Equivalent Exchange 3 is a mod in development by Pahimar. It is an open source mod meaning anyone can use it in their mod packs or to help them develop their own mods (the source is available on Github ).
Equivalent Exchange 2 (the version that came before if you're not bright) added lots of items to make you very godlike. But for Pahimar that was a problem. He didn't want to be the one behind a mod that removes mining and crafting from Minecraft so he vowed that EE3 would totally rebalance it.
New itemsMinum shards: Obtained from killing hostile mobs