(a.), "mine, ore, mineral, metal". In modern Arabic, the word mand̲j̲am denotes "mine", while muʿaddin means "miner" and d̲j̲amād is a mineral.

In the vast Islamic empire, minerals played an important part. There was a great need for gold, silver and copper for the minting of coins and other uses. Iron ore was indispensable for the manufacture ¶ of iron and steel for arms and implements. Other minerals such as mercury, salt and alum, as well …