This book (Practical Electron Microscopy and Database) is a reference for TEM and SEM students, operators, engineers, technicians, managers, and researchers.
 

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Table 3554a and Figure 3554 show the triclinic crystal system and the schematic illustration of the triclinic lattice, respectively.

Table 3554a. Triclinic crystal systems.

Figure 3554. Schematic illustrations of the Bravais lattice of triclinic crystals.

Table 3554b. Relationship between Laue classes and point groups.

System	Essential symmetry	Lattice symmetry	Laue class (Diffraction symmetry)	Point Groups (Hermann–Mauguin notation)
Triclinic	None			1, -1
Monoclinic		2/m	2/m	2, m, 2/m
Orthorhombic	222 or 2mm	mmm	mmm	222, mm2, mmm
Tetragonal		4/mmm	4/m	4, -4, 4/m
			4/mmm	422, -42m, 4mm, 4/mmm
Trigonal			3	3, -3
			-3m1	321, 3m1, -3m1
			-31m	312, 31m, -31m
Hexagonal		6/mmm	6/m	6, -6, 6/m
			6/mmm	622, -62m, 6mm, 6/mmm
Cubic	23	m3m	m-3	23, m-3
			m-3m	432, -43m, m-3m

For triclinic structures, the lattice spacing (d-spacing) can be given by, (You can download the excel file for your own calculations)

         --------------------------------- [3554a]
         --------------------------------- [3554b]
where,
        a, b and c -- The lattice constants.
        h, k, and l -- The Miller indices.

Table 3554c. Centrosymmetric, non-centrosymmetric, and chiral space groups for triclinic crystals.

Table 3554d. Other characteristics of triclinic structures.