1 Insurance premiums for modular homes are the same as site-built homes. 2  Taxes on modular homes are the same as site-built homes. 3  Modular homes can be built to withstand 175-mph winds.  Modular homes can be built for accessible living and designed for future conveniences.
Quartzite. Quartzite is a metamorphic rock consisting largely or entirely of quartz. In vast majority of cases, quartzite is a metamorphosed sandstone. The transition from sandstone to quartzite is gradational. There is little mineralogical change.Quartz, the main constituent of sandstone, is not altered to other minerals but it is recrystallized during the metamorphism.his small sample of Jotnian quartzite from Finland is either strongly cemented sandstone or weakly metamorphosed quartzite. It is old (1.4 Ga) and a part of crystalline basement. Hence, it is usually considered to be a metamorphic rock. Width of the sample is 4 cm.
Metamorphic rocks. Metamorphism is the alteration of pre-existing rocks in the solid state due to changes in temperature and pressure. Under increasing temperature and / or pressure existing minerals become unstable and break down to form new minerals.In the case of regional metamorphism the rocks are subjected to tectonic forces which provide the necessary mechanisms for metamorphism. Products include schist and slate.nder increasing temperature and / or pressure existing minerals become unstable and break down to form new minerals. In the case of regional metamorphism the rocks are subjected to tectonic forces which provide the necessary mechanisms for metamorphism.