Marker Stone for the Cornubian Mine at SW 999597 is a Grade II listed building in the Cornwall local planning authority area, England. First listed on 28 August 1987. Marker stone.

Marker Stone for the Cornubian Mine at SW 999597

WRENN ID
fallen-bonework-curlew
Grade
II
Local Planning Authority
Cornwall
Constituency
St Austell and Newquay MP: Noah Law (Lab)
Country
England
Date first listed
28 August 1987
Type
Marker stone
Address
Marker Stone for the Cornubian Mine at SW 999597, Roche
OS grid reference
SW 999 597
Coordinates
50.40309, -4.81613
Source
Historic England listing

Also on this page: flood risk · radon risk · weather exposure · detailed attributes ↓

Description

The marker stone for the Cornubian Mine dates from the late 19th century. It is a roughly hewn granite monolith that stands about 40 centimetres high and has a roughly square shape. The stone features carved lettering on two faces, with the inscription "RR6CU" in upper case with serifs on one side, while the other side is illegible.

Local climate

Marker Stone for the Cornubian Mine at SW 999597 receives an average of 960 mm of rain a year. This makes it wetter than 74% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 86% of listed buildings.

It experiences an average of 10 freeze-thaw cycles a year, fewer than 91% of listed buildings. Of these, 4 follow at least 1 mm of rain in the preceding 48 hours. Average temperatures at this location have risen by 0.3°C per decade since 1991.

Averages for 1991–2020; temperature trend 1991–2025. Figures describe the wider area (a grid cell of roughly 10 km), not the individual site. Contains modified Copernicus Climate Change Service information 2026.

More on this building

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  • No EPC on record for this property
  • No sale records on file
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  • Detailed attributes — period, style, materials, features
  • Flood risk assessment
  • Radon risk assessment
  • Weather exposure and heating demand — rain and frost month by month and year by year, wind direction, solar and humidity
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