Luetheite

IMA formula: CuAl(AsO4)(OH)2

Crystallography: Monoclinic. P21/m. a = 14.743 Å, b = 5·093 Å, c = 5·598 Å, β = 101.82°. Z = 2.

Specimen #38. Luetheite. 0.6 Miles S.W. of Humboldt Mine, Alum Gulch, Harshaw Mining District, Patagonia Mountains, Santa Cruz County, Arizona, USA. FOV 5.0 mm.