Corsi 766, approx. 145 x 73 x 40 mm, © Oxford University Museum of Natural History
| OUMNH Number: | 766 |
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| Name and quarry location: | Sicilian jasper, diaspro di San Stefano di Quisquina, from Santo Stefano Quisquina, Agrigento, Sicily, Italy |
| Geological description: | Silicified polymict limestone conglomerate with scattered pyrite and rhombohedral ?dolomite crystals, and some residual fossils. Matrix is part chalcedonic, part colourless quartz. Speckled green areas are filler. |
| Comments: | Santo Stefano di Bivona is now called Santo Stefano Quisquina, and is near Bivona, Province of Girgenti, Sicily, Italy. Tata (1772) describes a green jasper with some white and other chalcedony patches from a place called 'Portella della Mola in Contrada di S, Stefano detto di Bivona'. |
| References: | Jervis (1881) 193-318; Jervis (1889) 449-482; Montana & Briuccia (1998); Price (2007) 246-247; Schmidt (2002); Tata (1772) 19-20 |
| Further information: |
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| Corsi's classification: | Class 14. Quartz and its varieties; Species 6. Jasper; ii. Italian jaspers |
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| Corsi's text: | 189.19 Diaspro di S.Stefano di Bivona... di Sicilia |