senarmontite

noun

sen·​ar·​mon·​tite

ˌsenə(r)ˈmänˌtīt

plural -s

: a colorless or grayish mineral Sb₂O₃ consisting of native antimony trioxide and occurring in octahedral crystals or in masses

Word History

Etymology

Henri de Sénarmont †1862 French mineralogist + English -ite

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