Bultfonteinite
noun
Bult·fon·tein·ite
ˌbəlt(ˌ)fän‧ˈtāˌnīt,
-fən-
plural -s
: a mineral Ca2SiO2(OH,F)2 consisting of calcium silicate with hydroxyl or fluoride that is found at Bultfontein, South Africa
Word History
Etymology
Bultfontein, village in Cape Province, Republic of South Africa + English -ite