Corsi Collection of Decorative Stones

view of stone 775

Corsi 775, approx. 145 x 73 x 40 mm, © Oxford University Museum of Natural History

OUMNH Number: 775  
Name and quarry location: Sicilian jasper, diaspro di Cassaro, probably from Monte Cassero, Castronovo di Sicilia, Palermo, Sicily, Italy  
Geological description: A heavily fractured silicified limestone, yellow jaspery areas containing a few mollusc shells. Fractures are filled with colourless crystalline quartz. Reddish-brown veins contain filler.  
Comments: Jervis (1881; 212). describes a similar jasper from the Cassaro quarter of Palermo. However, Tata, (1772) refers to Cassaro as a locality in Castro nuovo (sic) for a dark green jasper with marks of white and dark yellow. That this is more likely the source of Corsi's specimens is confirmed by the presence of a number of very similar specimens in the Naturhistorisches Museum Wien labelled as coming from Riena. According to Tata, Riena is another location in Castronovo.  
References: Jervis (1881) 212; Jervis (1889) 449-482; Montana & Briuccia (1998) 32; Price (2007) 246-247; Schmidt (2002); Tata (1772) 23, 28. Other examples: Naturhistorisches Museum Wien ref: 775V: Ab7443, 7444, 7447.  
Further information:

Corsi's classification: Class 14. Quartz and its varieties; Species 6. Jasper; ii. Italian jaspers  
Corsi's text: 190.28 Diaspro del Cassaro... di Sicilia  

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