Mereheadite is a rare oxychloride that can be found with Mendipite

Mendipite

Mendipite is a rare mineral that was named in 1939 for the locality where it is found, the Mendip Hills in Somerset, England. It is an oxide of lead, with chlorine, formula Pb3O2Cl2.-Crystal structure:...

 at Merehead quarry

Torr Works

Torr Works quarry, is a limestone quarry at East Cranmore, near Shepton Mallet on the Mendip Hills, Somerset, England. It is also known as Merehead Quarry....

, Cranmore

Cranmore, Somerset

Cranmore is a village and civil parish east of Shepton Mallet, in the Mendip district of Somerset, England. The parish includes the hamlets of Waterlip, East Cranmore and Dean where Dean farmhouse dates from the 17th century, as does The Old Smithy, just off the A361 which was originally two...

, Somerset

Somerset

The ceremonial and non-metropolitan county of Somerset in South West England borders Bristol and Gloucestershire to the north, Wiltshire to the east, Dorset to the south-east, and Devon to the south-west. It is partly bounded to the north and west by the Bristol Channel and the estuary of the...

, in the United Kingdom.
Most specimens are associated with Calcite

Calcite

Calcite is a carbonate mineral and the most stable polymorph of calcium carbonate . The other polymorphs are the minerals aragonite and vaterite. Aragonite will change to calcite at 380-470°C, and vaterite is even less stable.-Properties:...

, Mendipite or hydrous Cerussite

Cerussite

Cerussite is a mineral consisting of lead carbonate , and an important ore of lead. The name is from the Latin cerussa, white lead. Cerussa nativa was mentioned by Conrad Gessner in 1565, and in 1832 F. S. Beudant applied the name cruse to the mineral, whilst the present form, cerussite, is due to...

 in the Manganese pods on vein two.
This mineral is associated with Symesite which is also light yellow to orange. Symesite is found in small blotches on the Calcites or Mendipites; Mereheadite does not, as it is most often found in veins

Vein (geology)

In geology, a vein is a distinct sheetlike body of crystallized minerals within a rock. Veins form when mineral constituents carried by an aqueous solution within the rock mass are deposited through precipitation...

.