Beads excavated from Antsiraka Boira necropolis (Mayotte Island, 12th-13th centuries)
Colouring agents and glass matrix composition comparison with contemporary Southern Africa sites
Bibliographic Data
| ID | 12988152 |
|---|---|
| Authors | Noémi Fischbach (Sorbonne Université, corresponding author), Anh‐Tu Ngo (0000-0002-9225-6796, Sorbonne Université), Philippe Colomban (0000-0001-6099-5423, Sorbonne Université), Martial Pauly (Institut National des Langues et Civilisations Orientales) |
| Year | 2016 |
| Volume | 40 |
| Pages | 83-102 |
| Publication date | 2016-01-01 |
| Peer Reviewed | Yes |
| Open Access | Yes |
| Type | ARTICLE |
| Venue | ArchéoSciences (JOURNAL) |
| Journal identifiers | ISSN: 1960-1360 • E-ISSN: 2104-3728 |
| Publisher | OpenEdition (PUBLISHER) |
| DOI | 10.4000/archeosciences.4774 |
| OpenAlex | W2587140215 |
| Language | EN |
| Citations received | 6 |
| References cited | 49 |
About hundred out of three hundred colored beads excavated from the necropolis of Antsiraka Boira (AB), in Mayotte Island (12-13th c.) were classified according to Wood’s morphological criteria and studied with a portable Raman spectrometer (532nm). Based on the recorded spectra, 22 beads were identified as representative and further analyzed in the laboratory with High-Resolution Raman spectrometers, using wavelengths of 458, 633 and 785nm. Additional SEM-EDS analysis was carried out on the surface and, sometimes, the bead cross-section. It turns out that white beads are made of aragonite and that almost all other beads have a soda glass matrix. Pyrochlore (yellow), amber/“Fe-S” (black), manganese oxide (black), copper metal nanoparticles (red), and Cu2+ ions (turquoise) chromophores were identified. Some red, yellow, black and turquoise beads also show the signature of chromium-doped tin sphene that could therefore be used as a marker. Most beads from the AB site can be classified as “Indo-Pacific”, revealing a similarity with the contemporary South African site of K2 (close to Mapungubwe). However, some red and black beads are similar to molten ceramic beads from the Vohemar Islamic necropolis (13-17th century AD, Madagascar Island). The on-site Raman analysis appears sufficient for the identification of chromophores and glass types
Analytical Chemistry (journal · Aragonite · Archaeology · Bead · Calcite · Chromatography · Chromophore · Composite material · Geography · Metallurgy · Mineralogy · Optics · Oxide · Physics · Raman spectroscopy · Tin oxide · Archaeology and ancient environmental studies · Chemistry · Cultural Heritage Materials Analysis · Materials Science · Pacific and Southeast Asian Studies · Geology
L’archéométrie une discipline du passé ou un enjeu interdisciplinaire pour l’avenir
On-Site Raman Spectroscopic Study of Beads from the Necropolis of Vohemar, Northern Madagascar (>13th C.)
Characterization of Glass, Shell, and Fishbone Beads on Ibo Island (Northern Mozambique) in the Context of the Indian Ocean Trade
Le site funéraire d’Antsiraka Boira (Acoua, Grande Terre)
Glaçures et verres noirs du patrimoine
Glass Beads, Markers of Ancient Trade in Sub-Saharan Africa
Microbeam characterization of corning archeological reference glasses
Chemical composition and colouring agents of Roman mosaic and millefiori glass, studied by electron microprobe analysis and Raman microspectroscopy
On-site Raman identification and dating of ancient glasses
A Glass Bead Sequence for Southern Africa from the 8th to the 16th Century AD
Chemical Analysis of Glass Beads From Madagascar
Mineral soda alumina glass
Southern African glass beads
A Raman spectroscopic study of glass trade beads excavated at Mapungubwe hill and K2, two archaeological sites in southern Africa, raises questions about the last occupation date of the hill
A non-invasive study of Roman Age mosaic glass tesserae by means of Raman spectroscopy
The Cave of Hearths
The Trading of Ancient Glass Beads
Iron and Sulfur Related Colors in Ancient Glasses
Trade Wind Beads
Interconnections
Microstructure, composition and processing of 15th century Vietnamese porcelains and celadons
Towards refining the classification of glass trade beads imported into Southern Africa from the 8th to the 16th century AD
The glass beads of Kaitshàa and early Indian Ocean trade into the far interior of southern Africa
| Unique citing works | 6 |
|---|---|
| Citations per year | 0,75 |
| Citation span | 2018 - 2023 (6) |
| Citation velocity | historical |
| Highly cited | No |
| Citation types | Neutral: 6 |