Such is the story of an Arkansas man who drank so much iced tea that it led him to develop kidney failure. Three Arkansas doctors described the case in a letter published by the New England Journal of Medicine this week.
What is Marble? Marble is a metamorphic rock that forms when limestone is subjected to the heat and pressure of metamorphism. It is composed primarily of the mineral calcite (CaCO3) and usually contains other minerals, such as clay minerals, micas, quartz, pyrite, iron oxides, and graphite.
Marble is made from limestone. recrystallise. The rock that is produced is called marble. is much harder than limestone, and has a smooth even texture. Marble is a valuable rock for construction and decoration. It can be polished to produce an attractive mottled surface.