3m Point Group

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Table 3002 list all the space groups which have point group 3m.

Table 3002. All space groups which have point group 3m.

Space Group	Patterson Space Group	Number of Symmetry Operators	Crystal System	Laue Class	Lattice Type
P3m1	164	6	Trigonal	-3m	P
P31m	162	6	Trigonal	-3m	P
P3c1	164	6	Trigonal	-3m	P
P31c	162	6	Trigonal	-3m	P
R3m	166	18	Trigonal	-3m	R
R3c	166	18	Trigonal	-3m	R

In 3m, we have the operation of 3fold axis as shown in Figure 3002.

3m point group

Figure 3002. 3m point group.

Practical Electron Microscopy and Database