Crystallographic and petrographic characterization of two architectural terracottas from the sanctuary of Marasà (Locri)

Autori

  • Virgilio Vecchio University of Messina - Dipartimento di Scienze Matematiche e Informatiche, Scienze Fisiche e Scienze della Terra (MIFT), Viale F. Stagno d’Alcontres, 31, 98166 Messina, Italy https://orcid.org/0000-0002-6114-2083
  • Luisa Saladino University of Palermo - Dipartimento di Scienze e Tecnologie Biologiche Chimiche e Farmaceutiche (STEBICEF), Viale delle Scienze pad.17, 90128 Palermo, Italy
  • Francesco Arnetta University of Palermo - Dipartimento di Scienze e Tecnologie Biologiche Chimiche e Farmaceutiche (STEBICEF), Viale delle Scienze pad.17, 90128 Palermo, Italy
  • Daniela Costanzo Museo Archeologico Nazionale di Reggio Calabria, Piazza De Nava, 26, 89100, Reggio di Calabria, Italy
  • Barbara Fazzari Museo Archeologico Nazionale di Reggio Calabria, Piazza De Nava, 26, 89100, Reggio di Calabria, Italy
  • Carmelo Malacrino Museo Archeologico Nazionale di Reggio Calabria, Piazza De Nava, 26, 89100, Reggio di Calabria, Italy
  • Viviana Mollica Nardo Istituto per i processi chimico-fsici (IPCF), V.le F. Stagno D’Alcontres, 37, 98158 Messina, Itay
  • Rosina Celeste Ponterio Istituto per i processi chimico-fsici (IPCF), V.le F. Stagno D’Alcontres, 37, 98158 Messina, Itay

DOI:

https://doi.org/10.1478/AAPP.103S2A3

Parole chiave:

architectural terracotta, glauconite, celadonite, berthierine, chlorite, tridymite, ceramic’s firing process.

Abstract

Two fragments of the terracotta revetment plaques of the Western Greek sanctuary of Marasà (Locri) stored up in the National Archaeological Museum of Reggio Calabria (Italy) were studied. One of them has chromatic and granulometric anomalies if compared with similar artefacts while the other has a strong chromatic variability. Polarized light microscopy and X ray powders diffractometry were used for petrographic and crystallographic characterization. The ceramic body of fnd MRC 7013 contains an unusually high quantity of rocky grains and the groundmass shows the green colours of clay minerals (glauconite, celadonite or berthierine) that is stable only at low temperatures. In fragment MRC 7043 three main areas differentiated by colour were identifed. The study confrmed crystallographic differences between the samples due to great temperature’s differences during the fring process.

Dowloads

Pubblicato

2025-12-12

Fascicolo

Vol 103, SUPPL NO 2 (2025): XII AIAr National Congress

Sezione

XII AIAr National Congress (19-21 April 2023; Messina, Italy)

Licenza

Creative Commons License
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