ˌbəlt(ˌ)fän.ˈtāˌnīt, -_fən noun
( -s )
Usage: usually capitalized
Etymology: Bultfontein, village in Cape Province, Union of So. Africa + English -ite
: a mineral Ca 2 SiO 2 (OH,F) 2 consisting of calcium silicate with hydroxyl or fluoride that is found at Bultfontein, So. Africa