Beryllium ore
The chemical symbol is Be, with an atomic number of 4, and it is a lightweight, steel gray alkaline earth metal. The content in the crust is relatively low, about the 97th most abundant element in the crust. It usually exists in the form of compounds in minerals, such as beryl and siliceous beryllium. Low density, high hardness, and good thermal stability and electrical conductivity. Beryllium is very important in many high-tech applications, especially as a neutron reflector and neutron absorber in nuclear reactors. It is also used as a structural material for manufacturing aircraft and spacecraft, as it provides a combination of high strength and lightweight.
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