Experience gain

I am trying to figure out which gives how much xp(for ease of gaming and for the wiki) .. here is the list so far.. will add to this post when learn more.. feel free to contribute...
Mining:
Top soil: 2xp/mining tool charge
Bottom Soil: 0
Promithium Ore: 30xp/chunk drop
Cobalt Ore: 25xp/Chunk drop
Iron Ore: 20xp/chunk drop
Crashed Stone: 1xp/chunk drop
N.B. If the ore starts from the topsoil it gives xp like topsoil+xp for chunk drop...

Experience gain