Hollandite
Hollandite is an oxide mineral. It is the barium-manganese endmember of the coronadite group.
A mineral, with the chemical composition BaMn4+6Fe3+2O16, that was first found in the Kajlidongri mine in the Jhabua district of Madhya Pradesh, India, had the name hollandite until it was reclassified as ferrihollandite by the International Mineralogical Association in 2012. Ferrihollandite is the barium-iron endmember of the coronadite group.
Rare quartz inclusion
