Corsi Collection of Decorative Stones

view of stone 958

Corsi 958, approx. 145 x 73 x 40 mm, © Oxford University Museum of Natural History

OUMNH Number: 958  
Name and quarry location: Pietra paesina, from Civitavecchia, Rome, Lazio, Italy  
Geological description: Heavily fractured micritic limestone with abundant tiny bioclasts, stylolites and orange and white sparry calcite-filled fractures. Ferruginous staining is constrained by sealed microfractures giving the 'paesina' effect. There are minor dendrites of manganese oxides. It is almost certainly from the Cretaceous to Eocene Alberese Formation.  
Comments: This most probably comes from the Tolfa Mountains a few miles north of Civitavecchia, an occurrence of pietra paesina described by Civitelli in 1970. Pietra paesina has been found in the Monterano nature reserve.  
References: Civitelli et al (1970); Marko (2003); McBride (2003); Price (2007) 101-103  
Further information:

Corsi's classification: Class 1. Marbles; Section 6. Argillaceous stones; iii. Ruin marbles  
Corsi's text: 131.6/ S21.1 Paesina di Civitavecchia  

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