QuickLinks -- Click here to rapidly navigate through this document

Exhibit 23.1

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

        We consent to the incorporation by reference in this Form S-4 (the "Registration Statement") of our reports dated March 10, 2011, relating to the consolidated financial statements of US Gold Corporation (the "Company") and the effectiveness of internal control over financial reporting, which appear in the Annual Report on Form 10-K of the Company for the year ended December 31, 2010. We also consent to the reference to us under the heading "Experts" in the Registration Statement.

/s/ KPMG LLP

Chartered Accountants, Licensed Public Accountants
Toronto, Canada

December 2, 2011

QuickLinks

Exhibit 23.1