Corsi Collection of Decorative Stones

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view of stone 887

Corsi 887, approx. 145 x 73 x 40 mm, © Oxford University Museum of Natural History

OUMNH Number: 887  
Name and quarry location: Corsican granite, granito di Corsica, from Corsica, France  
Geological description: Porphyritic microdiorite, probably plagioclase/biotite, over much of the specimen. Replacement of feldspar by aggregates of epidote is gradational in places, but sharp across a 1mm wide sheer zone or veinlet.  
Comments: Corsi's locality has not been confirmed.  
References:  
Further information:
 


Corsi's classification: Class 16. Granites; ii. Italian granites  
Corsi's text: 215.39 Granito di Corsica  

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