White hambergite crystal. Sample is 5 x 2 x 0.7 cm in size. From Himalaya Mine, Gem Hill, Mesa Grande District, San Diego County, California. (Image courtesy Rob Lavinsky and irocks.com; unauthorized reproduction is prohibited.)

Formula: Be2BO3(OH) Orthorhombic


Hambergite is a clear to white vitreous mineral found in certain complex pegmatites.

FLORENCE COUNTY: Hambergite is reported from the complex pegmatite dikes in T.39N. R.17E., near Fern (Falster, 1992, personal communication).