The pink or red basic fluorescence color and its intensity vary substantially, likely as a result of compositional variation sometimes within a single hand-specimen. Much material commonly has a very brief, slightly orange-pink phosphorescence. Other fluorescent colors are seen locally. Composition Table 22. Chemical analyses of carbonate minerals.
Calcite is a calcium carbonate mineral, polymorphous with aragonite.
Physical mixtures with dolomite are common, and the analyst must be aware of these before commencing work. Occurrence and paragenesis Figure 23-9. Parallel-growth array of calcite crystals from Franklin. Field of view is 1.2 mm in maximum dimension. Calcite is the most abundant mineral locally.