Corsi Collection of Decorative Stones

view of stone 810

Corsi 810, approx. 145 x 73 x 40 mm, © Oxford University Museum of Natural History

OUMNH Number: 810  
Name and quarry location: Porfido di Cecina, from Cecina, Livorno, Tuscany, Italy  
Geological description: Porphyritic andesite. Subhedral phenocrysts up to 20mm of zoned plagioclase in dark grey groundmass of plagioclase, pyroxene and ?amphibole. Minor micaceous veining.  
Further information:

Corsi's classification: Class 15. Porphyry; Species 2. Porphyries (Lacedaemon); ii. Italian 'serpentine' porphyry  
Corsi's text: 201.1 Serpentino di Cecina in Toscana  

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