Вестник МГТУ. 2019, Т. 22, № 1.

Вестник МГТУ. 2019. Т. 22, № 1. С. 36-47. DOI: 10.21443/1560-9278-2019-22-1-36-47 Carbon silicide - from rare (on the left coast) to tens of particles (on the right coast) - occurs as sharply angular- and irregular-shaped fragments, rare irregularly angular-shaped fragments or single tabular crystals colored dark blue, greenish light blue, grayish light blue and rarely light gray with a shiny metallic luster. The fracture is conchoidal, the surface is clean. The common size of fragments is 0.1-0.2 mm (on the left side mostly) to 0.45 mm (on the right side), single particles are up to 0.7 mm (Fig. 9). Verified by the microprobe analysis (Table). Fig. 8. X-ray diagram o f a diamond grain (bottom) compared with standard diamond powder (top) Рис. 8. Ренгенограмма зерна алмаза (нижняя часть рисунка) в сравнении с эталоном алмазного порошка (верхняя часть) Fig. 9. Fragments of moissanite crystals (carbon silicide) Рис. 9. Осколки кристаллов муассанита (карбид кремния) 43