Corsi Collection of Decorative Stones

view of stone 817

Corsi 817, approx. 145 x 73 x 40 mm, © Oxford University Museum of Natural History

OUMNH Number: 817  
Name and quarry location: Granito bigio, granito a morviglione, porfido bigio di Sibilio, from the area between Frejus and Dramont, Esterel Mountains, Var, France  
Geological description: Porphyritic dacite, with large phenocrysts of white compositionally zoned plagioclase feldspars, and green-black zoned amphibole (altered hornblende), with a little biotite.  
Comments: 'Morviglione' is an old Italian name for pox or measles.  
References: Antonelli (2002b) 274-275; Borghini (1997) 219, 270-271; Corsi (1845) 205; Lazzarini (1998); Mielsch (1985) 66; Price (2007) 210-211  
Further information:

Corsi's classification: Class 16. Granites; i. Antique granite  
Corsi's text: 204.5 Granito antico. Marmor Syenite. Marmo Sienite... [trovata] presso la città di Siene sul confine fra Egitto, e l'Etiopia... Pyrrhopoecilon... Psaronion...Aethiopicum perchè... era Siene sul confine dell' Etiopia.  

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