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Table 2 Oxygen isotopic compositions of the COM-1 and Hongcheon monazites, measured by gas-source mass spectrometry with laser fluorination

From: COM-1 and Hongcheon: New monazite reference materials for the microspot analysis of oxygen isotopic composition

Sample

Date

Weight (mg)

Yield (%)

δ18OVSMOW (‰)

SD (n = 16)

COM-1

8-September-2021

3.92

91.0

6.66

0.02

COM-1

4-May-2022

3.49

93.5

6.60

0.02

COM-1

4-May-2022

3.76

95.4

6.76

0.02

Average

   

6.67

0.08

Hongcheon-1

18-March-2019

2.29

90.8

6.60

0.02

Hongcheon-2

14-March-2019

2.54

90.9

6.13

0.01

Hongcheon-2

14-March-2019

3.29

92.0

6.03

0.02

Average

   

6.08

0.07