Corsi Collection of Decorative Stones

view of stone 655

Corsi 655, approx. 145 x 73 x 40 mm, © Oxford University Museum of Natural History

OUMNH Number: 655  
Name and quarry location: Pietra dell'Etna, from Mt. Etna, Catania, Sicily, Italy  
Geological description: Olivine basalt/trachybasalt. Dark grey porphyritic lava with phenocrysts of plagioclase, olivine and pyroxene (all variably altered) in a fine-grained equigranular matrix. Rounded vesicles have zoned infills of hematite and calcite.  
Further information:

Corsi's classification: Class 8. Volcanic stones; ii. Stones from Etna  
Corsi's text: 156.11 Pietra dell'Etna  

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