This intricate naturally formed stone Calcite, which gets its name from "chalix" the Greek word for lime, is a most amazing mineral. It is one of the most common minerals on the face of the Earth, comprising about 4% by weight of the Earth's crust and is formed in many different geological environments. Calcite can form rocks of considerable mass and constitutes a significant part of all three major rock classification types. It forms oolitic, fossiliferous and massive limestones in sedimentary environments and even serves as the cements for many sandstones and shales. Limestone becomes marble from the heat and pressure of metamorphic events. Calcite is even a major component in the igneous rock called carbonatite and forms the major portion of many hydrothermal veins. Some of these rock types are composed of better than 99% calcite. This is even the primary ingredient in many antacid tablets. Why are collectors interested in such a widely found mineral? Its extraordinary diversity and beauty! The 50mm Champagne Calcite Sphere is two inches in diameter. If you prefer to order by telephone or by fax, click here for more information. Product Number ORCAL50
