1529-6466/02/0050-0003$05.00 DOI:10.2138/rmg.2002.50.3 3 Trace-Element Systematics of Beryllium in Terrestrial Materials

Although often studied as key constituent in minerals, the low mass element (Z = 4; M = 9.0012182 amu) beryllium is most commonly encountered as a very low abundance trace metal in rocks and fluids. In terms of atomic structure and valence state, Be is affiliated with alkaline earth elements; but geologically and chemically beryllium show