GENERAL GEOLOGY

GEOLOGY

CRYSTALLOGRAPHY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
How many crystal systems are there in crystallography?
A
2
B
14
C
7
D
132
Explanation: 

Detailed explanation-1: -There are 7 crystals systems and they are named: Triclinic, Monoclinic, Orthorhombic, Tetragonal, Trigonal, Hexagonal, and Cubic .

Detailed explanation-2: -There are seven types of crystal system and 14 types of Bravais lattices. Reason: Rhombohedral, triclinic and hexagonal crystal systems have only primitive unit cells.

Detailed explanation-3: -These additional lattice points divide the 7 crystal systems into 14 Bravais lattices; the Bravais lattices are subdivided into 32 crystal classes, or point groups.

Detailed explanation-4: -Triclinic System: It is the most unsymmetrical crystal system. Monoclinic System: It comprises three axes where two are at right angles to each other, and the third axis is inclined. Orthorhombic System: Trigonal System: Hexagonal System: Tetragonal Systems: Cubic System:

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