Property talk:P556

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crystal system
type of crystal for minerals and/or for crystal compounds
Descriptioncrystal system (Q898786) : Type of crystal for crystal coumpounds
Representscrystal system (Q898786)
Data typeItem
Template parameter"Système cristallin" in fr:modèle:Infobox chimie
Domainterm (note: this should be moved to the property statements)
Allowed values
According to this template: crystal system (Q898786) : cubic, hexagonal, trigonal, tetragonal, orthorhombic, monoclinic, triclinic, quasicrystal, amorphous solid
According to statements in the property:
triclinic crystal system (Q376927), monoclinic crystal system (Q624543), orthorhombic crystal system (Q648961), tetragonal crystal system (Q503601), trigonal crystal system (Q588274), hexagonal crystal system (Q663314), cubic crystal system (Q473227), quasicrystal (Q263214), amorphous solid (Q103382) or unknown
When possible, data should only be stored as statements
Examplesodium chloride (Q2314)cubic crystal system (Q473227)
shigaite (Q13112)trigonal crystal system (Q588274)
Tracking: usageCategory:Pages using Wikidata property P556 (Q55667405)
Proposal discussionProposal discussion
Current uses
Main statement5,463>99.9% of uses
Qualifier2<0.1% of uses
Search for values
[create Create a translatable help page (preferably in English) for this property to be included here]
Value type “crystal system (Q898786): This property should use items as value that contain property “instance of (P31)”. On these, the value for instance of (P31) should be an item that uses subclass of (P279) with value crystal system (Q898786) (or a subclass thereof). (Help)
List of this constraint violations: Database reports/Constraint violations/P556#Value type, hourly updated report, SPARQL
Single value: this property generally contains a single value. (Help)
Exceptions are possible as rare values may exist.
List of this constraint violations: Database reports/Constraint violations/P556#Single value, SPARQL
Citation needed: the property must have at least one reference (Help)
Exceptions are possible as rare values may exist.
List of this constraint violations: Database reports/Constraint violations/P556#citation needed

Specifying more specific crystal systemsEdit

Would this property be the right to use for noting the crystal structure of metals? For example copper (Q753)face-centered cubic (Q3006714) (also making face-centered cubic (Q3006714) a subclass of cubic crystal system (Q473227). I think it would also make sense to make the relax the condition be subclass of crystal system (Q898786) regardless. Belteshassar (talk) 19:45, 1 June 2020 (UTC)

You have crystal system, point group, space group and cell parameters. See albite and sodium chloride. Regards --Chris.urs-o (talk) 17:41, 12 September 2020 (UTC)
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