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Test review for evaluation (1)

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Three distinct doublets of Fe2+ were distinguished in spectra of sphalerite solid solution Zn1-x FexS and their HFS parameters and relative intensities were evaluated. The original N-procedure was used, what permitted to solve the problem of close spectral components. The N-procedure improves the spectral resolution at the expense of signal-to-noise ratio and the fitting results are characterized by lower global correlation factors (up to 3-10 times), when the N-transformed spectra are used. 1


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The relative intensities of partial spectral doublets A, B and C, corresponding to three distinct values of q.s., could be referred to three definite atomic configurations Fe - (Fe n Zn 12-n ), just if the Fe2+ and Zn ions are distributed random. When one takes into account, that the symmetric pairs of Zn ions do not disturb the electric field gradient at the central Fe2+ ion, the C-doublet is to be referred to neff = 0, B doublet - to neff = 1 and A doublet to - neff = 2 or more.

The values of q.s. of doublets A, B and C are changing with composition a little, the isomer shift has the constant value for all doublets and does not depend on the composition. The data presented, at first prove the random distribution of Fe2+ and Zn2+ ions in the sphalerite solid solution FexZn1-xS, at least up to x = 0.32. 1



68 () :

13

147_b

Ge-Pyroxene (Ge-Acmite)

NaFeGe2O6

2

10

110b

Ge-Pyroxene (Ge-Hedenbergite)

Ca0.8Fe0.2FeGe2O6

3

11

110nb

Ge-Pyroxene (Ge-Hedenbergite)

Ca0.8Fe0.2FeGe2O6

6

1

1486-

Ge-Pyroxene (Ge-Hedenbergite)

Ca0.8Fe0.2FeGe2O6

6

15

167-1

Pyroxene (Acmite)

NaFeSi2O6

5

14

167_1

Pyroxene (Acmite)

NaFeSi2O6

5

32

MAk

Pyroxene (Acmite)

NaFeSi2O6

8

34

MakT

Pyroxene (Acmite)

NaFeSi2O6

8

49

MAkT

Pyroxene (Acmite)

{Na.65Ca.34}[Fe3+.64Fe2+.11Mg.19Al.04Ti.01]Si1.98Al.01O6

4

58

MAe2T_1

Pyroxene (Aegirine)

Na1.06Ca0.06Mg0.04Fe1.01Si1.91O6

5

59

MAe2T_2

Pyroxene (Aegirine)

Na1.06Ca0.06Mg0.04Fe1.01Si1.91O6

5

61

MAe2T_3

Pyroxene (Aegirine)

Na1.06Ca0.06Mg0.04Fe1.01Si1.91O6

5

73

MCf

Pyroxene (Clinoferrosilite)

FeSiO3

3

65

MCpT_a

Pyroxene (Enstatite-Ferrosilite)

FexMg1-xSiO3

3

66

MCpT_b

Pyroxene (Enstatite-Ferrosilite)

FexMg1-xSiO3

3

67

MCpT_c

Pyroxene (Enstatite-Ferrosilite)

FexMg1-xSiO3

3

68

MCpT_d

Pyroxene (Enstatite-Ferrosilite)

FexMg1-xSiO3

3

69

MCpT_e

Pyroxene (Enstatite-Ferrosilite)

FexMg1-xSiO3

3

70

MCpT_f

Pyroxene (Enstatite-Ferrosilite)

FexMg1-xSiO3

3

71

MCpT_g

Pyroxene (Enstatite-Ferrosilite)

FexMg1-xSiO3

3

72

MCpT_h

Pyroxene (Enstatite-Ferrosilite)

FexMg1-xSiO3

3

64

MFTST

Pyroxene (Ferri-Tschermak's molecule subst. diopside)

[CaMgSi2O6]1-x [CaFe3+ [Fe3+Si]O6](x): x=0.759

4

77

MFTS_a

Pyroxene (Ferri-Tschermak's molecule subst. diopside)

[CaMgSi2O6]1-x [CaFe3+[Fe3+Si]O6](x)

4

78

MFTS_b

Pyroxene (Ferri-Tschermak's molecule subst. diopside)

(1-x)(CaMgSi2O6 x (CaFe3+[Fe3+Si]O6

4

79

MFTS_c

Pyroxene (Ferri-Tschermak's molecule subst. diopside)

(1-x)(CaMgSi2O6x(CaFe3+[Fe3+Si]O6

4

80

MFTS_d

Pyroxene (Ferri-Tschermak's molecule subst. diopside)

(1-x)(CaMgSi2O6x(CaFe3+[Fe3+Si]O6

4

81

MFTS_e

Pyroxene (Ferri-Tschermak's molecule subst. diopside)

(1-x)(CaMgSi2O6x(CaFe3+[Fe3+Si]O6

4

82

MFTS_f

Pyroxene (Ferri-Tschermak's molecule subst. diopside)

