Formula: Pb₃Cl₂O₂

Species:

Colour: Colourless, white, grey, often tinged yellow, blue, red; nearly colourless in transmitted light

Lustre: Adamantine, Resinous, Silky, Pearly

Hardness: 2½ – 3

Specific Gravity: 7.24

Crystal System: Orthorhombic

Name: After the type locality at the Mendip Hills, Somerset – England, UK.

Type Locality: Mendip Hills, Somerset – England, UK

Chemically similar to damaraite.