I will introduce you to the Dense Ores Rebornadd-on, which adds dense ores to the Minecraft game. If a player breaks such ores, he gets three times more valuable resources. As a result, this is a rather valuable ore, as it gives 12 pieces of minerals as a result. It's a pleasure to receive such a bonus.
Dense ores will drop up to 12 resources, and four sparkling ones will drop from ordinary ores. Accordingly, the profit is 3x. In this way, your extraction of materials will become easier and much faster as you get an increased amount of resources. Standard ores will still generate.
In this expansion, the dense ores correspond to the Upper and Lower world ores.
The book describes at what level certain minerals and their ores are generated.