Abstract
Microcrystals attached in random orientations to growing host prism faces of cultured quartz grown by the hydrothermal crystallization technique are described. The microcrystals are established to be quartz. Growth layers and pyramids initiated by the attached guest microcrystals of quartz on the growing host prism faces of bulk quartz crystals are illustrated. Also described are striations, parallel, perpendicular and inclined to the cβaxis, and polygonal growth pyramids on the prism surfaces of attached guest microcrystals. Formation of the microcrystals of quartz is linked to the possibilities of creation of quartz micronuclei in the autoclaves which further establishes and solidly supports the explanation put forward by KOTRU. Effect of unoriented attached tiny crystals of quartz and impurities on the progress of growth layers on the host prism faces is dealt with. Role of attached guest microcrystals in the growth and development of the host prism faces in particular and the cultured quartz in general is discussed. Possibilities of the incorporation of quartz micronuclei inclusions and impurity inclusions in the quartz structure and its effect on the crystalline quality of cultured quartz is briefly dealth with.