GLOBULAR CALCITE
A great specimen with well defined Globular Calcite crystals on matrix.
Location:
Bundoora, VIC.
Dimensions:
6cm x 5cm x 3cm, 87g.
CaCO3, Calcium Carbonate.
Calcite, which gets its name from “chalix” the Greek word for lime, is a most amazing and yet, most common mineral. 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. 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 more than 99% calcite. Why would a collector be interested in such a common mineral? Its extraordinary diversity and beauty.