Corsi Collection of Decorative Stones

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view of stone 663

Corsi 663, approx. 145 x 73 x 40 mm, © Oxford University Museum of Natural History

OUMNH Number: 663  
Name and quarry location: Pietra dell'Etna, from Mt. Etna, Catania, Sicily, Italy  
Geological description: Tephrite. A porphyritic rock with euhedral white megacrysts of leucite and subhedral dark green megacrysts of alkali pyroxene, in a very fine-grained groundmass of feldspar and ?feldspathoid set in pale brown matrix. A few yellow ?olivines are visible.  
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Corsi's classification: Class 8. Volcanic stones; ii. Stones from Etna  
Corsi's text: 157.19 Pietra dell'Etna  

Full entry in English

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