The World Federation One Stop Fiqh

Ruling 1815

Mined products such as gold, silver, lead, copper, iron, oil, coal, turquoise (fīrūzah), agate (ʿaqīq), alum, salt, and others, are considered to be anfāl, i.e. they belong to the Imam (ʿA). However, if someone extracts them and there is no legal obstacle, he can own them; and in the event that the mined product’s value reaches the taxable limit (niṣāb), he must pay khums on it.