However, igneous rocks like granite, gabbro, and diorite are known for often containing a large number of different minerals. This is because they cool slowly from molten rock, allowing various minerals to crystallize out in different proportions.
For example, granite typically contains quartz, feldspar, mica, and hornblende, sometimes with traces of other minerals.
It's also important to consider that metamorphic rocks like schist and gneiss are formed from pre-existing rocks that are subjected to heat and pressure, which can cause the original minerals to recombine into new mineral assemblages. This means metamorphic rocks can also contain a wide range of minerals.
Ultimately, the "rock with the most minerals" depends on your specific definition of "most." It could be the rock with the highest total number of different minerals, the highest concentration of minerals by weight, or the rock with the most diverse range of minerals.
