O

Mg

Al

Si

Ca

Cr

Mn

①_Merwinite

54.18

7.14

0.30

16.09

21.86

0.10

0.33

②_Melilite

54.73

3.32

10.59

13.79

17.00

0

0.58

③_Larnite

55.85

1.82

0.25

15.76

26.15

0

0.18

④_Spinel

57.02

12.84

6.03

0.37

0.86

21.26

1.65