Corsi 819, approx. 145 x 73 x 40 mm, © Oxford University Museum of Natural History
| OUMNH Number: | 819 |
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| Name and quarry location: | Granito violetto, marmor Troadense, from Çigri Dâg, Ezine, Canakkale, Marmara; Turkey |
| Geological description: | Medium-grained quartz monzonite with large violet-grey megacrysts of potash feldspar in a groundmass of quartz, plagioclase, biotite and hornblende. |
| Comments: | This is believed to be a dark veriety of granito violetto, also known as granito Troadense or marmo Troadense. It was exported to Rome between the second and sixth centuries AD. |
| References: | Borghini (1997) 236-237; Lazzarini (2002c) 246; Mielsch (1985) 68, taf.23; Ponti (2002) 291-295; Price (2007) 219 |
| Further information: |
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| Corsi's classification: | Class 16. Granites; i. Antique granite |
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| Corsi's text: | 204.7 Granito antico. Marmor Syenite. Marmo Sienite... [trovata] presso la città di Siene sul confine fra Egitto, e l'Etiopia... Pyrrhopoecilon... Psaronion...Aethiopicum perchè... era Siene sul confine dell' Etiopia. |