Shirokshinite, Natrolite
Kirovskii apatite mine, Kukisvumchorr Mt, Khibiny Massif, Murmansk Oblast, Russia
Dark-brown columnar agregate from shirokshinite crystals into undetermined pinkish-brown finegrained phillosilicate masses on greenish nathrolite. FOV is ~12x10 mm. Collected by Igor V. Pekov on the second occurrence of this mineral on 252 m level of the mine in 2005. Pavel M. Kartashov collection and photo.
© Pavel M. Kartashov collection & photo