Arithmetic crystal class

Arithmetic crystal classes

Other languages

Classes arithmétiques (Fr).

Definition

Three-dimensional arithmetic crystal classes.

Crystal systems	Crystal class
	Geometric	Arithmetic
		Number	Symbol
Triclinic	[math] 1 [/math]	1	[math] 1P [/math]
	[math] {\bar 1} [/math]	2	[math] {\bar 1}P [/math]
Monoclinic	[math] 2 [/math]	3	[math] 2P [/math]
	[math] m [/math]	4	[math] 2C [/math]
		5	[math] mP [/math]
	[math] 2/m [/math]	6	[math] mC [/math]
		7	[math] 2/m P [/math]
		8	[math] 2/m C [/math]
Orthorhombic	[math] 222 [/math]	9	[math] 222 P [/math]
		10	[math] 222 C [/math]
		11	[math] 222 F [/math]
		12	[math] 222 I [/math]
	[math] mm [/math]	13	[math] mm2 P [/math]
		14	[math] mm2 C [/math]
		15	[math] 2mmC [/math]
			[math] (Amm2) [/math]
		16	[math] mm2F [/math]
		17	[math] mm2I [/math]
	[math] mmm [/math]	18	[math] mmmP [/math]
		19	[math] mmmC [/math]
		20	[math] mmmF [/math]
		21	[math] mmmI [/math]

See also

Section 8.2.3 of International Tables of Crystallography, Volume A
Sections 1.3.4 and 1.5.3 of International Tables of Crystallography, Volume B
Section 1.4 of International Tables of Crystallography, Volume C