serendibite

noun

seren·​dib·​ite

¦serən¦diˌbīt,

səˈrendə̇ˌb-

plural -s

: a mineral (Ca,Mg)₅Al₅B₂Si₂O₁₀ consisting of a silicate and borate of calcium, magnesium, and aluminum and occurring in irregular blue grains in Sri Lanka

Word History

Etymology

from Serendib, Serendip, former name for Ceylon (from Arabic Sarandīb) + English -ite

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