The Beraunite on this specimen is perhaps unsurpassed by any other of the like. I have others on this update but these crystals seem to be sharper and more distinct. The crystals are a deep red, prismatic and striated and measure to 6 or 7mm. On the right side the Kidwellite covers the Beraunite with a dark green color.
Throughout this special edition I am keeping the historic identification as "Beraunite". Several of the Mindat localities in this part of the USA have switched the ID to Eleonorite. It is impossible to discern the the differnces visually. The two are of the same composition. Only the stoichiometery is diiferent. And it's a very subtle difference between ferrous and ferric iron.
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
