Some of CNR Material have same icons making hard to distinquish between them. I list those i found. I May add more later on.
Lump of coal/Bag of sand
Nugget of copper ore/Nugget of tin ore/Nugget of iron ore/Titanium ore/Cobalt Ore
Copper Ingot/Tin Ingot/Bronze Ingot/Iron Ingot/Titanium ingot/Iron Ingot
-seems all ingots and ore have same ...
Edit: Added more II