Corsi Collection of Decorative Stones

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view of stone 666

Corsi 666, approx. 145 x 73 x 40 mm, © Oxford University Museum of Natural History

OUMNH Number: 666  
Name and quarry location: Pietra dell'Etna, from Mt. Etna, Catania, Sicily, Italy  
Geological description: Altered (?phonolitic) tephrite. A porphyritic rock with carbonate-replaced feldspathoid crystals. Smaller subhedral crystals after pyroxene speckle the groundmass, which is rich in white carbonate and pink felsic material.  
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Corsi's classification: Class 8. Volcanic stones; ii. Stones from Etna  
Corsi's text: 157.22 Pietra dell'Etna  

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Funded by Esmée Fairbairn Foundation Oxford University Museum of Natural History University of Oxford