Corsi Collection of Decorative Stones

view of stone 67

Corsi 67, approx. 145 x 73 x 40 mm, © Oxford University Museum of Natural History

OUMNH Number: 67  
Name and quarry location: Marmo rosso di Prodo, from Prodo, or more probably Colonnetta di Prodo, Terni, Umbria, Italy  
Geological description: Limestone. A fossiliferous biomicrite crowded with planktonic forams and calcispheres. Disrupted banding marks a layer that has transported and re-sedimented, probably the result of slumping. Fractures are calcite-filled.  
Comments: This dark pink to red limestone is most probably the marmo di Prodo quarried at Colonnetta di Prodo, a few kilometres south west of Prodo, and used in the marble decoration of the Duomo of Orvieto.  
Further information:

Corsi's classification: Class 1. Marbles; Section 1. Monochrome marbles; Species 5. Red marbles  
Corsi's text: 39.7 Rosso di Prodo presso Orvieto  

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