The results of complex geological and economical re-estimation of the unique vein gold deposit in Irkutsk region are presented. This re-estimation have been done on the base of development and realization of innovative solutions covering all operating components according to today estimation: analyzing and taling into account geological structure, regularities and gold localization conditions; geological substantiation of new techniques for calculation of reserves and estimation of predicted resources; development of optimal solutions for opening of a deposit and development of all calculated reserves via combined method; substantiation of rational technologies for ore processing using up-to-date methods of preliminary concentration; substantiation of optimal production and economical model of deposit development.