Chemical Formula: CaMg(CO3)2

Chemical Name: Calcium Magnesium Carbonate

Mineral Class: Carbonate

Mineral Notes: Dolomite is a common sedimentary rock-forming mineral that can be found in massive beds, called Dolomitic Limestone. Debate has raged as to how these beds formed. Dolomite at present time, does not appear to form on the surface of the planet; yet thick layers of the mineral can be found in ancient rocks. That is a huge puzzle for geologists who observe sandstones, shales and limestones deposited today. Why no Dolomite? 

Description: The Dolomite consists of many orange-pink rhombohedral crystals on a thin Quartzite matrix. Many of the crystals are twisted and distorted which adds to the interest of this specimen. The lustre is very pearly. An unusual piece since Dolomite tends to occur more frequently in the massive rather than crystalline form.