Goudeyite

IMA formula: Cu₆Al(AsO₄)₃(OH)₆(H₂O)₃

Crystallography: Hexagonal. P6₃/m. a = 13.472(1) Å, c = 5.902(4) Å. Z = 2.

Specimen #101. Goudeyite. Clara Mine, Oberwolfach, Ortenaukreis, Freiburg Region, Baden-Württemberg, Germany. FOV 3.9 mm.