Ashburtonite

IMA formula: HCu₄Pb₄Si₄O₁₂(HCO₃)₄(OH)₄Cl

Crystallography: Tetragonal. I4/m. a = 14.234(7) Å, c = 6.103(5) Å. Z = 2.

Specimen #20. Ashburtonite. Ashburton Downs Station, Ashburton Shire, Western Australia, Australia. FOV 3.2 mm.