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
Burdell Gill, Coombe Height, Caldbeck, Allerdale, Cumbria, England, UK


Locality type:River
Classification
Species:Jarosite
Formula:KFe33+(SO4)2(OH)6
Comments:Kingsbury reference. Kingsbury & Hartley (1958): "in gossany vein-stuff from a north-south iron- manganese vein tried near the head of the Gill, 400 yards southwest of Coomb Height; forms compact brown crystalline masses and small (up to 2 mm.) brown rhombohedral crystals on goethite and
saccharoidal quartz. The crystals resemble brownish pharmacosiderite also occurring here (B.M. 1956, 78; 1958, 45).
Confirmation
Validity:Unconfirmed/Questioned
Data
Mineral Data:Click here to view Jarosite data
Locality Data:Click here to view Burdell Gill, Coombe Height, Caldbeck, Allerdale, Cumbria, England, UK
Data Identifiers
Mindat Occurrence Record ID:6549
Long-form Identifier:1:3:6549:8
GUID (UUID V4):0
Nearest other occurrences of Jarosite
1.5km (0.9 miles) ⓘHigher Roughton Gill (Balliway Rigg), Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK
1.7km (1.1 miles) ⓘCarrock Mine, Mungrisdale, Eden, Cumbria, England, UK
1.7km (1.1 miles) ⓘBalliway Rigg, Caldbeck, Allerdale, Cumbria, England, UK
1.8km (1.1 miles) ⓘGrains Gill, Mungrisdale, Eden, Cumbria, England, UK
1.8km (1.1 miles) ⓘSilver Gill, Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK
2.0km (1.3 miles) ⓘBrandy Gill Mine, Mungrisdale, Eden, Cumbria, England, UK
2.1km (1.3 miles) ⓘRoughton Gill Mine, Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK
3.6km (2.2 miles) ⓘDriggith Mine, Caldbeck, Allerdale, Cumbria, England, UK
3.6km (2.2 miles) ⓘHay Gill Copper Mine, Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK
4.1km (2.6 miles) ⓘOld Sandbed Mine, 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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