AM_Calcium_3
Formula: Ca
Name: Calcium
Unit cell: 4.0 4.0 6.5 90.0 90.0 120.0 , V=90.07
Space group: P63/MMC (194)

Schottmiller J C , King A J , Kanda F A , Journal of Physical Chemistry , 62 (1958) p.1446-1449, The calcium-strontium metal phase system, Locality: synthetic, Sample: at T = 415 C