Unnamed diatreme [1], Bidahochi Butte, Bidahochi, Hopi Buttes Mining District, Navajo County, Arizona, USA
Dark brown Augite crystals, 15mm field of view. Rolf Luetcke specimen and photo.
Augite crystals.
© Pedrosa
Dark brown Augite crystal, 6mm field of view. Rolf Luetcke specimen and photo.
Small, sharp, black augite crystals frozen in matrix. Purchased from David Shannon Minerals in 1990.
© Andrew Hodgson