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


Locality type:Mine
Classification
Species:Cyanotrichite
Formula:Cu4Al2(SO4)(OH)12 · 2H2O
Comments:Kingsbury reference. A small specimen in the Kingsbury Collection, BM(NH) shows small azurite crystals associated with ?jarosite and malachite embedded in pale blue matted cyanotrichite fibres from the "old No. 1 cross-cut dumps. Listed from here by Hartley (1984).
Habit:fibrous
Colour:pale blue
Confirmation
Validity:Unconfirmed/Questioned
Data
Mineral Data:Click here to view Cyanotrichite data
Locality Data:Click here to view Old Potts Gill Mine, Potts Gill, Caldbeck, Allerdale, Cumbria, England, UK
Data Identifiers
Mindat Occurrence Record ID:15737
Long-form Identifier:1:3:15737:1
GUID (UUID V4):0
Nearest other occurrences of Cyanotrichite
89.7km (55.7 miles) ⓘLeadhills, South Lanarkshire, Scotland, 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.
 
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