Corsi Collection of Decorative Stones

view of stone 555

Corsi 555, approx. 145 x 73 x 40 mm, © Oxford University Museum of Natural History

OUMNH Number: 555  
Name and quarry location: Arenaria di Siena, from Siena, Tuscany, Italy  
Geological description: Bioclastic limestone with microspar matrix. It has white algal grains and spar-filled anastomising vugs, probably incipient birds-eyes.  
Comments: Like most of Corsi's 'arenarie' (sandstones), this is a calcareous rock. The locality has not been confirmed.  
Further information:

Corsi's classification: Class 4. Sandstones  
Corsi's text: 137.3 Arenaria di Siena  

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