ABSTRACT: Fluorite mineralization of Etir Plaine İs located in upper Cretaceous andesltic volcanic rocksin north western, Şebinkarahisar, Giresun. This unit is overlaid by Lutetien volcano . Sedimentary rook»which starts with a basal conglomerate,Fluorite veinlets, up to SO cm. In length, vary between 1-1? cm. tn thtehkness Those »re eoncentratedin three zones trending in. N 10° W _ N 40°W and which have lengthsupto 285 m.In the walls of the veins kaialenlzatlon and some »lUclficatton could be noticable, MJneraloglcal investigations of those veins revealed that the veins were formed in two stages:1, Green fluorite . sphalerite - galena - tennantlte (freiberglte) and ealoopyrite have took place%. link fluorite andyor quartz-purple fluorite have took place.These two stages are seperated from each other by breeelatlon and fragments which belong to first stageare cemented by pink fluorite and purple fluorite.Beside, by working on fluid inclusions of sphalerite and fluorite, homogênlzatlon temperatures of mineralizatiiMi In different stages Is determined, carried out on the samples. The honusgenization tenipeatures ofchanges between ISO0 , 250» O, Absence of halite (NaOI) crystals In the fluid inclusions indicate that salinity Issteady below 80%.