M452 - Calcium aluminate crystals Ca3Al2(SO4)(F,OH)10·2(H2O) from Mina Navidad Mine, Abasolo, Durango, Mexico.

Named after a locality, Creed Quadrangle, Colorado, these monoclinic - prismatic crystals frequently occur with fluorine.

Small and Large sizes

Small:$6.50 each

EXCELLENT PRICE

GREAT  VALUE

Large:$19.50 each

Some specimens have fluorine crystals. (this is the Small size)