what is the formula of minerals
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The chemical formula means that in quartz, the ratio O:Si is always 2:1. OLIVINE, on the other hand, is a good example of a mineral with a restricted range of composition. It's chemical formula can be written (Mg,Fe)2SiO4. The chemical formula means that the ratio O:Si:(Mg+Fe) is always 4:1:2.
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Answer:
Chemical Formula
Every mineral has a unique arrangement of elements within its inherent structure. This arrangement of atoms determines a mineral type. All minerals have a chemical formula, which is an analysis of the types and amounts of elements present in a mineral. Every element has a one or two letter abbreviated term. For example oxygen is "O", and gold is "Au". (See the periodical table for a list of all the elements).
The chemical formula of the mineral Hematite is Fe2O3. The letters describe the element type (Fe = iron, O = oxygen), and the subscripted numbers describe the amount of those atoms in each molecule. A Hematite molecule has 2 iron (Fe) atoms and 3 oxygen (O) atoms. If there is no number written after an element, it means there is only one atom of that element present.