hoernesite

noun

hoer·​nes·​ite

ˈhərnəˌsīt,

ˈhȯr-

plural -s

: a mineral Mg₃As₂O₈.8H₂O consisting of hydrous magnesium arsenate occurring as crystals resembling gypsum

Word History

Etymology

German hörnesit, from Moritz Hoernes †1868 Austrian paleontologist + German -it -ite

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