Table 1 Quantitative TEM–EDS analyses of the phases in the FIB section

From: Impact-induced high-temperature formation of metallic copper and bornite in Chang’e-6 lunar soils

Phases

Fe (at%)

Cu (at%)

S (at%)

(Fe + Cu)/S

Coating

16.8

55.3

27.9

2.58

Cu0-free zone matrix

47.2

9.85

43.0

1.33

Cu0-rich zone matrix

42.24

14.80

43.0

1.33

Pristine troilite

49.52

10.67

39.81

1.51

Metallic copper

1.84

96.6

1.57

 

Metallic iron

86.0

11.5

2.46

 
  1. The TEM–EDS data have been normalized to 100%. The detectable Cu present in the metallic iron and pristine troilite is interpreted to result from contamination by the Cu support grid during the EDS analyses.
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