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Scheme: ABCD EFG Pencil.png
Collection: EFG MineralogicalUnit Pencil.png
The import namespace "abcd-efg" is unknown. Please ensure that OWL import details are available via MediaWiki:Smw import abcd-efg
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Twinning (also /MineralogicalUnit/CrystalForm/Twinning): Free text to describe any twinning features dispalyed by a mineral unit. Types include interpenetrant, rotation and geniculate.

Constraints in the context of ABCD EFG: