Many people with Ehlers-Danlos syndrome have soft, velvety skin that is highly stretchy (elastic) and fragile. Affected individuals tend to bruise easily, and some types of the condition also cause abnormal scarring.
Quartzite is a metamorphic rock that is formed from the sedimentary rock sandstone. Slate is a metamorphic rock that is formed from the sedimentary rock mudstone. Granulite is a metamorphic rock that is formed from the igneous rock basalt.
1 Quartzite falls into the classification of a metamorphic rock. 2  Its original material, sandstone in this case, has been altered by pressure and heat that transforms it into quartzite.3  Buried deep inside the earth the sandstone adapts to the change in conditions by altering its texture and composition. Its original material, sandstone in this case, has been altered by pressure and heat that transforms it into quartzite. 2  Buried deep inside the earth the sandstone adapts to the change in conditions by altering its texture and composition.