Explanation
silicate mineral with ring structure. Hexagonal crystal system. The cross section of columnar crystal is hexagonal, and there are fine longitudinal lines on the cylinder. The crystal form of beryl changes from high to low with the formation temperature, from long columnar to short columnar. Display different shades of green. emerald refers to those with chrome in emerald green, aquamarine refers to those with trace iron in transparent blue, vorobyevife refers to those with cesium in rose color, and heliodor refers to those with uranium in transparent yellow. glass is glossy, transparent to translucent. Mohs hardness 7.5-8, density 2.66-2.83g/cm3. It occurs in granite pegmatite, or greisen and high-temperature hydrothermal veins, and coexists with albite, columbite-tantalite, spodumene, wolframite, etc. It is the raw material for extracting beryllium. Those with beautiful color can be used as gems. emerald is a superior quality gems, whose value is comparable to that of diamond. beryl containing Cr3+can be used to make stimulated emission microwave quantum amplifiers.
Classification
Natural materials and products -> Mineral materials