Table 2 d-spacings and lattice parameters for naturally occurring jeffbenite from reference 5 and glass-ceramic compositions containing jeffbenite.

From: Formation of the high pressure jeffbenite phase from glass at ambient pressure

h k l

1

2

3

4

5

6

7

jeffbenite, [5]

1 0 1

6.1862

6.1816

6.1951

6.2269

6.1885

6.2084

6.1742

6.104

2 0 2

3.092

3.090

3.098

3.101

3.093

3.104

3.086

3.069

2 1 1

 

2.901

2.906

2.911

2.904

2.914

2.897

2.881

2 0 4

2.667

2.665

2.674

2.675

2.668

2.677

2.662

2.647

2 0 6

2.237

2.235

2.240

2.243

2.238

 

2.232

2.22

2 2 4

2.072

2.070

2.075

2.078

2.072

 

2.068

2.056

3 2 5

    

1.638

1.643

 

1.625

a (A)

 

6.6

 

6.6

 

6.6

 

6.3

c (A)

 

18.2

 

18.3

 

18.3

 

18.2

V (a^3)

 

787.2

 

802.0

 

800.3

 

773.4

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