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**Exhibit 99.6**

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| | ---------------------------------- | ------------------------
| | KPMG LLP                           |                         
| | Chartered Professional Accountants | Telephone (416) 777-8500
| | Bay Adelaide Centre                | Fax (416) 777-8818      
| | 333 Bay Street Suite 4600          | Internet www.kpmg.ca    
| | Toronto ON M5H 2S5                 |                         
| | Canada                             |                         

Consent of Independent Registered Public Accounting Firm

To the Board of Directors of AuRico Gold Inc.

We consent to the inclusion in this annual report on Form 40-F
of:

|- | our Independent Auditors Report of Registered Public
      Accounting Firm dated March 3, 2014, on the consolidated financial
      statements of AuRico Gold Inc. (the Company) comprising the consolidated
      balance sheets of the Company as at December 31, 2013 and December 31,
      2012, the consolidated statements of operations, comprehensive income,
      cash flows and shareholders equity for the years then ended, and notes,
      comprising a summary of significant accounting policies and other
      explanatory information,
|- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
|- | our Report of Independent Registered Public Accounting
      Firm dated March 3, 2014 on the Companys internal control over financial
      reporting as of December 31, 2013,                                                                                                                                                                                                                                                                                                                                                                                

each of which is contained or incorporated by reference in this
annual report on Form 40-F of the Company for the fiscal year ended December 31,
2013, being filed with the United States Securities and Exchange Commission.

We also consent to the incorporation by reference of such
reports in the Registration Statements (No. 333-173458, 333-175079 and No.
333-177638) on Form S-8 and the Registration Statement (No. 333-189227) on Form
F-3D of AuRico Gold Inc. filed with the United States Securities and Exchange
Commission.

Chartered Professional Accountants, Licensed Public Accountants

Toronto, Canada March 3, 2014

KPMG LLP is a Canadian limited liability
partnership and a member firm of the KPMG network of independent member firms
affiliated with KPMG International Cooperative (KPMG International), a Swiss
entity.KPMG Canada provides services to KPMG LLP.

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