Formula: Pb₂CuCl₂(OH)₄

Species: Halides

Colour: Blue

Lustre: Adamantine

Hardness: 2½

Specific Gravity: 5.41 – 5.43

Crystal System: Tetragonal

Member of: Diaboleite Subgroup > Non-stoichiometric Perovskites Group > Perovskite Supergroup

Name: From Greek διά, “Dia”, apart or distinct from, in allusion to its difference from boleite. Diaboléite (with diacritic) has been used, but this is not accepted usage (Burke 2008).

Type Locality: Higher Pitts Mine, Priddy, Mendip, Somerset, England, UK

May be confused with cumengeite.