It’s naive to think that pure ore is extracted from rock in reality. The creator of the Dual Ore mod took this concept into account for Minecraft PE – now ores will be “contaminated” with other materials.
How the Dual Ore Mod Works
Rest assured, the standard ore blocks will remain in Minecraft. The mod simply introduces blocks with mixed ores. For instance, when mining a specific type of gold ore, you might have a chance to receive iron ore either instead of or alongside it in MCPE.
The same applies to other blocks – redstone, diamonds, copper, and lapis lazuli.
Fresh ore blocks will generate in Minecraft at depths starting from 40 blocks. To ensure the mod Dual Ore functions correctly, make sure to enable the experimental game settings.