Fluorapatite — Ca₅(PO₄)₃F, hexagonal apatite (P6₃/m). Main industrial P for fertilizer; F end-member vs bone hydroxylapatite.

Green–blue–yellow–violet, vitreous, Mohs 5. Spin below.

Specimen image: AI-generated.
https://apps.apple.com/us/app/rockspin/id6747876962
#Fluorapatite #Minerals #RockSpin