Voting rules: Choose the mineral you think is the most difficult!
This is a community-based ranking of the most difficult mineral to find. We do our best to provide fair voting, but it is not intended to be exhaustive. So if you notice something or mineral is missing, feel free to help improve the ranking!
A participant may cast an up or down vote for each mineral once every 24 hours. The rank of each mineral is then calculated from the weighted sum of all up and down votes.