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Blue Circle Cement Quarry, Eastgate, Weardale, North Pennines, Co. Durham, England, UK
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UK Grid Reference: NY950370
Latitude: 54°43'40"N
Longitude: 2°4'39"W
 
 
The Blue Circle Cement Quarry works an exposure of the Great Limestone on the south side of the Wear River, between the villages of Eastgate and Westgate. The quarry was in operation from the mid 1960's until closure in 2002. It is the third source, along with the Heights Quarry and Rogerley Mine, of emerald green fluorite in Weardale. Fluorite crystals from the Cement Quarry are often paler green than either the Heights or Rogerley, and usually have a purplish gray cast due to internal purple color zones. Yellow, pale blue and purple fluorite are also found. Mineralization is found in flats associated with ore-bearing veins in exposures of the Great Limestone. No studies of mineralization in the quarry have been published, but it is likely that mineralization occurs along an extension of the Heights West Cross Vein on the south side of the River Wear.

Mineral List

Aragonite
Calcite
Fluorite
Galena
Goethite
Pyrite
Quartz
Siderite


8 entries listed. 8 valid minerals.

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Copyright © Jolyon Ralph and Ida Chau 1993-2014. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of thousands of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
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