Corsi Collection of Decorative Stones

view of stone 512

Corsi 512, approx. 145 x 73 x 40 mm, © Oxford University Museum of Natural History

OUMNH Number: 512  
Name and quarry location: Argilla antica, locality unknown  
Geological description: Most probably a calcareous mudstone, it contains planktonic forams.  
Comments: This sample is a composite of several pieces held with a green cement. The green edge is the original colour and is the part of the stone that was protected by a metal clip from the 1960s to 1990s in the old Corsi storage cabinet. The reddish colouration seems to result from exposure to light or atmospheric conditions in Oxford.  
Further information:

Corsi's classification: Class 1. Marbles; Section 6. Argillaceous stones; i. Common clays  
Corsi's text: 129.13 Argilla antica... trovata nella villa di Cicerone sopra Frascati  

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