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Jarosite from
Old Sandbed Mine (Old Sandbeds Mine), Caldbeck, Allerdale, Cumbria, England, UK


Locality type:Mine
Classification
Species:Jarosite
Formula:KFe33+(SO4)2(OH)6
Comments:Green et al. (2006): "Jarosite was identified by EDS at Sandbed mine in thin fractures in pyrite-rich quartz matrix as pale yellow-brown earthy crusts made up of crystals up to a few microns across. Similar material has been collected from the dumps of Driggith mine. Jarosite is restricted to fractures in the matrix, where it is exposed to the atmosphere it alters to goethite. According to Hartley (1984), jarosite was found at the outcrop workings between the Driggith and Sandbed mines. The basis for this record appears to be specimen K53/174, which was part of a larger specimen that was sent in three pieces (K531173-175) to Hartley for XRD identification. In Kingsbury's notes made after analysis, it is recorded that "K53/174 - Driggith Outcrop - Close to j" because K531173 came back as "K53/173 - Driggith Outcrop - Maybe Pj" it is assumed, that "j" means jarosite and "Pj" means plumbojarosite. Although it may be genuine, the identification does not appear to have been conclusive and the provenance of the specimen has to be treated with caution."
Confirmation
Validity:Confirmed
Confirmation Methods:SEM-EDS
Data
Mineral Data:Click here to view Jarosite data
Locality Data:Click here to view Old Sandbed Mine (Old Sandbeds Mine), Caldbeck, Allerdale, Cumbria, England, UK
Data Identifiers
Mindat Occurrence Record ID:555997
Long-form Identifier:1:3:555997:8
GUID (UUID V4):ca7ee0ea-a6f5-4f23-bb39-7f5b3e3bc8cb
Nearest other occurrences of Jarosite
0.6km (0.4 miles) Dumpy Stone Level, Caldbeck, Allerdale, Cumbria, England, UK
0.6km (0.4 miles) Driggith Mine (Driggeth Mine), Caldbeck, Allerdale, Cumbria, England, UK
1.1km (0.7 miles) Old Potts Gill Mine, Potts Gill, Caldbeck, Allerdale, Cumbria, England, UK
1.3km (0.8 miles) Nether Row Brow, Caldbeck, Allerdale, Cumbria, England, UK
1.6km (1.0 miles) Potts Gill Copper Mine, Potts Gill, Caldbeck, Allerdale, Cumbria, England, UK
2.1km (1.3 miles) Hay Gill Copper Mine, Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK
2.2km (1.4 miles) Brandy Gill Mine, Mungrisdale, Eden, Cumbria, England, UK
2.3km (1.5 miles) Ingray Gill, Caldbeck, Allerdale, Cumbria, England, UK
3.0km (1.8 miles) Carrock Mine, Mungrisdale, Eden, Cumbria, England, UK
3.1km (1.9 miles) Roughton Gill Mine, Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK
References
 
Mineral and/or Locality  
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