Akerite – Definition & Meaning

Akerite is a term used in geology to describe a type of mineral that is commonly found in metamorphic rocks. It is a relatively rare mineral that has a unique chemical composition and physical properties. In this article, we will explore the definition and meaning of akerite, its origin, associations, synonyms, antonyms, and example sentences.


Akerite is a mineral that belongs to the group of amphiboles. It has a chemical formula of Ca₂Mg₅Si₈O₂₂(OH)₂ and a hardness of 5-6 on the Mohs scale. Akerite is typically found in metamorphic rocks that have undergone high pressure and temperature conditions.


Akerite was first discovered in the Akerö quarry in Sweden in 1834. It was named after the quarry and has since been found in other locations around the world, including Norway, Russia, and the United States.

Meaning in different dictionaries

The meaning of akerite in different dictionaries is generally consistent with its definition as a type of mineral. However, some dictionaries may provide additional information about its properties and uses.
For example, the Merriam-Webster dictionary defines akerite as “a mineral consisting of a complex silicate of calcium, magnesium, and iron.” The Oxford English Dictionary describes it as “a mineral of the amphibole group, typically occurring in metamorphic rocks.”


Akerite is commonly associated with other minerals that are found in metamorphic rocks, such as quartz, feldspar, and mica. It is also often found alongside other amphiboles, such as tremolite and actinolite.


Some synonyms of akerite include:

  • Calcium magnesium iron silicate hydroxide.
  • Calcium magnesium silicate hydroxide.
  • Akeröite.


As a mineral, akerite does not have any true antonyms. However, it can be contrasted with other types of minerals that are found in different types of rocks, such as igneous or sedimentary rocks.

The same root words

Akerite is derived from the name of the Akerö quarry in Sweden, where it was first discovered. The name of the quarry is believed to come from the Old Norse word “akr,” which means “field” or “acre.”

Example Sentences

Here are some example sentences that demonstrate the use of akerite:

  • The metamorphic rock contained a high concentration of akerite, which gave it a distinctive green color.
  • The mineralogist identified the presence of akerite in the sample using X-ray diffraction analysis.
  • Akerite is a relatively rare mineral that is not commonly found in most types of rocks.
  • The chemical composition of akerite makes it a valuable indicator of the conditions under which metamorphic rocks were formed.
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