Bechererite

IMA formula: Zn₇Cu(OH)₁₃[SiO(OH)₃(SO₄)]

Crystallography: Trigonal. P3. a = 8.319 (2) Å, c = 7.377 (1) Å. Z = 1.

Specimen #244. Bechererite (pale blue-green hexagons) and siligiite (white sprays). Redmond Mine, Waterville Lake, Haywood County, North Carolina, USA. FOV 1.7 mm.