- a polymorph of quartz occurring in volcanic rock in the form of colorless, translucent crystals.
- a white microcrystalline mineral consisting of silica and occurring in volcanic rocks. Formula: SiO 2
More Definitions
- EXTRADITION (noun) Definition, Meaning & Examples
- EIGHTY (noun) Definition, Meaning & Examples
- CROSSANDRA (noun) Definition, Meaning & Examples
- FAIR-HAIRED BOY (noun) Definition, Meaning & Examples
- HAEMOLYSIN (noun) Definition, Meaning & Examples
- THIRD-PARTY SOFTWARE (noun) Definition, Meaning & Examples