Corsi Collection of Decorative Stones

view of stone 509

Corsi 509, approx. 145 x 73 x 40 mm, © Oxford University Museum of Natural History

OUMNH Number: 509  
Name and quarry location: 'Argilla di Terni', from Terni, Umbria, Italy; or may be Tivoli, Roma, Lazio, Italy  
Geological description: Burrowed micrite/microsparite limestone with abundant calcispheres and conspicuous dissolution fabrics (dark seams).  
Comments: Perhaps from Terni, Umbria, Italy, where Jervis (1889) says both yellowish-white limestone and travertine have been quarried . However the specimen has 'M.Ven.' [marmo venato] written in ink on the reverse. The other two specimens marked this way are nos. 504 and 505 from Tivoli, Lazio, Italy. It may be coincidence or a cause of the confusion that both Tivoli and Terni are better known for their travertine deposits.  
References: Jervis (1889) 345-346  
Further information:

Corsi's classification: Class 1. Marbles; Section 6. Argillaceous stones; i. Common clays  
Corsi's text: 128.10 Argilla di Terni  

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