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The 21 pages that link to Monoclinic crystal system, each with the reason it gives.
Crystal systemBroader topic: Its single oblique cell angle separates it from orthorhombic geometry.
PyroxeneRelated: Most calcium-rich clinopyroxenes crystallize in this symmetry.
AmphiboleRelated: Most amphiboles crystallize in this system, though some are orthorhombic.
OrthoclaseRelated: Orthoclase’s crystal symmetry is monoclinic at ordinary temperatures.
AzuriteRelated: Azurite crystallizes in this system, shaping its characteristic crystal forms.
ActinoliteRelated: Actinolite crystallizes in the monoclinic system, shaping its crystal symmetry.
Copper(II) oxideRelated: CuO crystallizes in a monoclinic structure.
WolframiteRelated: Wolframite's crystal structure belongs to this system.
EpidoteRelated: Epidote’s crystals belong to this system, shaping their characteristic forms.
RealgarRelated: Realgar’s crystal structure belongs to this system.
CrocoiteRelated: Crocoite crystals belong to this system, shaping their elongated forms.
AllaniteRelated: Most common allanite species crystallize in this system.
CummingtoniteCompared with: Many amphiboles are monoclinic, whereas cummingtonite is orthorhombic.
TitaniteRelated: Titanite crystals belong to this system, shaping their forms and symmetry.