Definition: Selenobismuthite is a mineral that is commonly known as "selenite". It is a naturally occurring mineral with an octahedral structure, which means it has six layers of atoms arranged in a triangular pattern. The name "selenobismuthite" comes from the term "selenium-bismuthate", which refers to the chemical formula of selenobismuthite. Selenobismuthite is found in various minerals and rocks, including granite
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