FORMATION CONDITIONS OF VEINED FLUORITE K HOMRAT-AKAREM, EGYPT (INFERRED FROM THE INCLUSION STUDY)

Fluid inclusions in veined fluorite were studied. The Khomrat Akarem f luorite deposit is shown to have been formed in the temperature range of 320-95 degrees C, under a pressure of 500-800 bar, with the involve ment of high- and low-mineralized fluids (0.1-4.3 and 13.5-19.0 equiv wt % NaCl, respectively), Low-mineralized solutions could arise from t he cooling of F-bearing essentially chloride fluids, which were derive d from a residual granitic melt at a temperature of about 550 degrees C, Carbon dioxide fluids did not take part in the ore deposition and w ere present only during the late stage of fluorite vein carbonatizatio n.