plural -s
: a mineral Na2AlSi3O8(OH) consisting of a basic sodium aluminum silicate related to the zeolites and occurring in reddish violet masses (hardness 6–7, specific gravity 2.5)

Word History


Danish ussingit, from Niels V. Ussing †1911 Danish mineralogist + Danish -it -ite

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Cite this Entry

“Ussingite.” Dictionary, Merriam-Webster, Accessed 31 May. 2023.

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