Kassite

Yellow Kassite from Eweslogchorr, Khibiny. The red stuff might be the provisional mineral M-1
[photo/collection: Maurice de Graaf]

Note the resemblance of Kassite and Cafetite. Please consult thefollowing  reference for a detailed description of the differences:
Grey et al, 2003 The crystal structure of chromian kassite from the Saranovskoye deposit, Northern Urals: American Minerlogist Vol 88, 1331-1335