cummingtonite
Noun. (chemistry) : A mineral, magnesium-iron silicate hydroxide, (Mg,Fe)7Si8O22(OH)2, originally discovered in Cummington, Massachusetts.This is an unmodified, but possibly outdated, definition from Wiktionary and used here under the Creative Commons license. Wiktionary is a great resource. If you like it too, please donate to Wikimedia.
This entry was last updated on RefTopia from its source on 3/20/2012.