Table 2 Representative major and trace element compositions of the starting materials, experimental glasses, and RMGs

From: Experimental constraints on the sources of lithium-rich granites and pegmatites

 

Starting materials

 Fluid-absent melting experiments

RMGPs

Sample

FM1

ST19.03

Barr888

GAR 01

GAR 09

A2 F

RMGs

wt%

n = 10

n = 10

n = 12

n = 19

n = 11

n = 3

n = 127

SiO2

63.7 (4)

61.2 (3)

45.3 (9)

71 (1)

73.3 (7)

68.4 (3)

70 (2)

TiO2

0.82 (2)

0.94 (4)

1.99 (9)

0.14 (6)

0.13 (3)

0.29 (1)

b.d. to 0.02

Al2O3

17.1 (2)

18.6 (3)

35 (1)

12.7 (5)

12.7 (3)

14.7 (2)

16.4 (9)

FeO(t)

7.0 (2)

6.7 (1)

2.3 (2)

1.3 (4)

0.44 (6)

1.1 (1)

0.4 (2)

MgO

2.11 (6)

2.40 (6)

0.25 (3)

0.3 (1)

0.11 (3)

0.10 (1)

0.2 (2)

MnO

0.17 (3)

0.08 (3)

n.a.a

0.11 (3)

0.02 (2)

b.d.b

b.d. to 0.35

CaO

0.23 (2)

0.25 (2)

3.3 (1)

0.38 (6)

0.17 (1)

0.99 (2)

0.6 (6)

Na2O

1.01 (8)

2.05 (7)

1.29 (7)

1.9 (4)

2.8 (2)

1.2 (4)

4.3 (8)

K2O

3.89 (8)

3.67 (7)

2.3 (1)

5.6 (5)

5.2 (1)

6.2 (3)

3.3 (6)

ZnO

n.a.

n.a.

0.4 (1)

n.a.

0.04 (2)

0.0902 (6)

n.a.

P2O5

0.11 (4)

0.14 (3)

0.03 (2)

0.16 (8)

0.15 (5)

0.04 (2)

2 (1)

F

b.d.

b.d.

b.d.

0.06 (5)

0.2 (1)

0.46 (6)

2 (1)

Cl

0.02 (1)

0.010 (6)

n.a.

0.22 (3)

0.006 (4)

n.a.

n.a.

–(F,Cl) = O

0.005 (3)

0.002 (1)

b.d.

b.d. to 0.02

0.08 (5)

0.20 (3)

0.7 (5)

Total

96.1 (5)

96.0 (4)

92 (1)

94 (2)

95.0 (6)

93.2 (6)

98 (1)

ppm

n = 10

n = 10

n = 16

n = 13

n = 7

n = 8

n = 127

Li

193 (3)

102 (1)

800 (40)

470 (30)

180 (10)

1900 (80)

3000 (2000)

Rb

224 (2)

138 (2)

80 (4)

432 (6)

240 (20)

235 (8)

3000 (1000)

Nb

14.4 (2)

10.9 (3)

37 (2)

13 (2)

8 (2)

2.1 (9)

90 (30)

Cs

49.5 (5)

6.9 (1)

8.1 (0.3)

130 (20)

12.3 (5)

25 (2)

300 (200)

Ta

0.91 (6)

0.70 (5)

2.5 (1)

0.8 (3)

0.5 (1)

0.2 (1)

200 (100)

W

1.5 (2)

0.9 (1)

6.2 (4)

2 (1)

1.2 (5)

3 (1)

40 (30)

Bulk DLic

n.a.

n.a.

n.a.

0.15

0.22

0.22

n.a.

Bulk DRb

n.a.

n.a.

n.a.

0.34

0.37

0.004

n.a.

Bulk DNb

n.a.

n.a.

n.a.

1.84

1.95

2.29

n.a.

Bulk DCs

n.a.

n.a.

n.a.

0.22

0.29

0.004

n.a.

Bulk DTa

n.a.

n.a.

n.a.

2.05

2.30

4.01

n.a.

Bulk DW

n.a.

n.a.

n.a.

0.44

0.39

0.01

n.a.

ASId

n.a.

n.a.

n.a.

1.3 (1)

1.21 (4)

1.4 (1)

1.5 (2)

Melt Fraction

n.a.

n.a.

n.a.

18%

25%

34%

n.a.

  1. Detailed major and trace element compositions of glasses are reported in Table S8 in Supplementary Data 1. Composition of ‘PHP’ RMGs is taken from Linnen and Cuney5. Uncertainty is reported to the last digit(s) in the brackets as the standard deviation of the mean (1σm). ‘n’ denotes the number of analyses.
  2. an.a. = not analysed.
  3. bb.d. = below detection.
  4. cBulk partition coefficients are calculated using Eq. (6).
  5. dASI is calculated as the molar ratio of Al2O3/(Na2O + K2O + (CaO−⅓P2O5)).
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