Temperature To Melt Granite

Strictly speaking geo thermal necessarily refers to earth but the concept may be applied to other planets.

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. 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. Often the silicates are grouped as high medium and low melting point solids.

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. Melting points of rocks igneous rocks form through the crystallization of magma there is a considerable range of melting temperatures for different compositions of magma. 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.

The melting point of granite is 550 degrees c. You may feel further comfort about granite s heat resistant properties when you know that steel starts melting at 2498o f 1370o c. The melting temperature of dry granite at ambient pressure is 1215 1260 c 2219 2300 f. 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 hawaiian basalt lava it would not melt but it would glow bright orange. Please check the following site for more information. The presence of water in the rock is important to lower the melting temperature. All the silicates are molten at about 1200 c when a part of rock and all are solid when cooled to about 600 c.