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

Locality type:Mine
Comments:The largest stolzite crystal on the specimen is an isolated double-terminated dark brown tetragonal bipyramid, which is 1.1 mm in length. The pale brown to buff crystal aggregates lining the polyhedral cavity are made up of smaller crystals, not usually exceeding 0.5 mm long. They cover areas up to 4 mm across and are commonly aggregated into masses that exhibit parallel growth. Most of the crystals are bounded by eight well-developed faces belonging to the common steeply pyramidal form n {11O}; this is sometimes truncated by the pinacoid c {001}, which is most often present on the larger crystals, and occasionally modified by A {111}. Less steeply pyramidal forms are present on a few crystals, but they are too small to measure reliably. Moulding, D., Hooper, J., Green, D.I. (2008) Stolzite from Penberthy Croft Mine, St Hilary, Cornwall. Journal of the Russell Society, 11, 88-90.
Colour:colourless, pale buff, pale to dark brown
Validity:Believed Valid
References:Moulding, D., Hooper, J., Green, D.I. (2008) Stolzite from Penberthy Croft Mine, St Hilary, Cornwall. Journal of the Russell Society, 11, 88-90.
Mineral Data:Click here to view Stolzite data
Locality Data:Click here to view Penberthy Croft Mine, St Hilary, Cornwall, England, UK
Nearest other occurrences of Stolzite
12.3km (7.6 miles) Treworlis Mine, Helston, Cornwall, England, UK
28.1km (17.5 miles) Cligga Mine, Cligga Head, Perranporth, Perranzabuloe, Cornwall, England, UK
80.7km (50.2 miles) Cheesewring Quarry, Minions, Linkinhorne, Cornwall, England, UK
93.9km (58.4 miles) Hingston Down Quarry, Gunnislake, Calstock, Cornwall, England, UK
Mineral and/or Locality  
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