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Havelock, Lime

During the Lower Carboniferous Period, oceans periodically flooded low-lying parts of the Maritimes Basin to create the Windsor Sea. Rocks and minerals that were formed in the Windsor Sea include potash, salt and gypsum. The Gays River Formation represents limestone deposited in the Windsor Sea in reefs composed of algal mounds and stromatolites. Fossil remains of shrimp-like animals called Tealliocaris have been found in rocks made of sediments that were deposited in deeper water, offshore from the reef. Tealliocaris most likely lived in the reef habitat, but when they died their remains were washed into deeper water now represented by the Macumber Formation.

Near the community of Havelock is one of the largest suppliers of lime and limestone products throughout the Atlantic region. For many years the mine was known as Havelock Lime. The Graymont company now operates the limestone mine where they quarry the Gays River Formation. Graymont uses an Annular Shaft Kiln to produce high quality lime. The kiln first dries the limestone, and then heats it to brake down the calcium carbonate chemical structure, driving off carbon dioxide. The remaining calcium is then cooled to produce a range of products.