Table 2 Summary of materials found in porcelain shards from two Portuguese shipwrecks
Portuguese carrack | Sample | Components |
|---|---|---|
Santa Maria Madre de Deus (1643) | Shard #1 | Feldspar, anatase, β-wollastonite, ilmenite or Ilm-Hemss, calcite (data not shown), luminescence due to REE |
Shard #2 | α-Quartz, ilmenite or Ilm-Hemss, amorphous carbon, anatase, hematite | |
Shard #3 | Feldspar, anatase, β-wollastonite, luminescence due to REE | |
Shard #4 | Amorphous quartz, luminescent profile of glaze, α-quartz | |
Santo Espirito (1608) | Shard #5 | Anatase, amorphous quartz, luminescent profile of glaze, α-quartz |