Assertion: mineral's crystal | /r/AtLocation | 15 forms
Facets:
value: because of differing types of polygon
type: CAUSE
value: because of differing numbers of vertices
type: CAUSE
Source sentences:
text: Because of differing types of polygon that make up the faces, as well as differing numbers of vertices, these crystals appear in 15 forms, several of which are almost eerily reminiscent of Plato's solids: not just the cube (exemplified by halite crystals) but also the octahedron (typical of spinels) and even the dodecahedron (garnets).