Vote for your favorite mineral in #MinCup26! - Sphalerite vs. Anorthite
Both zinc ore Sphalerite and calcium plagioclase feldspar Anorthite have perfect cleavage that will split cleanly if you hit them with a hammer, but only one can claim a larger split of your votes!
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Jarosite from
Brandy Gill Mine, Mungrisdale, Eden, Cumbria, England, UK


Locality type:Mine
Classification
Species:Jarosite
Formula:KFe33+(SO4)2(OH)6
Comments:Kingsbury reference.

Kingsbury & Hartley (1958): "small compact masses of glistening yellow-brown crystals in the outcrop of an east-west lead-copper vein near the head of the gill on the western side (B.M. 1958, 44); also in similar crystalline patches in vein-quartz derived from an old cross-cut on the eastern side."

Hartley (1984): from the top western dump.

Colour:yellow-brown
Confirmation
Validity:Unconfirmed/Questioned
Data
Mineral Data:Click here to view Jarosite data
Locality Data:Click here to view Brandy Gill Mine, Mungrisdale, Eden, Cumbria, England, UK
Data Identifiers
Mindat Occurrence Record ID:6550
Long-form Identifier:1:3:6550:4
GUID (UUID V4):0
Nearest other occurrences of Jarosite
0.8km (0.5 miles) ⓘCarrock Mine, Mungrisdale, Eden, Cumbria, England, UK
1.0km (0.6 miles) ⓘGrains Gill, Mungrisdale, Eden, Cumbria, England, UK
1.6km (1.0 miles) ⓘDriggith Mine, Caldbeck, Allerdale, Cumbria, England, UK
2.0km (1.3 miles) ⓘBurdell Gill, Coombe Height, Caldbeck, Allerdale, Cumbria, England, UK
2.1km (1.3 miles) ⓘHigher Roughton Gill (Balliway Rigg), Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK
2.1km (1.3 miles) ⓘRoughton Gill Mine, Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK
2.1km (1.3 miles) ⓘBalliway Rigg, Caldbeck, Allerdale, Cumbria, England, UK
2.2km (1.4 miles) ⓘOld Sandbed Mine, Caldbeck, Allerdale, Cumbria, England, UK
2.3km (1.4 miles) ⓘSilver Gill, Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK
2.6km (1.6 miles) ⓘHay Gill Copper Mine, Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK
References
Kingsbury, Arthur W. G., Hartley, J. (1958) Jarosite and natrojarosite from the Lake District. Mineralogical Magazine and Journal of the Mineralogical Society, 31 (240). 813-815 doi:10.1180/minmag.1958.031.240.09
Hartley, J. (1984) A list of minerals associated with the ore deposits of the Caldbeck Fells, Cumbria. Transactions of the Leeds Geological Association, 10 (3) 22-39
Cooper, M. P., Stanley, C. J. (1990) Minerals of the English Lake District - Caldbeck Fells. The Natural History Museum, London.
 
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