AM_Chromium_3 Formula: Cr Name: Chromium Unit cell: 2.714 2.714 4.41 90.0 90.0 120.0 , V=28.13 Space group: P63/MMC (194)

Bradley A J , Ollard E F , Nature , 117 (1926) p.122-122, Allotropy of chromium, Locality: synthetic