ABSTRACT: Bayındır fluorite veins appear mithin tho syenites and gabbros formations which belong to Upper Ps^eccene intrusions of Kırşehir Massif, It lias been found that these fluorite-s, which air© greenf whit© and yellow in colour originate«! in varias stages of the hydrothermal perod (Yamam, 1084) in the 8 fluorite samples the total REE eontens varies between 8 and 89 ppm. The dark coloured flaorites contain more BEE. It is seen from the chondrite normalised SEE diagrams that the green fluorites show positive and the yellow ones negative anomalies, Plate on the Tb`La versus Tb/Ca diagram implies that the green fJuorites ?re hydro termal in origin, tat the» yellow fluorites may be produced from the solutions which were affected bj marine water. Hie REE confettis of tîıp green fuorStes formed from hydrotersnal Solutions show « similar REE patterns to that of feldspars. The distribution of KEE in the green and yellow fluorites show that, they were not originated in similar conditions. Ttiese conclusions are in agreement with the data which, were previously obtained from fluid inclusions. Basecl on the geochemical data, it may be said that the evolution of the flmorite veins were related to the basins which developed, after Upper Paleocene time.