Name: Smithsonite Aurichalcite.
Location: 79 mine Gila co Arizona USA.
Size: 170 x 120 x 80 mm.
Weight: 999 gm.
Comment: A large size specimen of this species is a rare sight these days,especially from this well known US mine.
One of the hard carbonates with well formed rhombohedral crystals ,associated with another showy sky blue carbonate.A larger than usual size normally seen for sale on most sites.