Occurs with leakeite, kornite, albite, braunite, and bixbyite associated with cross-cutting epigenetic veins that have reacted with regionally metamorphosed rocks containing Mn-rich minerals. Amphibole group
Approved IMA 2005 (Dana # Added)
Kajlidongri manganese mine, Jhabua District, Madhya Pradesh, India. Link to MinDat.org Location Data.
Named for Giancarlo Della Ventura, Universit� degli Studi di Roma Tre, for his extensive work on the crystal chemistry of synthetic amphiboles.