SINCE 1828
wollastonite
noun
wol·las·ton·ite
| \ ˈwu̇-lə-stə-ˌnīt
, ˈwä-
\
, ˈwä-
\
Definition of wollastonite
: a triclinic mineral consisting of a native calcium silicate occurring usually in cleavable masses
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Merriam-Webster unabridged
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