DENVER--(BUSINESS WIRE)--Gold Resource Corporation (NYSE American: GORO) (the "Company,†"we,†"our,†or "GRC†) is pleased to announce that it has entered into a definitive arrangement agreement and plan of merger (the "Arrangement Agreement†) with Goldgroup Mining Inc. (TSX-V: GGA; OTC: GGAZF) ("Goldgroup†), whereby Goldgroup has agreed to acquire all of the issued and outstanding shares of the Company's common stock (the "Transaction†). Pursuant to the Arrangement Agreement, the Company's stockholder ...