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Brewsterite Subgroup from
Roughton Gill Mine, Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK


Locality type:Mine
Classification
Species:'Brewsterite Subgroup' (not an IMA approved species)
Comments:Cooper & Stanley (1990): "The 'brewsterite' recorded by Hall (1868) as an associate of tenorite and chalcopyrite is unlikely to be the zeolitic brewsterite (of Brooke) as assumed by Young (1987). It is more likely to be the 'brewsterite' listed by Branston (1910) and Postlethwaite (1913) as 'protoxide of copper'. Although the latter is a synonym of cuprite, the name brewsterite in this context does not appear in any standard mineralogy or synonymy known to the authors and the precise definition of the term appears to be lost."
Confirmation
Validity:Unconfirmed/Questioned
Data
Mineral Data:Click here to view Brewsterite Subgroup data
Locality Data:Click here to view Roughton Gill Mine, Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK
Data Identifiers
Mindat Occurrence Record ID:15067
Long-form Identifier:1:3:15067:9
GUID (UUID V4):0
References
Hall, Townshend M. (1868) The Mineralogist's Directory: or, a guide to the Principal Mineral Localities in the United Kingdom of Great Britain and Ireland. Edward Stanford.
Young, B. (1987) Glossary of the minerals of the Lake District and adjoining areas. British Geological Survey, Newcastle upon Tyne. 104pp.
Cooper, M. P., Stanley, C. J. (1990) Minerals of the English Lake District - Caldbeck Fells. The Natural History Museum, London.
 
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