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.
Characteristics of Marble as a Sculptural Material. The stone we call marble is a metamorphic rock (mostly composed of calcite, a type of calcium carbonate) formed as a result of changes brought about in the structure of sedimentary or igneous rocks by extreme pressure or heat.