Wiktionary
hambergite
n. (context mineral English) An orthorhombic-dipyramidal mineral containing beryllium, boron, hydrogen, and oxygen.
Wikipedia
Hambergite
Hambergite (BeBOOH) is a beryllium borate mineral named after Swedish explorer and mineralogist Axel Hamberg (1863–1933). The mineral occurs as white or colorless orthorhombic crystals.