Eastern deposit

EASTERN DEPOSIT (RU: Восточное месторождение) is the large phosphorite deposit within Syria. The reserves of the phosphorites are more than 400 million tonnes, including 178 million tonnes (1980) of the explored reserves, and of the reserves, which have been prepared for the opencast extraction.

The average content of the P2O5 within the ore is 24.5%. The deposit has been discovered during the 1960 by the Soviet geologists within the region of the Palmirides (Tadmorides) mountain massif. The deposit is operated since the 1972 (the "Eastern-A" and "Eastern-B" ore mines). The productive phosphorite-bearing horizon (the Campanian stage of the Upper Cretaceous) with the thickness of 20 metres is embedded within the gently dipping wing of the anticlinal fold, and is distributed on the area of more than 20 square kilometres. The horizon is exposed on the surface, or is overlain by the Maastrichtian clays. Within the roof of the horizon, there has been explored the industrial layer of the phosphorites with the thickness of 8-12 metres, which is including the lenses of the organogenic and clayish limestones, and the concretions of the flintstones. The phosphorites are formed of the grains (0.1-2 millimetres) of the fluor-carbonatic apatite (60-80%), and of the carbonatic or clayish-siliceous mass, which is cementing these grains. The development is conducted using the opencast method, with the slicing of the blocks using the trenches throughout the entire thickness of the industrial layer. The extraction of the phosphorites is 750 thousand tonnes (1980). The processing of the phosphorites comprises the crushing, flushing, and impacting separation, with the subsequent calcined roasting at the temperature of approximately 900-950 degrees Celsius. The concentrate contains 30-33% of the P2O5. The concentrate is exported mostly to the countries of Europe.