Corsi Collection of Decorative Stones

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view of stone 652

Corsi 652, approx. 145 x 73 x 40 mm, © Oxford University Museum of Natural History

OUMNH Number: 652  
Name and quarry location: Pietra dell'Etna, from Mt. Etna, Catania, Sicily, Italy  
Geological description: An altered ignimbrite. A poorly sorted breccia with clasts of rusty-brown medium-grained crystalline rock, discrete crystals of altered feldspar, and ferromagnesian minerals, all in a very fine-grained hematite-bearing groundmass. A faint preferred orientation of the clasts is evident.  
Comments: No.648, another ignimbrite, is very similar but a bit lighter in colour.  
References:  
Further information:
 


Corsi's classification: Class 8. Volcanic stones; ii. Stones from Etna  
Corsi's text: 156.8 Pietra dell'Etna  

Full entry in English

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