Is Water a Mineral? (+ 3 Facts You Should Know)

No, water is not considered a mineral. While it is a naturally occurring substance, it does not meet the criteria for a mineral. Minerals are inorganic solids with a specific chemical composition and an ordered internal structure, whereas water is a compound consisting of hydrogen and oxygen and does not have a crystalline structure. ¹

Well, this was just a simple answer. But there are few more things to know about this topic which will make your concept super clear.

So let’s dive right into it.

Why is water not a mineral?

Water is not considered a mineral because it lacks a crystalline structure, which is a defining characteristic of minerals. While water is composed of two hydrogen atoms and one oxygen atom, it does not form a repeating, ordered arrangement of atoms in a crystal lattice. 

Additionally, minerals are typically formed through geological processes, ² whereas water is a compound that can exist in various states depending on temperature and pressure. ³

Minerals are naturally occurring inorganic substances with a specific chemical composition and a crystalline structure. ⁴ They are formed through various geological processes, such as cooling and solidification of molten materials, precipitation from solution, or deposition from biological processes. Minerals have a highly organized arrangement of atoms in a repeating pattern, which gives them their characteristic crystal shapes.

Water, on the other hand, is a compound composed of hydrogen and oxygen atoms. ⁵ While it is essential for life and widely abundant on Earth, water does not possess a crystalline structure. Instead, it exists in different states (liquid, solid, gas) depending on temperature and pressure. Water molecules are not arranged in a regular, repeating pattern, and they do not form a crystalline lattice.

In summary, water does not meet the criteria to be classified as a mineral because it lacks a crystalline structure. Minerals have a highly ordered arrangement of atoms, while water molecules do not form a repeating pattern. Although water is essential and exhibits unique properties, it is not considered a mineral within the realm of mineralogy and geology.

How is water different from minerals?

Water differs from minerals in several key aspects.

• Composition: Water is a compound made up of two hydrogen atoms and one oxygen atom, chemically represented as H₂O. In contrast, minerals are naturally occurring inorganic substances with specific chemical compositions that can vary greatly. Minerals can consist of a single element or a combination of elements bonded together.
• Structure: Minerals possess a crystalline structure, meaning their atoms are arranged in a highly organized and repeating pattern called a crystal lattice. ⁶ This regular arrangement gives minerals their characteristic shapes and forms. On the other hand, water lacks a crystalline structure. Its molecules are loosely bonded and can move more freely, allowing water to exist in different states—liquid, solid (ice), and gas (water vapor). ⁷
• Formation: Minerals are typically formed through geological processes over long periods of time. ⁸ They can result from the cooling and solidification of molten materials (igneous minerals), the precipitation of dissolved substances from solutions (sedimentary minerals), or the alteration of existing minerals under high pressure and temperature (metamorphic minerals). Water, however, is not formed through geological processes but is a compound that can be present in the environment, created through the combination of hydrogen and oxygen.
• Properties: Water exhibits unique properties compared to minerals. It has a high heat capacity, is an excellent solvent, and has a relatively high boiling and freezing point compared to other compounds. ⁹ These properties make water vital for supporting life and playing essential roles in various physical and chemical processes. Minerals, on the other hand, possess their own distinct properties depending on their composition, such as hardness, luster, cleavage, and color.

In summary, water and minerals differ in composition, structure, formation processes, and properties. While water is a compound with distinct properties, minerals are naturally occurring inorganic substances with specific chemical compositions and crystalline structures.

Further reading

Is Glass a Mineral?
Is Mercury a Mineral?
Is Petroleum a Mineral?
Is Lithium a Mineral?
Is Salt a Mineral? 

1. P. (n.d.). Water. Water | H2O | CID 962 – PubChem. https://pubchem.ncbi.nlm.nih.gov/compound/962
2. Minerals – Geology (U.S. National Park Service). (n.d.). Minerals – Geology (U.S. National Park Service). https://www.nps.gov/subjects/geology/minerals.htm
3. Properties of water – Wikipedia. (2018, October 1). Properties of Water – Wikipedia. https://en.wikipedia.org/wiki/Properties_of_water
4. Estrada, C. (n.d.). 3.1 What Is A Mineral? – Dynamic Planet: Exploring Geological Disasters and Environmental Change. 3.1 What Is a Mineral? – Dynamic Planet: Exploring Geological Disasters and Environmental Change. https://open.maricopa.edu/hazards/chapter/3-4/
5. Hydrogen bonds in water (article) | Khan Academy. (n.d.). Khan Academy. https://www.khanacademy.org/science/ap-biology/chemistry-of-life/structure-of-water-and-hydrogen-bonding/a/hydrogen-bonding-in-water
6. Open.edu https://www.open.edu/openlearn/science-maths-technology/minerals-and-the-crystalline-state/content-section–glossary/?printable=1
7. Uiuc.edu http://ww2010.atmos.uiuc.edu/(Gh)/guides/mtr/cld/dvlp/wtr.rxml
8. Minerals – Geology (U.S. National Park Service). (n.d.). Minerals – Geology (U.S. National Park Service). https://www.nps.gov/subjects/geology/minerals.htm
9. Water, the Universal Solvent | U.S. Geological Survey. (2018, June 9). Water, the Universal Solvent | U.S. Geological Survey. https://www.usgs.gov/special-topics/water-science-school/science/water-universal-solvent