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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Hemimorphite from
Ingray Gill, Caldbeck, Allerdale, Cumbria, England, UK


Classification
Species:Hemimorphite
Formula:Zn4Si2O7(OH)2 · H2O
Comments:Green et al. (2009): Hemimorphite is present on one specimen [in the Kingsbury Collection, BM(NH)] which is broken into several pieces. It occurs as radiating aggregates of well-formed translucent white to pale yellow crystals up to 3 mm long in limonite-filled cavities in white vein quartz. The size and quality of the crystals would make this one of the better specimens from the Caldbeck Fells if it was genuine. It is unlike any specimen in the NT collection or in the Kingsbury subsidiary collection and is probably fraudulent.
Confirmation
Validity:Unconfirmed/Questioned
Data
Mineral Data:Click here to view Hemimorphite data
Locality Data:Click here to view Ingray Gill, Caldbeck, Allerdale, Cumbria, England, UK
Data Identifiers
Mindat Occurrence Record ID:6171
Long-form Identifier:1:3:6171:1
GUID (UUID V4):0
Nearest other occurrences of Hemimorphite
1.2km (0.7 miles) ⓘPotts Gill Copper Mine, Potts Gill, Caldbeck, Allerdale, Cumbria, England, UK
1.2km (0.8 miles) ⓘOld Potts Gill Mine, Potts Gill, Caldbeck, Allerdale, Cumbria, England, UK
1.4km (0.9 miles) ⓘBrae Fell Mine, Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK
2.3km (1.4 miles) ⓘRed Gill Mine, Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK
2.3km (1.5 miles) ⓘOld Sandbed Mine, Caldbeck, Allerdale, Cumbria, England, UK
2.3km (1.5 miles) ⓘRoughton Gill, Caldbeck, Allerdale, Cumbria, England, UK
2.4km (1.5 miles) ⓘRoughton Gill Mine, Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK
2.5km (1.6 miles) ⓘDriggith Mine, Caldbeck, Allerdale, Cumbria, England, UK
2.7km (1.7 miles) ⓘSilver Gill, Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK
3.0km (1.8 miles) ⓘHigher Roughton Gill (Balliway Rigg), Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK
References
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.
Green, D.I., Rumsey, M.S., Bridges, T.F., Thomson, N. (2009) A Review of the mineralisation at Ingray Gill, Caldbeck Fells, Cumbria. Journal of the Russell Society, 12. 35-47
 
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