ironstone
Kelime Anlamı :
1. demir filizi.
2. demirtaşı.
3. demir filiz.
Tanımlar :
1.
A hard white pottery.
2. A rock containing enough iron to permit commercial extraction; an iron ore.
2. A rock containing enough iron to permit commercial extraction; an iron ore.
from The American Heritage® Dictionary of the English Language, 4th Edition
1.
any ore of iron which is impure through the admixture of silica or clay.
from Wiktionary, Creative Commons Attribution/Share-Alike License