In a solid solution, there are intermediate members between the two end members. Individual intermediary members of some series may be given names, while others may not. Fe 2 SiO 4 as the end members. Some solid solution series classify different intermediary members based on the percentage of the anchor minerals they contain. There are certain elements that come in slight modifications.
Some elements have different amounts of electrons in different atoms of the same element.
Some minerals, such as babingtonite , contain two types of the same element. The amount of electrons affects the chemical bonding of iron or any other element with variable electrons. The formula of many minerals can be written in different formats. Some references may have one or two elements in the formula of a mineral that does not exist in the formula of a different reference. Both formulas are correct.