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

Locality type:Mine
Formula:Fe3+xFe2+1-xSn(OH)6-xOx (1 ≥ x > 0.5)
Comments:[[1]]"Specimens from Penberthy Croft Mine were identified at thc Natural History Muscum (London) using a combination of X-ray diffractometry and electron probe microanalysis."

[[1]]"Jeanbandyite occurs in intimate intergrowth with natanite in lustrous, yellow, transparent to translucent, pseudo-octahedral crystals up to 0.4 mm across."
Confirmation Methods:XRD
Analysis Reference:NHM London XRD and SEM
References:Betterton, J. (2000) Famous Mineral Localities: Penberthy Croft Mine, St. Hilary, Cornwall, England. UK Journal of Mines & Minerals, 20, 7-37.

Betterton, J., Green, D.I., Jewson, C., Spratt, J., Tandy, P. (1998) The composition and structure of jeanbandyite and natanite. Mineralogical Magazine, 62:5, 707-712.
Mineral Data:Click here to view Jeanbandyite data
Locality Data:Click here to view Penberthy Croft Mine, St Hilary, Cornwall, England, UK
Nearest other occurrences of Jeanbandyite
2.9km (1.8 miles) Wheal Neptune, Perranuthnoe, Cornwall, England, UK
73.4km (45.6 miles) Killham Mine (Pensilva Tin Mine; Wheal Coryton), St Neot, Cornwall, England, UK
93.9km (58.4 miles) Hingston Down Quarry, Gunnislake, Calstock, Cornwall, England, UK
Mineral and/or Locality  
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