Oligoclase meaning

Oligoclase is a variety of plagioclase feldspar with a composition intermediate between albite and anorthite.


Oligoclase definitions

Word backwards esalcogilo
Part of speech Oligoclase is a noun.
Syllabic division o-li-go-clase
Plural The plural of the word oligoclase is oligoclases.
Total letters 10
Vogais (4) o,i,a,e
Consonants (4) l,g,c,s

Oligoclase is a mineral belonging to the plagioclase feldspar group, which is commonly found in igneous rocks such as granite and pegmatite.

It is recognized for its distinctive striations on cleavage surfaces and typically appears in shades of white, gray, or green.

Properties of Oligoclase

Oligoclase has a hardness of 6 to 6.5 on the Mohs scale and a vitreous luster. Its chemical composition includes sodium, aluminum, silicon, and oxygen.

With its excellent cleavage and specific gravity ranging from 2.62 to 2.65, oligoclase is often used in the production of ceramics and glass.

Formation and Occurrence

Oligoclase forms in the Earth's crust through the crystallization of molten magma and is commonly found in granite, syenite, and gneiss rocks.

This mineral is often associated with other feldspar minerals like orthoclase and albite, as well as with quartz and biotite.

Uses of Oligoclase

Oligoclase is utilized in the manufacturing of ceramic tiles, bathroom fixtures, and glass products due to its attractive appearance and durability.

Furthermore, this mineral is sometimes faceted and used as a gemstone in jewelry, although it is not as commonly used for this purpose as other feldspar minerals.


Oligoclase Examples

  1. The mineral oligoclase is commonly used in jewelry making.
  2. Geologists often study the properties of oligoclase to learn more about rock formations.
  3. Miners discovered a vein of oligoclase while excavating the site.
  4. Oligoclase is known for its unique luster and coloration.
  5. Artists sometimes incorporate oligoclase into their sculptures for a touch of elegance.
  6. Oligoclase crystals can be found in various locations around the world.
  7. Some people believe that oligoclase has healing properties when worn as a pendant.
  8. Gemologists use special tools to identify different types of feldspar, including oligoclase.
  9. The price of oligoclase can vary depending on its quality and size.
  10. Collectors often seek out rare specimens of oligoclase to add to their mineral collection.


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  • Updated 02/04/2024 - 18:53:24