pyrochroite

noun

py·​rochro·​ite

ˌpīrəˈkrōˌīt,

pīˈräkrəˌwīt

plural -s

: a mineral Mn(OH)₂ that is a natural manganous hydroxide

Word History

Etymology

Swedish pyrochroit, from pyr- + Greek chrōs color + Swedish -it -ite; from the fact that it becomes colored when heated

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