Associated minerals are: dolomite, fluororichterite, chromite, thorianite
, forsterite and phlogopite.
Included were Madagascar rare-earth classics like sharp betafite crystals to 4 cm; well-composed earthy brown sprays of 2-cm euxenite crystals; swarms of loose 1 and 2-cm cubes of lustrous black thorianite
; and allanite crystal groups from Madagascar and from Alto Ligonha, Mozambique.
Behier wrote a mineralogy of Mozambique (1957) and a supplement to the mineralogy of Madagascar (1960); consequently his collection was strong in Madagascar minerals, including tourmaline, betafite, thorianite
, and other pegmatite species.
Melanocerite, ortholavenite, loparite, thorite, thorianite
, eudialyte, perrierite, chevkinite, zircon, leucophanite, catapleiite, astrophyllite, tainiolite, calcium-rich seidozerite are found in nepheline-albite phenites at the exocontact.
has been identified from the Namivo-Tomeia-Nampoca group of pegmatites (DSGM, 1974).