Rocks generally melt at temperatures ranging from about 600°C to 1,200°C (1,112°F to 2,192°F), although this can vary depending on the mineral composition of the rock.
Most igneous rocks, which are formed from the solidification of molten material, start to melt at lower temperatures when subjected to extreme heat and pressure conditions. For instance, granite typically melts at around 800°C to 1,000°C (1,472°F to 1,832°F), whereas basalt may melt at slightly higher temperatures due to its higher iron content.
Factors like pressure and the presence of fluids can alter these melting points significantly. In geological settings such as subduction zones, rocks can begin to melt at lower temperatures due to the influence of water and other volatiles.