Quite an unusual seed called griefer4ever in the game Minecraft PE in which you'll find a very pretty village, which will border the Mesa biome. In the village smithy you will find a lot of interesting and useful things, and in caves of the Mesa biome you will find more than 70 blocks of gold and many other useful materials.
Once you appear, go right and go up the hill, there you will find above the village, in the center of which you'll find a forge, and there will be chests with valuable materials and items.
While in the village, turn right and you will see a beautiful and very large Mesa biome in which you will have to descend into a cave, where he will be waiting for you coveted 70 units of gold. The location of the mine you can see in the pictures below.
When you go into it, continue to move into the interior and soon you will find gold.