A. Iron, gold and silver
B. Gold, silver and lead
C. Iron, lead and sulphur
D. All of the above minerals
Correct Answer: All of the above minerals ✔
Last Updated: June 11, 2019
A. Iron, gold and silver
B. Gold, silver and lead
C. Iron, lead and sulphur
D. All of the above minerals
Correct Answer: All of the above minerals ✔
Last Updated: June 11, 2019