Mineral Rocks are required to grow plants and as such are rather important and sought after. They're primarily needed to make Mineral Soil as Resynth plants cannot grow on normal soil. But as well as being required for plant growth, they're also an important crafting component for most Resynth items and a fertilizer for plants.

Making Mineral Soil from Mineral Rocks
Mineral Rocks don't directly turn dirt into Mineral Soil. Instead, they're first crafted into Dense Mineral Rocks and smelted into Mineral Crystals. These Mineral Crystals are then used to charge up the Mineral Hoe which turns dirt into Mineral Soil at the cost of charges (Mineral Crystals).

Using Mineral Rocks as a fertilizer
Mineral Rocks also serve to speed up plant growth. They can be added to Mineral Soil by right clicking the block with Mineral Rocks in hand. Each Mineral Rock increases the mineral content of the soil block by 1% . Plants growing atop Mineral Soil blocks with a higher mineral content grow faster.

Crafting recipes that require Mineral Rocks
Some common recipes that require Mineral Rocks to be crafted/smelted.

This section details the ways in which Mineral Rocks are obtained.

By Mining
In the beginning, the only way you'll be able to obtain Mineral Rocks is by mining it from Mineral Stone. When mined, Mineral Stone will drop between 1 and 3 Mineral Rocks. The number of Mineral Rocks dropped can be increased with fortune.

By Farming
This method of obtaining Mineral Rocks initially requires mining a reasonable of Mineral Stone.
When mining Mineral Stone, seeds for Mineral Rocks will occasionally drop. These seeds allow you to grow Mineral Rocks (at a faster rate than most other plants ) so you don't have to keep mining Mineral Stone throughout the game.


Mineral Rocks atop Mineral Stone.