OUMNH Number: | 560 |
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Name and quarry location: | Lavagna antica, locality unknown |
Geological description: | Fine-grained siliceous rock with a few carbonate grains; The aggregates of orange-brown crystals are almost certainly relics of pyrite crystals; elsewhere, the pyrite is visible. Slate is not confirmed. |
Comments: | This stone is not believed to be from Egypt. |
References: | Borghini (1997) 238; Corsi (1845) 165 |
Further information: |
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Corsi's classification: | Class 5. Slates |
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Corsi's text: | 139.1 Marmor Thebaicum. Lavagna antica... si trova negli scavi di Roma. Tebaico... e trovarsi in una parte d'Africa ascritta all' Egitto |