Boron (symbol B, atomic number 5) is a chemical element and a metalloid. Because stellar nucleosynthesis does not lead to the production of boron, it is only available in small amounts in the earth's crust and the solar system. Due to the water solubility of borate minerals, which are naturally occurring compounds of boron, the element is concentrated on Earth. Borate minerals are mined in the form of evaporate ores, including kernite and borax.
The chemically uncombined form of boron does not occur naturally on Earth. Pure boron is not easily produced because it forms different refractory materials which contain...Read More