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


Locality type:Mine
Classification
Species:Pseudomalachite
Formula:Cu5(PO4)2(OH)4
Comments:Confirmed by IR by Braithwaite & Ryback (1994).
Habit:crusts and masses up to 100mm across
Colour:dark emerald green
Confirmation
Validity:Confirmed
Confirmation Methods:Infrared Spectroscopy
Data
Mineral Data:Click here to view Pseudomalachite data
Locality Data:Click here to view Old Potts Gill Mine, Potts Gill, Caldbeck, Allerdale, Cumbria, England, UK
Data Identifiers
Mindat Occurrence Record ID:17191
Long-form Identifier:1:3:17191:9
GUID (UUID V4):0
Nearest other occurrences of Pseudomalachite
0.6km (0.4 miles) ⓘPotts Gill Copper Mine, Potts Gill, Caldbeck, Allerdale, Cumbria, England, UK
0.7km (0.4 miles) ⓘLow Pike north slopes, Caldbeck, Allerdale, Cumbria, England, UK
0.9km (0.6 miles) ⓘShort Grain, Deer Hills, Caldbeck, Allerdale, Cumbria, England, UK
1.1km (0.7 miles) ⓘOld Sandbed Mine, Caldbeck, Allerdale, Cumbria, England, UK
1.5km (0.9 miles) ⓘDriggith Mine, Caldbeck, Allerdale, Cumbria, England, UK
8.0km (5.0 miles) ⓘSaddleback Old Mine, Mungrisdale, Eden, Cumbria, England, UK
51.5km (32.0 miles) ⓘAuchencairn Barytes Mine, Auchencairn, Dumfries and Galloway, Scotland, 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
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.
Braithwaite, R. S. W., Ryback, G. (1994) Reichenbachite from Cornwall and Portugal. Mineralogical Magazine, 58 (392) 449-454 doi:10.1180/minmag.1994.058.392.09
 
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