jacobsite
noun
ja·cobs·ite
\ˈjākəbˌzīt sometimes -kəpˌsīt\
Definition of jacobsite
-s
: a black magnetic isometric mineral MnFe2O4 consisting of an oxide of manganese and iron and constituting a member of the magnetite series
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Origin and Etymology of jacobsite
French jakobsite, from Jakobsberg, Sweden, its locality + French -ite
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