Where is the most common place you would find the rocks ?

Question: Where is the most common place you would find the rocks ?
- Keywords:
  location,
  rock
Asked by star49dap to Danny, Ciara on 4 Nov 2020. This question was also asked by sere49run.
- Danny Hnatyshin answered on 4 Nov 2020:
  
  So the rocks I work on currently mostly come from mines in Ireland, Canada, Sweden, and Africa.
  These rocks contain a lot of metal so people are interested in learning more about them. They are quite rare so you wouldn’t stumble upon them that often!

Question: Where is the most common place you would find the rocks ?