Sunday, 27 March 2016

Cligga Head - mines and minerals.

Walking along the coast from Perranporth to St Agnes there is plenty of good 'scratting' opportunity on the many spoil heaps and the cliff colours and forms are magnificent. Apparently there has been more than 2000 years of mining activity on the site. 
The greisen sheet vein stockworks. Greisen is the anglo saxon word for granitic rock with tin ore and virtually no feldspar. The mines are best described by Dines (1969) in a massive memoir...but with a limited geological and mineralogical knowledge I'd need to do far more research to discuss this further! 
Mines on the cliff top and in the cliff face at Cligga.
Spectacular copper staining....
...and spectacular minerals. 

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