AM_Calcium-beta Formula: Ca Name: Calcium-beta Unit cell: 3.98 3.98 6.52 90.0 90.0 120.0 , V=89.44 Space group: P63/MMC (194)

Wyckoff R W G , Crystal Structures , 1 (1963) p.7-83, Second edition. Interscience Publishers, New York, New York, Sample at T = 450 C, Hexagonal closest packed, hcp, structure