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Formation of Pegmatite

Types of Hard Rocks

Novaculite
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Formation of Pegmatite

Formation
Pegmatite rock is holocrystalline, intrusive igneous rock which is formed by partial melting and dewatering during the process of metamorphism.

Composition

Mineral Content
Apatite, Beryl, Feldspar, Fluorite, Garnet, Lepidolite, Quartz, Silica, Spodumene, Topaz
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Compound Content
Aluminium Oxide, CaO, Iron(III) Oxide, FeO, Potassium Oxide, Magnesium Carbonate, MgO, Phosphorus Pentoxide
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Transformation

Metamorphism

Types of Metamorphism
Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism, Hydrothermal Metamorphism, Impact Metamorphism, Regional Metamorphism

Weathering

Types of Weathering
Biological Weathering, Chemical Weathering, Mechanical Weathering

Erosion

Types of Erosion
Chemical Erosion, Coastal Erosion, Glacier Erosion, Sea Erosion, Water Erosion, Wind Erosion

Pegmatite Formation

Pegmatite formation took place millions of years ago. There are a variety of Pegmatite Uses and the Pegmatite Reserves are found in many countries around the world. The rocks in the earth’s crust continuously undergo changes in their composition which leads to formation of other rocks. Each rock has a unique formation process. Formation of Pegmatite is explained below:

  • Pegmatite rock is holocrystalline, intrusive igneous rock which is formed by partial melting and dewatering during the process of metamorphism.

Along with Pegmatite Formation, also learn about Pegmatite composition and transformation in the next section.

Pegmatite Composition

Every rock is composed of one or more minerals. Pegmatite composition which can be further divided into mineral and compound content. The Pegmatite mineral content includes Apatite, Beryl, Feldspar, Fluorite, Garnet, Lepidolite, Quartz, Silica, Spodumene, Topaz. Its compound content includes Aluminium Oxide, CaO, Iron(III) Oxide, FeO, Potassium Oxide, Magnesium Carbonate, MgO, Phosphorus Pentoxide. You can also check out Properties of Pegmatite.

Transformation of Pegmatite

Every rock on earth undergoes transformation process. Pegmatite is a type of Igneous Rocks. Transformation of Pegmatite takes place in three steps- Metamorphism, Weathering and Erosion.

  • Metamorphism of Pegmatite:- Metamorphism is change in arrangement of minerals and texture in the pre-existing rocks. Pegmatite rock undergoes metamorphism. Unlike in formation of Pegmatite, the rock does not melt into liquid magma. Pegmatite undergoes burial metamorphism, cataclastic metamorphism, contact metamorphism, hydrothermal metamorphism, impact metamorphism and regional metamorphism.
  • Weathering of Pegmatite:- The breaking down of rocks when they come in contact with the Earth's atmosphere, ecology and water is called as weathering. Talking about weathering of Pegmatite, this rock undergoes weathering. Weathering of Igneous rocks leads to formation of Sedimentary rocks. Weathering is further classified as chemical and mechanical weathering. Pegmatite undergoes biological weathering, chemical weathering and mechanical weathering.
  • Pegmatite Erosion:- After formation of Pegmatite, let’s move on to Pegmatite Erosion. The weathered small fragments of rock are carried from one place to other by a process called erosion. Pegmatite rock undergoes Erosion. Erosion is one of the important aspects in the life cycle of a rock. Pegmatite undergoes chemical erosion, coastal erosion, glacier erosion, sea erosion, water erosion and wind erosion.