* Oct hearing unlikely to be final in Sukari case - co official

* Q2 core earnings fall 49 pct to $32.6 mln

* Q2 gold production falls 13 pct to 81,281 ounces

* Co maintains 2014 production target of 420,0000 ounces of gold (Adds details, comment from investor relations head, analysts, share price)

By Karen Rebelo

Aug 14 (Reuters) - An appeal case hanging over Centamin Plc's right to mine gold in Egypt is likely to drag into next year, a company official said, although mining will continue unchecked pending its resolution.

Centamin's London-traded shares fell about 1 percent after the company also reaffirmed a full-year production target for its only mine that one analyst described as "challenging".

Centamin is appealing a 2012 court ruling that declared its right to operate Sukari invalid. That ruling, under the government of the Muslim Brotherhood, was one of several legal challenges to commercial deals struck under the rule of former President Hosni Mubarak. (http://r.reuters.com/kyh99v)

But Egypt's government has since changed again. Abdel Fattah al-Sisi was sworn in as president in June after leading the army during its ouster of former President Mohamed Mursi last year.

"The court process is ongoing. We've got the next hearing in October. That won't be the final hearing," said Andy Davidson, Centamin's head of investor relations. "That court case ... will likely go into next year before we get a resolution."

Centamin's case is strengthened by an investor-friendly law, in force since April, that restricts the ability of any third party to challenge contracts between the Egyptian government and an investor.

Centamin says it understands, based on legal advice, that it is likely to benefit from the new law.

Centamin Chairman Josef El-Raghy told Reuters in June that he expected the case to be resolved by the end of this year.

Analysts were not concerned about the case taking longer - particularly as enforcement of the original 2012 ruling has been suspended pending resolution of the appeal hearing.

Arguably a bigger challenge for the company will be to meet its target of producing 420,000 ounces of gold at Sukari this year. Second-quarter production 13 percent fell to 81,281 ounces as the company mined lower-grade ore.

"It looks like they've got a lot to do," said Alison Turner, analyst at Panmure Gordon.

Numis Securities analyst Cailey Barker said the guidance looked "challenging", as Centamin would need to produce an unprecedented 130,000 ounces-plus in each of the remaining two quarters.

Centamin said it would process more ore, with a higher average grade, in the second half of the year.

The company also said it would pay a maiden interim dividend of 0.87 cents a share.

Core earnings, or earnings before interest, taxation, depreciation and amortisation (EBITDA), fell 49 percent to $32.6 million for the quarter ended June 30 from a year earlier.

Registered in Jersey, Centamin has been mining gold at Sukari inEgypt's Eastern Desert since 2009. It also has exploration projects inEthiopia and offices in London, Alexandria and Perth. Its stock trades inLondon and Toronto.

Centamin's shares were down 1.1 percent on the London Stock Exchange at 1125 GMT, while the FTSE-250 index was up 0.7 percent. (Editing by Gopakumar Warrier and Robin Paxton)