(1-x)(CaMgSi2O6x(CaFe3+[Fe3+Si]O6

4

83

MFTS_g

Pyroxene (Ferri-Tschermak's molecule subst. diopside)

(1-x)(CaMgSi2O6x(CaFe3+[Fe3+Si]O6

4

12

Hd1

Pyroxene (Hedenbergite)

CaFeSi2O6

4

2

hd88

Pyroxene (Hedenbergite)

CaFeSi2O6

3

53

MHd2_P

Pyroxene (Hedenbergite)

CaFeSi2O6

4

54

MHd3

Pyroxene (Hedenbergite)

Ca[Fe0.8Mg0.2]Si2O6

6

48

MHd4_P

Pyroxene (Hedenbergite)

Ca[Fe0.6Mg0.4]Si2O6

6

57

MHd52_T

Pyroxene (Hedenbergite)

Ca0.96Mn0.02Fe0.66Mg0.31Al0.06Si1.99O6.02

5

51

MHd6

Pyroxene (Hedenbergite)

Ca.96Al.01Na.01[Fe.53Mg.43]Si2O6

1

52

MHdT

Pyroxene (Hedenbergite)

{Ca0.99}[Fe2+0.84Mg0.12Mn0.04][Si2.00]O6

1

56

MHd_T

Pyroxene (Hedenbergite)

Ca0.97Mn0.17Fe0.79Mg0.06Al0.01Si2.00O6.01

3

22

MLa

Pyroxene (Li-Acmite)

LiFeSi2O6

1

25

MLa

Pyroxene (Li-Acmite)

LiFeSi2O6

1

94

MOp4TC_a

Pyroxene (Orthoenstatite - Orthoferrosilite)

FexMg2-xSi2O6

3

95

MOp4TC_b

Pyroxene (Orthoenstatite - Orthoferrosilite)

FexMg2-xSi2O6

3

96

MOp4TC_c

Pyroxene (Orthoenstatite - Orthoferrosilite)

FexMg2-xSi2O6

3

97

MOp4TC_d

Pyroxene (Orthoenstatite - Orthoferrosilite)

FexMg2-xSi2O6

3

98

MOp4TC_e

Pyroxene (Orthoenstatite - Orthoferrosilite)

FexMg2-xSi2O6

3

99

MOp4TC_f

Pyroxene (Orthoenstatite - Orthoferrosilite)

FexMg2-xSi2O6

3

100

MOp4TC_g

Pyroxene (Orthoenstatite - Orthoferrosilite)

FexMg2-xSi2O6

3

101

MOp4TC_h

Pyroxene (Orthoenstatite - Orthoferrosilite)

FexMg2-xSi2O6

3

102

MOp4TC_k

Pyroxene (Orthoenstatite - Orthoferrosilite)

FexMg2-xSi2O6

3

35

MOp

Pyroxene (Orthopyroxene)

Mg0.9Fe0.1SiO3

3

55

MOp09_T

Pyroxene (Orthopyroxene)

Fe0.87Mg0.13SiO3

9

37

MOp1T

Pyroxene (Orthopyroxene)

FeSiO3

3

38

MOp1T

Pyroxene (Orthopyroxene)

FeSiO3

3

39

MOp1T

Pyroxene (Orthopyroxene)

FeSiO3

3

87

MOp2T_a

Pyroxene (Orthopyroxene)

Fe0.80Mg0.20SiO3

3

88

MOp2T_b

Pyroxene (Orthopyroxene)

Fe0.80Mg0.20SiO3

3

89

MOp2T_c

Pyroxene (Orthopyroxene)

Fe0.80Mg0.20SiO3

3

90

MOp2T_d

Pyroxene (Orthopyroxene)

Fe0.80Mg0.20SiO3

3

91

MOp2T_e

Pyroxene (Orthopyroxene)

Fe0.80Mg0.20SiO3

3

92

MOp2T_f

Pyroxene (Orthopyroxene)

Fe0.80Mg0.20SiO3

3

93

MOp2_g

Pyroxene (Orthopyroxene)

Fe0.80Mg0.20SiO3

3

74

MOp3T_a

Pyroxene (Orthopyroxene)

Fe0.51Mg0.49SiO3

3

75

MOp3T_b

Pyroxene (Orthopyroxene)

Fe0.51Mg0.49SiO3

3

84

MOp3T_d

Pyroxene (Orthopyroxene)

Fe0.51Mg0.49SiO3

3

85

MOp3T_e

Pyroxene (Orthopyroxene)

Fe0.51Mg0.49SiO3

3

86

MOp3T_f

Pyroxene (Orthopyroxene)

Fe0.51Mg0.49SiO3

3

76

MOp4T_c

Pyroxene (Orthopyroxene)

Fe0.51Mg0.49SiO3

3

36

MOpT

Pyroxene (Orthopyroxene)

Mg0.9Fe0.1SiO3

3