Correct

铁矿

/ tiěkuàng / 
Strokes

Definition

iron ore/iron ore mine

Example

As a Noun

iron ore

1
Jīngyíng
经营
tiěkuàng
铁矿

mine iron

As a Noun

iron mine

2
Kāicǎi
开采
tiěkuàng
铁矿

work an iron mine