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Generation history of carbonado inferred from photoluminescence ...
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Generation history of carbonado inferred from photoluminescence ...
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Comments from Robert F. Dymek,
Frank
Notari, and one anonymous reviewer ... De, S.,
Heaney
, P.J., Fei, Y., and Vicenzi, E.P. (2004) Microstructural study of.
δ
×
δ
(a)
(a)
Intensity (arbitrary unit)
(b)
(c)
300K
(d) (e)
(f)
120K
500 500
550
600
650
Wavelength (nm)
550 600 Wavelength (nm)
650
(b) 300 K
120 K
500 510 520 Wavelength (nm)
530 300 K
δ TABLE 1. Sample S7-0023 O23-002 O22-007 O22-001 O22-012 J8-0089
Chemical composition and carbon isotope composition of Central African carbonado samples Group A A A B B B
C (%) 94.5 95.4 92.0 98.3 96.5 90.7
H (%) 0.67 0.63 0.73 0.63 0.65 0.83
δ13C (‰) –22.6(1) –24.1(1) –23.7(2) –25.8(3) –27.6(3) –26.5(1)
120 K 500
550
600
650
Wavelength (nm)
δ
30
Average = 3.80 nm Standard deviation = 0.54 nm
(a) Group-A
Number of Analysis
25 20 15 10 5 0
30
2.0
2.5
3.0
(b) Group-B
3.5
4.0
FWHM (nm)
4.5
5.0
5.5
6.0
Average = 2.80 nm
25
Number of Analysis
Standard deviation = 0.38 nm
20 15 10 5 0
2.0
2.5
3.0
3.5
4.0
FWHM (nm)
4.5
5.0
5.5
6.0
δ
δ δ δ δ
δ
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