MILAN, Aug 30 (Reuters) - Shares in European oil producers, miners and other companies with large exposures to Gabon plummeted on Wednesday after a military coup raised concerns over their operations in the resource-rich African country. "Shares are reacting to concerns over the backdrop in Gabon," said Investec equity analyst Alex Smith in London. However, Assala Energy, which current owner Carlyle (CG.O) has agreed to sell to Maurel, said its oil production in Gabon was unaffected. "Note Gabon production represents around 20% of group production. Oslo-listed Panoro Energy (PENR.OL) and BW Energy (BWE.OL) were down 5% and 7%, respectively, and U.S.-based Vaalco Energy (EGY.N) fell 13.8%.

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Persons: Maurel, Eramet, Alex Smith, Ali Bongo, Carlyle, Investec's Smith, Danilo Masoni, Alun John, Kirsten Donovan Organizations: MILAN, Military, REUTERS, Staff, Rights, Assala Energy, Energy, BW Energy, Vaalco Energy, Thomson Locations: Gabon, London, France, Frankfurt, Germany, Gabonese, Mouila, OPEC, Oslo, U.S, Gabon's