Obsidian use in the mosaic of the St. Juvenal church, Narni (Italy): Chemical characterization and origin

被引：5
作者：
Avino P. [1 ]
Moioli P. [2 ]
Rosada A. [3 ]
Seccaroni C. [2 ]
机构：
[1] DIPIA, INAIL settore Ricerca, Certificazione e Verifica, 00184, Rome
[2] UTMAT, ENEA, 00123, Rome
[3] UTFISST CATNUC, ENEA, 00123, Rome
来源：
Heritage Science | / 1卷 / 1期
关键词：
INAA; Medieval glass; Mosaic; Obsidian; XRF;
D O I：
10.1186/2050-7445-1-17
中图分类号：
学科分类号：
摘要：
Tesserae from the mosaic on the front of the San Giovenale chapel inside the Narni Cathedral were analyzed through non-destructive XRF analysis for the characterization of both colouring matters and opacifiers of the glass matrix. Subsequently, the concentration of the elements present at trace levels (μg g-1) was determined by means of Instrumental Neutron Activation Analysis (INAA) for comparisons with obsidians of known provenance and well-studied micro-elemental composition, in order to identify the geographical origin of the obsidian used in this Middle Ages mosaic. The main result is that the black tesserae were made with obsidian fragments coming from the Sardinia deposits (probably, Arci Mountain site C). © 2013 Avino et al.; licensee Chemistry Central Ltd.
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