6. how does silica content influence mineral melting points? how is silica content related to the mineral crystallization order from a magma? in other words, which silicates (dark or light) crystallize first from magma? melt first from a solid rock?

silica content is main driving force for the formation of high intense explosions

Explanation:

The higher abundance of this mineral in the lava or magma is a product of the tectonic force that is found acting in close motion with that of the melting of the molten rocks under the earth surface and hence these rocks have greater potential to build pressure and release with a strong upwards force. This silicate group of the mineral is mostly found in quartz and polymorphs that have constituted about  90% of the matter on the earth's crustal surfaces. These are groups of light-colored crystal rocks and occur form the melting in the earth by the metamorphism and other weathering process.