III. Kalksten fra Nordland
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Some analyses of limestones from Northern Norway are given. They show that the percentage of carbonate of Magnesium (MgCO3) is small in several of these lime- stones. They may therefore be used in the industries of carbide and cellulose. The limestones of Northern Norway consist of varieties from almost pure carbo- nate of Calcium (CaCO3) to dolomite (CaCO3MgCO3). It was formerly a common belief that all the limestones of this region were too rich in carbonate of Magnesium for such uses, but that is not the case.