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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Conichalcite from
Old Potts Gill Mine, Potts Gill, Caldbeck, Allerdale, Cumbria, England, UK


Locality type:Mine
Classification
Species:Conichalcite
Formula:CaCu(AsO4)(OH)
Comments:Kingsbury reference. Cooper & Stanley (1990): "From the 'old No. 2 [No. 1?] cross-cut' as 'small, characteristic bright grass-green globules and botryoidal aggregates in cavities in iron-stained quartz: in one case it is associated with olivenite' (Kingsbury & Hartley, MS). Specimens matching this description are preserved in the Kingsbury Collection, BM(NH)."
Habit:globules and botryoidal aggregates
Colour:bright grass-green
Confirmation
Validity:Erroneously Reported
Data
Mineral Data:Click here to view Conichalcite data
Locality Data:Click here to view Old Potts Gill Mine, Potts Gill, Caldbeck, Allerdale, Cumbria, England, UK
Data Identifiers
Mindat Occurrence Record ID:15608
Long-form Identifier:1:3:15608:0
GUID (UUID V4):0
Nearest other occurrences of Conichalcite
1.5km (0.9 miles) ⓘDriggith Mine, Caldbeck, Allerdale, Cumbria, England, UK
2.7km (1.7 miles) ⓘBrandy Gill Mine, Mungrisdale, Eden, Cumbria, England, UK
References
Kingsbury, A.W.G. and Hartley, J. (MS) (1951) New occurrences of rare minerals in the northern part of the English Lake District: part 1.
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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