Feb 15 (Reuters) - Abacus Mining And Exploration Corp AME.V
* Abacus signs option agreement to earn up to 75 percent interest in Nevada CU - AU Porphyry
* Abacus Mining and Exploration - Option agreement provides for Abacus to earn an initial 60 percent ownership interest in property
* Abacus Mining and Exploration- Following additional 15 percent interest, a joint venture agreement between Abacus & Almadex to be established to develop property Source text for Eikon: ID:nCCNc93HYL Further company coverage: AME.V