Aluminite – Definition & Meaning

Aluminite is a term that is not commonly known, but it has important applications in the field of geology and mineralogy. It is a mineral that is composed of aluminum, oxygen, and water, and is found in various geological formations around the world. In this article, we will explore the definition and meaning of aluminite, its origin, associations, synonyms, antonyms, and example sentences.


Aluminite is a mineral that is classified as a hydrous aluminum sulfate. It has a chemical formula of Al2(SO4)(OH)4•7H2O and a hardness of 2.5 on the Mohs scale. It is a white to grayish mineral that is commonly found as a crust or coating on rocks or in mineral veins.


Aluminite is formed through the weathering of rocks that contain aluminum minerals. It is commonly found in areas with high levels of rainfall and humidity, where it forms as a result of the oxidation of aluminum-rich minerals in the soil. It is also found in volcanic environments, where it is formed through the interaction of volcanic gases with the surrounding rocks.

Meaning in different dictionaries

According to the Merriam-Webster dictionary, aluminite is defined as “a white mineral consisting of a hydrous sulfate of aluminum and occurring in crusts or fibrous masses.”
The Oxford English Dictionary defines aluminite as “a white or grayish mineral consisting of a hydrous sulfate of aluminum, occurring as a crust or coating on rocks and in mineral veins.”


Aluminite is associated with other minerals such as gypsum, halite, and calcite. It is also found in association with other aluminum minerals such as bauxite and kaolinite.


Some synonyms of aluminite include alumstone, alum shale, and alum earth.


There are no specific antonyms for aluminite, as it is a mineral with a unique composition and properties.

The same root words

The root word of aluminite is “alum,” which is a term used to describe a group of minerals that contain aluminum and sulfate ions. Alum is commonly used in the production of paper, textiles, and food products.

Example Sentences

  1. The geologist discovered a vein of aluminite in the rock formation.
  2. The aluminite coating on the surface of the rocks was a result of weathering and oxidation.
  3. The alumstone quarry was a major source of aluminite for the local paper mills.
  4. The chemical properties of aluminite make it a useful material for industrial applications.
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