What is the main composition of crystal?

The most important component of crystal is "silicon dioxide", which is also the most important mineral, occupying more than 65% of the shell components.

transparent

Shi Ying crystal is a colorless and transparent large-scale timely crystal mineral. Its main chemical composition is silicon dioxide, and its chemical formula is SiO2. Crystal is colorless, purple, yellow, green, smoky and so on. , glass luster, transparent to translucent. Hardness 7, brittle, no cleavage; The crystal density is 2.56-2.66g/cm3, and the crystal refractive index is 1.544- 1.553, which is almost within this range. The crystal dispersion is 0.0 13, and the crystal melting point is 17 13℃.

When it is pure, it forms colorless and transparent crystals, and when it contains trace elements such as aluminum and iron, it is purple, yellow and brown. After irradiation, trace elements form different types of color centers and produce different colors, such as purple, yellow, brown and pink. Inclusion crystals containing associated inclusion minerals, such as frosted crystals and green ghosts, include rutile, tourmaline, actinolite, mica and chlorite.