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| Click on a subgroup to view further divisions. | ||
| 70.1 | Column or Tube Structures with columnar silicate units | |
| 70.2 | Column or Tube Structures with Si2O7 dimers | |
| 70.3 | Column or Tube Structures with balo-silicates | |
| 70.4 | Column or Tube Structures with linked chains forming cages | |
| 70.5 | Column or Tube Structures with chains linked by Be | |
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