Geochemistry of the upper cretaceous oil shale, NW-Jordan

الملخص EN

The Oil Shale from the Amman Formation of NW-Jordan is mainly of calcareous oil shale type.

It consists of limestone and marly limestone as major compounds beside some chert, phosphate and clay minerals, and contains different amounts of organic matter up to 28 % mainly of kerogen ; its average is 12.12 %.

It is mostly deposited in reducing marine shallow water environment.

The mineral constituents of the studied oil shale are calcite up to 90 wt % (average 63.3 wt %) and quartz, beside apatite and clay minerals, and contains P2Os (average 6.7 wt %,) S04 (average 1.53 wt %) TiOa (average 0.12 wt%) and also the trace elements Zn, V, Pb, Ni, Mo, Cu, Cr, Co, Cd, Ba.

They are mainly associated with carbonates, organic matter, and / or sulphide phases.

These trace elements could be partly of economic importance as byproduct.