jacobsite

noun ja·cobs·ite \ˈjākəbˌzīt sometimes -kəpˌsīt\

Definition of jacobsite

plural

-s

  1. :  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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