Table 2 X-ray fluorescence average compositions (wt.%) in the oxide representation (the total is 100 wt.%) considering the main detected elements in the burnt (B) and mud (S1-1a, S1-1b, S1–2) bricks, raw sand (S), raw soils (low- and high- depth) from Romula.

From: Mud and burnt Roman bricks from Romula

Sample

Main detected elements recalculated as simple (arbitrary taken) oxides

Trace elements

L.O.I (%)

SiO2 (%)

Al2O3 (%)

Fe2O3 (%)

K2O (%)

TiO2 (%)

MgO (%)

CaO (%)

Na2O (%)

P2O5 (%)

MnO (%)

BaO (%)

Zr (ppm)

Sr (ppm)

Zn (ppm)

P8R

62.3 ± 0.006

16.7 ± 0.5

10.3 ± 0.6

4.18 ± 0.19

1.64 ± 0.12

1.59 ± 0.06

2.12 ± 0.18

0.472 ± 0.2

0.155 ± 0.02

0.178 ± 0.03

0.156 ± 0.05

1120 ± 112

338 ± 22

291 ± 70

4.1

P3R

63.6 ± 0.001

16.3 ± 0.4

9.43 ± 0.4

4.73 ± 0.01

1.54 ± 0.05

1.52 ± 0.01

1.79 ± 0.08

0.596 ± 0.13

0

0.23 ± 0.03

0.126 ± 0.05

924 ± 110

343 ± 21

200 ± 19

3.8

PCT9R

62.6 ± 0.001

16.6 ± 0.2

10 ± 0.2

4.2 ± 0.09

1.64 ± 0.03

1.53 ± 0.06

2.29 ± 0.14

0.572 ± 0.07

0.177 ± 0.01

0.196 ± 0.001

0

1030 ± 300

300 ± 11

209 ± 15

4.5

PCT9Rp

62.8 ± 0.01

16.3 ± 0.1

9.94 ± 0.4

4.18 ± 0.18

1.67 ± 0.04

1.6 ± 0.12

2.41 ± 0.11

0.507 ± 0.15

0.202 ± 0.015

0.2 ± 0.02

0

1010 ± 200

360 ± 10

221 ± 5

4.5

B

61.35 ± 0.005

14.85 ± 0.15

7.035 ± 0.1

3.96 ± 0.08

1.195 ± 0.05

2.02 ± 0.02

7.85 ± 0.01

0.892 ± 0.06

0.53 ± 0.001

0.127 ± 0.005

0

790 ± 20

384 ± 16

195 ± 22

0.9

S1-1a

58.3 ± 0.001

12.1 ± 0.21

6.53 ± 0.15

3.37 ± 0.03

1.08 ± 0.1

1.47 ± 0.03

15.9 ± 0.06

0.436 ± 0.002

0.505 ± 0.001

0.0845 ± 0.003

0

585 ± 14

713 ± 23

175 ± 31

0.8

S1-1b

56.5 ± 0.002

11.5 ± 0.23

6.5 ± 0.2

3.11 ± 0.02

1.04 ± 0.05

1.44 ± 0.05

18.9 ± 0.07

0.379 ± 0.08

0.371 ± 0.02

0.137 ± 0.007

0

552 ± 17

759 ± 19

189 ± 10

0.9

S1-2

62.2 ± 0.002

13.7 ± 0.16

7.85 ± 0.1

4.32 ± 0.01

1.46 ± 0.09

1.8 ± 0.07

6.95 ± 0.13

0.534 ± 0.06

0.789 ± 0.01

0.159 ± 0.003

0.0804 ± 0.002

933 ± 11

570 ± 5

301 ± 17

1.1

DS1-2.5m

56.6 ± 0.005

14.8 ± 0.45

9.81 ± 0.5

4.03 ± 0.1

1.49 ± 0.08

1.61 ± 0.03

10.5 ± 0.1

0.467 ± 0.03

0.262 ± 0.02

0.189 ± 0.04

0.132 ± 0.06

999 ± 7

463 ± 13

280 ± 6

0.5

DS2-3m

40.4 ± 0.006

9.85 ± 0.3

7.33 ± 0.1

2.88 ± 0.07

1.13 ± 0.08

2.16 ± 0.02

35.2 ± 0.12

0.304 ± 0.1

0.252 ± 0.01

0.16 ± 0.02

0.159 ± 0.07

663 ± 23

1010 ± 100

162 ± 11

0.1

S

76 ± 0.001

11.5 ± 0.2

3.24 ± 0.4

3.35 ± 0.02

0.686 ± 0.09

1.09 ± 0.01

3.36 ± 0.1

0.497 ± 0.007

0

0.0667 ± 0.002

0

241 ± 15

256 ± 8

0

2.1

  1. Standard deviations from the average values for three measurements on each sample are given. L.O.I values were estimated after heating the samples at 100 °C.
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