstonite
-s
: a mineral NaMgAl5F12(OH)6.3H2O consisting of a hydrous basic fluoride of aluminum, sodium, and magnesium in octahedral crystals
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Origin and Etymology of ralstonite
J. Grier Ralston, 19th century American clergyman + English -ite
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