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


Locality type:River
Classification
Species:Cacoxenite
Formula:Fe243+AlO6(PO4)17(OH)12 · 75H2O
Comments:Kingsbury reference? Cooper & Stanley (1990): "This appears to be the first published British occurrence of the species, although long-known from localities in Cornwall. Specimens in the Kingsbury Collection, BM(NH), show yellow fibres of cacoxenite on a 'limonitic' matrix."
Habit:fibrous
Colour:yellow
Confirmation
Validity:Unconfirmed/Questioned
Data
Mineral Data:Click here to view Cacoxenite data
Locality Data:Click here to view Burdell Gill, Coombe Height, Caldbeck, Allerdale, Cumbria, England, UK
Data Identifiers
Mindat Occurrence Record ID:2541
Long-form Identifier:1:3:2541:6
GUID (UUID V4):0
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
Young, B. (1987) Glossary of the minerals of the Lake District and adjoining areas. British Geological Survey, Newcastle upon Tyne. 104pp.
Cooper, M. P., Stanley, C. J. (1990) Minerals of the English Lake District - Caldbeck Fells. The Natural History Museum, London.
 
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