<|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:
5.2 5.2 3.1
90 90 107
Ca
0.53 0.90 0.55
Ca
0.53 0.10 0.55
Fe
0.00 0.00 0.00
Ru
0.06 0.00 0.00
Identify the crystal system.<|im_end|>
<|im_start|>assistant
Given the following crystal representation:
5.2 5.2 3.1
90 90 107
Ca
0.53 0.90 0.55
Ca
0.53 0.10 0.55
Fe
0.00 0.00 0.00
Ru
0.06 0.00 0.00
Identify the crystal system.