矿 (kuàng): mineral deposit; ore deposit; ore; a mine; variant of 礦|矿[kuang4]

The geological team discovered a rich iron ore deposit deep in the mountains, with estimated reserves exceeding one hundred million tons.

The workers at this mine go down the shaft to extract coal every day; the work is very hard, but the pay is much higher than farming.

After three years of exploration, they finally found a rich gold deposit in this area.

Over-exploitation has caused mineral resources to gradually dry up, and the local government has begun to limit the amount extracted.