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Nepheline Syenite
Nepheline Syenite

Pseudotachylite
Pseudotachylite



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Nepheline Syenite
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Nepheline Syenite and Pseudotachylite Definition

1 Definition
1.1 Definition
Nepheline Syenite is a holocrystalline plutonic rock resembling syenite but containing nepheline and lacking quartz
Very fine grained fault rock which is composed of glassy matrix that often contains inclusions of wall-rock fragments.
1.2 History
1.2.1 Origin
Unknown
USA
1.2.2 Discoverer
Unknown
Unknown
1.3 Etymology
From origin of a Palaeozoic nepheline syenite from northern Shanxi Province, China
From pseudo- +‎ tachylite, a glassy rock generated by frictional heat within faults.
1.4 Class
Igneous Rocks
Metamorphic Rocks
1.4.1 Sub-Class
Durable Rock, Medium Hardness Rock
Durable Rock, Hard Rock
1.5 Family
1.5.1 Group
Plutonic
Not Applicable
1.6 Other Categories
Fine Grained Rock, Opaque Rock
Fine Grained Rock, Opaque Rock

Definition of Nepheline Syenite and Pseudotachylite

The general Nepheline Syenite and Pseudotachylite definition can be stated as: Nepheline Syenite is a holocrystalline plutonic rock resembling syenite but containing nepheline and lacking quartz. On the other hand, Very fine grained fault rock which is composed of glassy matrix that often contains inclusions of wall-rock fragments.. Along with definition of Nepheline Syenite and Pseudotachylite, get to know about Properties of Nepheline Syenite and Pseudotachylite. Get to know more information about Nepheline Syenite and Pseudotachylite origin and discoverer, etymology and class.

History of Nepheline Syenite and Pseudotachylite

The history of Nepheline Syenite and Pseudotachylite gives information about where the rock was found and who was its discoverer. Almost each and every aspect of Earth's history is recorded in rocks be it the volcanoes which were erupted or the plants, animals and organisms which are now extinct, as rocks are present from millions of years.

Nepheline Syenite and Pseudotachylite Origin and Discoverer

Nepheline Syenite and Pseudotachylite definition gives us a brief idea about the two rocks. In some cases, the definition also gives summary about the Formation of Nepheline Syenite and Pseudotachylite. In this section, you will know about Nepheline Syenite and Pseudotachylite Origin and Discoverer. Origin of Nepheline Syenite is Unknown whereas Origin of Pseudotachylite is USA. It is interesting to know the name of Nepheline Syenite and Pseudotachylite discoverer. The discoverer of Nepheline Syenite and Pseudotachylite are Unknown.

Etymology of Nepheline Syenite and Pseudotachylite

Along with Nepheline Syenite and Pseudotachylite definition, know more about the etymology of Nepheline Syenite and Pseudotachylite. Etymology of Nepheline Syenite and Pseudotachylite gives information about origin and formation of a particular rock. Know more about Formation of Nepheline Syenite and Formation of Pseudotachylite. The etymology of Nepheline Syenite is From origin of a Palaeozoic nepheline syenite from northern Shanxi Province, China while that of Pseudotachylite is From origin of a Palaeozoic nepheline syenite from northern Shanxi Province, China. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Nepheline Syenite belongs to Igneous Rocks while Pseudotachylite belongs to Metamorphic Rocks. The sub-class, group and other categories of Nepheline Syenite and Pseudotachylite are listed below.

For Nepheline Syenite,

  • Sub-class: Durable Rock and Medium Hardness Rock
  • Group: Plutonic
  • Other Categories: Fine grained rock and Opaque rock

For Pseudotachylite,

  • Sub-class: Durable Rock and Hard Rock
  • Group: Not applicable
  • Other Categories: Fine grained rock and Opaque rock