<|im_start|>system
Please reason step by step, and put your final answer within \boxed{}.<|im_end|>
<|im_start|>user
Given the following crystal representation:
2.6 2.6 7.0
90 90 91
Zn
0.00 0.00 0.51
Fe
0.00 0.00 0.00
Ni
0.79 0.00 0.72
Ni
0.79 0.00 0.30
Identify the crystal system.<|im_end|>
<|im_start|>assistant
Given the following crystal representation:
2.6 2.6 7.0
90 90 91
Zn
0.00 0.00 0.51
Fe
0.00 0.00 0.00
Ni
0.79 0.00 0.72
Ni
0.79 0.00 0.30
Identify the crystal system.