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.
Sometimes the names given to marbles describe the materials from which they are made and sometimes they describe their appearance. Here are some of the major classifications. Alley or Real describes a marble that is made from real marble or alabaster. Alley stands for alabaster.lass marbles are probably the most popular today, but they can also be made from clay, crockery, china, real marble, stone ivory, agate, steel and other materials. Generally, marbles are around 1/2-inch across, but they can range from less than 1/4-inch to more than 3 inches.