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Table 2 Mean values of oxide percentage and their standard deviation (in brackets) obtained by SEM-EDX in in samples 1 and 2 of funerary pigments found in the Rio Azul tomb

From: Funerary colors in Pre-classical Maya culture: the red pigment in the 19th tomb of Rio Azul (Peten, Guatemala)

Sample Ref.

(oxide wt %)

1

1Fa

2

Na2O

11 (2)

17.9 (0.9)

< 0.01

MgO

0.67 (0.11)

4.74 (0.18)

< 0.01

Al2O3

0.46 (0.12)

1.4 (0.9)

0.9 (0.9)

SiO2

1.6 (0.3)

71 (1)

8 (1)

K2O

0.2 (0.2)

0.30 (0.05)

< 0.01

CaO

77 (2)

4.5 (0.5)

19.97 (0.16)

TiO2

< 0.01

FeO

2.1 (0.8)

0.20 (0.01)

15.62 (0.03)

SO3

1.9 (0.8)

13.96 (0.08)

Cl

< 0.01

P2O5

0.3 (0.3)

<0.01

2.3 (2)

HgO

3 (2)

34.0 (0.4)

PbO

< 0.01

< 0.01

MnO

1.4 (0.6)

< 0.01

As2O3

< 0.01

3.65 (0.18)

  1. a1F: glassy fragment in sample 1