Method of production of single crystals of calcite optical.

摘要

A process is provided for producing single crystals of optical calcite by a hydrothermal method and comprises heating crystalline calcium carbonate, then crystalline calcium carbonate is recrystallized onto one seed plate arranged vertically in an insertion container and having its side surfaces screened, a temperature difference existing between the zones of location of the calcium carbonate and of the seed plate, ranging within 2 to 4 K.