Examlex
Many countries restrict the varieties of commercially-grown lima beans due to the seed's content of
Silicon Tetrahedron
The fundamental building block of silicate minerals, consisting of a silicon atom surrounded by four oxygen atoms in a tetrahedral shape.
Silicate Minerals
Minerals that contain silicon and oxygen in their chemical structure, making up the majority of the Earth's crust.
Sulfides
A group of minerals containing sulfur (S) bonded with a metal.
Pyrite
A common, pale bronze to brass yellow, iron sulfide mineral, commonly called “fool’s gold.”
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