Location.
The Al Jalamid sedimentary phosphorite deposit is approximately 120 kilometres east of Turaif south of the village of Hazm Al Jalamid in northern Saudi Arabia.

Mineralisation.
Upper Phosphorite Zone (“UPZ”).
In general, the UPZ is described as calcareous to semi-friable phosphorite, with many lenses of alternating material primarily cemented alternatively with sparry calcite and less frequently with argillaceous cement; scattered patches of pure argillaceous micrite; zones of and isolated nodules of quartz and calcite; highly bioturbated; colours/hues from white/cream to pinkish. The lithology varies from location to location and in many instances significant parts of the zone are semi-friable phosphorite, finegrained, well-packed, well-sorted and is a pinkish gray to light brownish gray with quartz and calcite nodules (geodes) near the base.

The UPZ is defined by material which exceeds 12% P205 and is less than 8% MgO. Generally, the cut-off between overburden and UPZ is a very clear-cut with the % P205 increasing from 8–9 to over 14–15 within a ½-metre interval. Likewise the % MgO drops from 12–13 to 4–6 over the same ½-metre interval. There are, however, exceptions to the rules and judgements have been made accordingly.

Middle Marker (“MM”).
In general, the MM is described as micrite, argillaceous to medium-high phosphate content, thin- bedded and fine-grained to vuggy with geodes and nodules of calcite and lig ........

Ma’aden’s Phosphate Mine produces close to 11.6 million tonnes of ore per year, while the Beneficiation Plant up to 5 million tonnes of concentrated phosphate rock per year.

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