Corsi 553, approx. 145 x 73 x 40 mm, © Oxford University Museum of Natural History
| OUMNH Number: | 553 |
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| Name and quarry location: | Pietra rota degli Appennini, from the Apennines, Italy |
| Geological description: | Quartzite with limonitic cement. |
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| Corsi's classification: | Class 4. Sandstones |
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| Corsi's text: | 137.1 Pietra rota degli Appennini |