Fans to 5mm of red-brown bladed Beraunite on a small mounted thumbnail piece of matrix. This specimen has been IR tested and comes with a Heustis collection data card.
IR tested
Beraunite
Formula
Fe2+Fe3+5(PO4)4(OH)5·6H2O
Crystal System
Monoclinic
Crystal Habit
Druse, Radial, Globular
Cleavage
Good, None, None
Luster
Vitreous - Dull
Color
green, greenish brown, gray green, dark greenish brown, dark red