French Medieval Glass Composition

Chemical analysis (electron probe X-ray micro analysis) of 398 medieval glass vessels found in France.

Usage

verre

Format

A data.frame with 398 observations and 17 variables:

Site

factor: CNL (Cour Napoléon, Louvre), ORL (Orléans), POI (Poitiers), ANG (Angers), OMO (Omonville, Seine Maritime), ROU (Rouen), MEA (Meaux), CHL (Châlons-sur-Marne), PAI (Pairu, Argonne, Ardennes), BER (Bercettes, Argonne, Ardennes), BIN (Binois, Argonne, Ardennes), CHE (Chevrie, Argonne, Ardennes), MIT (Mitte, Argonne, Ardennes), MET (Metz), CHM (Chambaran).

Sample

character: sample code.

Type

character: typology.

Age

character: century.

Periode

factor: I (9th-12th century), II (13th-first half of the 15th century), III (end of the 15th to end of the 16th century), IV (end of 16th to end of the 17th century).

Tint

factor: ? (unknown), B (blue), CL (colourless), CLg (colourless – greyish tint), PB (pale blue; PGE: pale greenish), PGE-B (pale green-blue or blue-green), PGY-B (pale grey-blue), R (opaque red), W (opaque white), *av (added aventurine spots), *bl (added thread blue or blue spots), *r (added thread opaque red or opaque red spots), *w (added thread opaque white).

Na2O

numeric: Na2O content (percent).

CaO

numeric: CaO content (percent).

K2O

numeric: K2O content (percent).

MgO

numeric: MgO content (percent).

P2O5

numeric: P2O5 content (percent).

SiO2

numeric: SiO2 content (percent).

Al2O3

numeric: Al2O3 content (percent).

FeO

numeric: FeO content (percent).

MnO

numeric: MnO content (percent).

Cl

numeric: Cl content (percent).

Reference

character: site reference.

References

Barrera J., Velde B. (1989). A study of french medieval glass composition. Archéologie médiévale, 19, 81-130. doi:10.3406/arcme.1989.953 .

See also

Other chemical data: bronze, kommos

Examples

plot(
  x = verre$Na2O,
  y = verre$CaO / (verre$CaO + verre$K2O),
  type = "p",
  xlab = expression("Na"[2]*"O (%)"),
  ylab = expression("CaO"/"(CaO"+"K"[2]*"O)")
)