Calcite is an important optical material because of its high birefringence and availability as large, good quality, natural crystals. While sizeable quantities of natural calcite crystals are found in the earth's crust, at present all important sources of high quality crystals are foreign, and since the availability of these crystals at reasonable prices cannot be assured, we have undertaken a program to explore the possibility of producing large, high quality calcite crystals in the laboratory.

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