Planerite on Quartzite, Montgomery Co. Quarry, Mauldin Mountain, Mt. Ida, Arkansas, USA RARE!
Lovely, mm-scale, blue-green botryoids of the aluminum phosphate, Planerite, grace a light grey, fine-grained pure quartzite/chert of the Ordovician Bigfork Chert formation. Planerite is a rare member of the Turquoise Group.
