norbergite

norbergite

[′nȯr‚bər‚gīt]
(mineralogy)
Mg3SiO4(F,OH)2 A yellow or pink orthorhombic mineral composed of magnesium silicate with fluoride and hydroxyl; it is a member of the humite group.
References in periodicals archive ?
058 Norbergite, Samuelsonite, Fersmanite, Fergusonite- beta-(Ce) 9.
Dudley Blauwet of Mountain Minerals International is, as usual, just back from Asia with something new and interesting: this time it's excellent norbergite crystals in matrix from Oak Saung Tang, Mogok, Myanmar (Burma).
All four of the classic members of the humite group - humite, clinohumite, chondrodite and norbergite - are found at Monte Somma/Vesuvius.