metamorphism
The mineral with the highest known melting point is tungsten, which has a melting point of 3,422 degrees Celsius.
From What I got I dont really know but if you got the work sheet key terms I would go with elements
During smelting, a mineral is heated at high temperatures to separate the valuable metal from the rest of the mineral. The mineral undergoes chemical and physical changes, melting to form liquid metal that can be further processed. Impurities are also removed during this process.
for melting what
A rocks melting point at surface pressures would depend on its mineral composition. Every mineral has a different melting point, and rocks are composed of a variety of minerals.
Water can lower the melting temperature of a mineral by acting as a flux or catalyzing agent, allowing atoms to move more freely and reducing the energy required for melting. This can lead to the formation of new minerals or phases at lower temperatures than would occur without water present.
Rocks such as migmatites, which are a mixture of igneous and metamorphic rock formed through partial melting, would exhibit evidence of this process. Additionally, some granites and gneisses can show signs of partial melting due to the presence of melt pockets or segregated mineral assemblages.
melting
Topaz is the mineral that defines 7 on the Mohs scale.
Melting is a physical process.
A mineral is defined as a naturally occurring crystalline inorganic solid with a regular, ordered structure. Ice meets all those criteria, so it is a mineral. Ice is just as much a mineral as, say, quartz. The only difference is that the melting temperature of ice is very low, but melting temperature doesn't have anything to do with whether or not something is a mineral.
The name of the process is 'Melting'. It is that because the solid is melting into a liquid.