New Brancepeth Colliery (Sleetburn Colliery), Deerness Valley, Durham Coalfield, Co. Durham, England, UK
|Latitude & Longitude (WGS84):||54° 46' 19'' North , 1° 39' 11'' West|
|Latitude & Longitude (decimal):||54.77222,-1.65306|
|UK National Grid Reference:||NZ223420|
|Köppen climate type:||Cfb : Temperate oceanic climate|
Probably the best known of the barium deposits of the coalfield, being described as early as 1900.
Two workable deposits were found, the eastern one being worked for barytes between 1904 and 1921 and then re-opened in 1940.
The western deposit came into production in 1938 and most of the subsequent barium mineral production came from this area. Reported production until closure in 1955 was 221,659 tons, of which only a few percent was of witherite.
12 valid minerals.
This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.
Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org
|Moscovian - Westphalian|
307 - 315 Ma
|Pennine Middle Coal Measures Formation And South Wales Middle Coal Measures Formation (Undifferentiated)|
Russell, A. (1927) Notice of an occurrence of niccolite and ullmannite at the Settlingstones mine, Fourstones, Northumberland; and of serpierite at Ross Island mine, Killarney, Co. Kerry, Ireland. Mineralogical Magazine, vol. 21, n° 119, 383-387. (referring to Spencer, 1910).
Smythe, J.A. (1947) Chemical analysis of ullmannite from New Brancepeth, Co. Durham. Mineralogical Magazine, vol. 28, n° 198, 173-174.