Table 2
d-spaces of strongest diffraction peaks for representative Mg-silicate minerals.
| Mineral | d (Å) | hkl-index |
|
|
||
| Cristobalite | 4.0474 | 101 |
| Quartz | 3.3436 | 101 |
|
|
||
| Forsterite | 2.4557 | 112 |
|
|
||
| Monoclinic | ||
| Enstatite | 2.9808 | 22-1 |
|
|
||
| Orthorhombic | ||
| Enstatite 1 | 2.4338 | 112 |
| Enstatite 2 | 3.1486 | 221 |
| Enstatite 3 | 3.0745 | 121 |
|
|
||
| Antigorite | 3.6522 | 004 |
| Lizardite | 2.5001 | 111 |
Notes. Cristobalite and quartz (SiO2): network formers; forsterite (Mg2SiO4): isolated tetrahedra; enstatite (MgSiO3): chain forming; serpentine minerals antigorite and lizardite (Mg3Si2O5(OH)4): sheet forming.
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