Corsi Collection of Decorative Stones

view of stone 881

Corsi 881, approx. 145 x 73 x 40 mm, © Oxford University Museum of Natural History

OUMNH Number: 881  
Name and quarry location: Pietra di Malanaggio, from Malanaggio, Val Chisone, Piedmont, Italy  
Geological description: Grey medium-grained foliated meta-granodiorite with aligned brownish altered amphibole.  
Comments: Nos. 881 and 886 are most probably diorite di Malanaggio, originally from Malanaggio, Val Chisone, Piedmont, Italy, and now obtained from the nearby commune of San Germano Chisone. Note that cavities in biotite are coloured by orange-brown polishing compound.  
Further information:

Corsi's classification: Class 16. Granites; ii. Italian granites  
Corsi's text: 214.33 Granito delle Alpi  

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