Table 1 Summary of normative key of distinction for the four ceramic classes under examination and our sample
Type | Optical reconnaissance | Normative key |
|---|---|---|
Stonepaste | High presence of crushed glass | Qz > Alk-feld + clay minerals Alk-feld = clay minerals / Alk-feld + Clay minerals > Qz |
Earthenware | Clay | |
Protostonepaste | Low presence of glass crushed | Clay minerals > Qz + Alk-feld |
Porcelains | White, vitrified, translucent, and resonant | Alk-feld > Clay minerals / Alk-feld + Clay minerals < Qz |