Temperature To Melt Granite

Paul woskov a senior research engineer at mit s plasma science and fusion center psfc is using a gyrotron a specialized radio frequency rf wave genera.

Temperature to melt granite.

It is strongly reduced in the presence of water down to 650 c at a few kbar pressure. This video is aheating melting and vitrification of granite by the halogen point heater. Because of the mineralizers in the magma the temperature interval over which it crystallizes will be lower than that over which the rock can be melted in an open crucible in the laboratory. If you were trying to melt granite or a mixed sediment not pure quartz or calcite which occurs on some beaches it would almost certainly melt.

The presence of water in the rock is important to lower the melting temperature. The melting point of granite is 550 degrees c. Often the silicates are grouped as high medium and low melting point solids. If you were trying to melt hawaiian basalt lava it would not melt but it would glow bright orange.

All the silicates are molten at about 1200 c when a part of rock and all are solid when cooled to about 600 c. Geothermal gradient is the rate of increasing temperature with respect to increasing depth in earth s interior. Granite has poor primary permeability overall but strong secondary permeability through cracks and fractures if they are present. Strictly speaking geo thermal necessarily refers to earth but the concept may be applied to other planets.

Please check the following site for more information. Please note the fact that melting point of granite is 2210o to 2300o f 1210o to 1260o celsius whereas you cook your steak at around 350o to 450of 177o to 232o celsius. Away from tectonic plate boundaries it is about 25 30 c km 72 87 f mi of depth near the surface in most of the world. Melts at about 984 to 1260 and granite at about 1215 to 1260.