Chalk and Nephelinite Definition

Definition of Chalk and Nephelinite

The general Chalk and Nephelinite definition can be stated as: Chalk is a soft, white, powdery limestone consisting mainly of fossil shells of foraminifers. On the other hand, Nephelinite is a fine-grained or aphanitic igneous rock made up almost entirely of nepheline and clinopyroxene (variety augite).. Along with definition of Chalk and Nephelinite, get to know about Properties of Chalk and Nephelinite. Get to know more information about Chalk and Nephelinite origin and discoverer, etymology and class.

History of Chalk and Nephelinite

The history of Chalk and Nephelinite 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.

Chalk and Nephelinite Origin and Discoverer

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

Etymology of Chalk and Nephelinite

Along with Chalk and Nephelinite definition, know more about the etymology of Chalk and Nephelinite. Etymology of Chalk and Nephelinite gives information about origin and formation of a particular rock. Know more about Formation of Chalk and Formation of Nephelinite. The etymology of Chalk is From old English cealc chalk, lime, plaster; pebble, from Greek khalix small pebble, in English transferred to the opaque, white, soft limestone while that of Nephelinite is From old English cealc chalk, lime, plaster; pebble, from Greek khalix small pebble, in English transferred to the opaque, white, soft limestone. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Chalk belongs to Sedimentary Rocks while Nephelinite belongs to Igneous Rocks. The sub-class, group and other categories of Chalk and Nephelinite are listed below.

For Chalk,

• Sub-class: Durable Rock and Soft Rock
• Group:
• Other Categories: Fine grained rock and Opaque rock

For Nephelinite,

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