Once the skin stretching is completed, you'll most likely have more surgery to replace the tissue expander with a permanent implant. Surgery is usually scheduled about 4 to 6 weeks after the last amount of liquid has been added to the expander.
Quartzite. Images: Background: Quartzite is a nonfoliated metamorphic rock that formed by the metamorphism of pure quartz sandstone. The intense heat and pressure of metamorphism causes the quartz grains to compact and become tightly intergrown with each other, resulting in very hard and dense quartzite.uartzite. Images: Background: Quartzite is a nonfoliated metamorphic rock that formed by the metamorphism of pure quartz sandstone. The intense heat and pressure of metamorphism causes the quartz grains to compact and become tightly intergrown with each other, resulting in very hard and dense quartzite.
Foliated metamorphic rocks such as gneiss display banding and re â¦ grouping of its mineral constituents as a result of enormous pressures and heat. The banding forms perpendicularly to the direction of pressure. The pressure is usually related to tectonic plate collisions.on-foliated rock includes quartzite, marble, and metabasalt. Non-foliated metamorphic rocks are most often derived from single mineral sedimentary rocks like limestone and quartz sandstone.