I must be guessing here, but do you have any hardness points, acids of any kind, and pictures ...
Obviously, you have internet, so why not research Mindat and find what copper or minerals there are that are known in the
area where you collected them.to give you a starting point, visually to relate to regards colours and form
as what is associated with what...and if you can recognize ore matrix rock,and the ore's thickness of deposition and that of it's associated minerals, since this sometimes offers you a group
of informations that give many clues to their identity