B&W polished section images. (C) Herzenbergite (h) and columbite (cb), with remnants of primary cassiterite (c), replaced(?) by varlamoffite (v). (D) Replacement of cassiterite by herzenbergite with euhedral herzenbergite crystals and gangue (g).
Location:
Dykes in three granite pegmatite fields in north-central Sweden. (MinMag, v57:388).