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.
Each kind of sedimentary rock turns into a different kind of metamorphic rock-limestone turns into travertine or marble, and shale turns into slate, and sandstone turns into quartzite.Even though slate is a metamorphic rock, it still looks a lot like a sedimentary rock-it is still in thin layers. A raw (uncut) diamond.hen sedimentary rocks like limestone or shale were under water, sometimes the weight of the water pressed them so hard that they actually changed the way their molecules locked together and became a different kind of rock. Metamorphosis means changes form, and that's why we call these metamorphic rocks.