Results 1–8 of 8 for orthorhombic
Basecentered or sidecentered or endcentered monoclinic lattice (orthorhombicC), like all lattices, has lattice points at the eight corners of the unit cell plus additional points at the centers of two parallel sides of the unit cell. It has unit cell vectors a≠b≠c and interaxial angles α=β=γ=90°.
Bodycentered orthorhombic lattice (orthorhombicI), like all lattices, has lattice points at the eight corners of the unit cell plus an additional points at the center of the cell. It has unit cell vectors a≠b≠c and interaxial angles α=β=γ=90°.
Facecentered orthorhombic lattice (orthorhombicF), like all lattices, has lattice points at the eight corners of the unit cell plus additional points at the centers of each face of the unit cell. It has unit cell vectors a≠b≠c and interaxial angles α=β=γ=90°.
Orthorhombic crystal system is also known as the rhombic system. Minerals of the orthorhombic crystal system are referred to three mutually perpendicular axes, each of which is of a different length than the others.
a ≠ b ≠ c
α = β = γ = 90°
Simple or primitive orthorhombic lattice (orthorhombicP) has one lattice point at the each corner of the unit cell. It has unit cell vectors a≠b≠c and interaxial angles α=β=γ=90°.
Bravais lattice is a set of points constructed by translating a single point in discrete steps by a set of basis vectors. The French crystallographer Auguste Bravais (18111863) established that in threedimensional space only fourteen different lattices may be constructed. All crystalline materials recognised till now fit in one of these arrangements. The fourteen threedimensional lattices, classified by crystal system, are shown to the bottom.
Crystal system

Bravais lattices


cubic a=b=c α=β=γ=90° 


simple cubic

bodycentered cubic

facecentered cubic


tetragonal a=b≠c α=β=γ=90° 


simple tetragonal

bodycentered tetragonal


orthorhombic a≠b≠c α=β=γ=90° 


simple orthorhombic

basecentered orthorhombic

bodycentered orthorhombic

facecentered orthorhombic

monoclinic a≠b≠c α=γ=90°≠β 


simple monoclinic

basecentered monoclinic


hexagonal a=b≠c α=β=90° γ=120° 


hexagonal


rhombohedral a=b=c α=β=γ≠90° 


rhombohedral


triclinic a≠b≠c α≠β≠γ≠90° 

triclinic

Crystal system is a method of classifying crystalline substances on the basis of their unit cell. There are seven unique crystal systems. The simplest and most symmetric, the cubic (or isometric) system, has the symmetry of a cube. The other six systems, in order of decreasing symmetry, are hexagonal, tetragonal, rhombohedral (also known as trigonal), orthorhombic, monoclinic and triclinic.
Crystal system

Unitcell

Conditions on unitcell edges and angles 
cubic 
a=b=c α=β=γ=90° 

hexagonal 
a≠c α=γ=90° β=120° 

tetragonal 
a=b≠c α=β=γ=90° 

rhombohedral 
a=b=c α=β=γ≠90° 

orthorhombic 
a≠b≠c α=β=γ=90° 

monoclinic 
a≠b≠c α=γ=90°≠β 

triclinic 
a≠b≠c α≠β≠γ≠90° 
Generalic, Eni. "Orthorhombic." CroatianEnglish Chemistry Dictionary & Glossary. 20 Oct. 2018. KTFSplit. {Date of access}. <https://glossary.periodni.com>.
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