Formula: PbCu(SO₄)(OH)₂

Species: Sulfates

Colour: Deep azure blue; deep blue in transmitted light.

Lustre: Sub-Adamantine, Vitreous

Hardness: 2½

Specific Gravity: 5.35

Crystal System: Monoclinic

Member of: Linarite-Chenite Group

Name: Named in 1839 by Ernst Friedrich Glocker for the type locality, Linares, Linares-La Carolina District, Jaén, Andalusia, Spain.

Type Locality: Linares, Jaén, Andalusia, Spain

The S (sulfate(VI)) analogue of franksousaite. Usually found as small to microscopic azure blue crystals, either tabular or elongated, in clusters or as crusts.