Job 28:2

where iron is digged out of the ground, and stones resolved to metal.

Deuteronomy 8:9

a land wherein thou shalt not eat bread in scarceness, and where thou shalt lack nothing, a land whose stones are iron, and out of whose hills thou shalt dig brass.

Genesis 4:22

And Zillah she also bare Tubalcain; a worker in metal and a father of all that grave in brass and iron. And Tubalcain's sister was called Naamah.

Numbers 31:22

Gold, silver, brass, iron, tin and lead,

1 Chronicles 22:14

Behold: in mine adversity I have prepared for the house of the LORD a hundred thousand talents of gold and a thousand, thousand talents of silver, and as for brass and iron it cannot be numbered, it is so much. And I have prepared timber and stone, and shalt provide more thereto.

Treasury of Scripture Knowledge

Summary

Iron is taken out of the earth, and brass is molten out of the stone.

Bible References

Iron

Genesis 4:22
And Zillah she also bare Tubalcain; a worker in metal and a father of all that grave in brass and iron. And Tubalcain's sister was called Naamah.
Numbers 31:22
Gold, silver, brass, iron, tin and lead,
Deuteronomy 8:9
a land wherein thou shalt not eat bread in scarceness, and where thou shalt lack nothing, a land whose stones are iron, and out of whose hills thou shalt dig brass.
1 Chronicles 22:14
Behold: in mine adversity I have prepared for the house of the LORD a hundred thousand talents of gold and a thousand, thousand talents of silver, and as for brass and iron it cannot be numbered, it is so much. And I have prepared timber and stone, and shalt provide more thereto.