dolomite -
Of, pertaining to, or characteristic of the Dolomites.
Wikipedia
Dolomite is the name of a sedimentary carbonate rock and a mineral, both composed of calcium magnesium carbonate CaMg2 found in crystals. Dolomite rock is composed predominantly of the mineral dolomite. Limestone that is partially replaced by dolomite is referred to as dolomitic limestone, or in old U.S.