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Chalcoalumite from
Penberthy Croft Mine, St Hilary, Cornwall, England, UK

Locality type:Mine
Classification
Species:Chalcoalumite
Formula:CuAl4(SO4)(OH)12 · 3H2O
Comments:Identified by X-Ray diffraction at the Natural History Museum, London. (http://users.breathe.com/minerals/minloc/pencroft/pencroft2.htm)
Confirmation
Validity:Confirmed
Confirmation Methods:XRD
Analysis Reference:NHM London XRD
References
References:Golley, P., Williams, R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications, Truro, Cornwall.

Betterton, J. (2000) Famous Mineral Localities: Penberthy Croft Mine, St. Hilary, Cornwall, England. UK Journal of Mines & Minerals, 20, 7-37.
Data
Mineral Data:Click here to view Chalcoalumite data
Locality Data:Click here to view Penberthy Croft Mine, St Hilary, Cornwall, England, UK
Nearest other occurrences of Chalcoalumite
22.0km (13.7 miles) Wheal Charlotte (Great Wheal Charlotte), Porthtowan, St Agnes, Cornwall, England, UK
27.6km (17.2 miles) Hanover Cove (Vugga Hayle), St Agnes, Cornwall, England, UK
98.8km (61.4 miles) New East Wheal Russell (South Wheal Crebor), Gulworthy, West Devon, Devon, England, UK
 
Mineral and/or Locality  
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