Corsi 743, approx. 145 x 73 x 40 mm, © Oxford University Museum of Natural History
| OUMNH Number: | 743 |
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| Name and quarry location: | Diaspro antico, locality unknown |
| Geological description: | Siliciified limestone or ironstone rich in relic shells of microfossils, and crossed by many slender fractures filled with colourless quartz. Some stylolites are present. |
| Comments: | It is not known where this stone was quarried. |
| References: | Corsi (1845) 225-226 |
| Further information: |
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| Corsi's classification: | Class 14. Quartz and its varieties; Species 6. Jasper; i. Antique jaspers |
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| Corsi's text: | 186.1 Diaspro. Jaspis. Diaspro antico |