Formed during metamorphism of aluminum-rich rocks, this mineral commonly occurs as twined crystals earning it the name “fairy crosses”. Its name is derived from the Greek word meaning “cross,” in allusion to its cruciform twins.
Minerals
Formed during metamorphism of aluminum-rich rocks, this mineral commonly occurs as twined crystals earning it the name “fairy crosses”. Its name is derived from the Greek word meaning “cross,” in allusion to its cruciform twins.
Mineral Photos courtesy of R.Weller/Cochise College