Chalk and Troctolite Definition

Definition of Chalk and Troctolite

The general Chalk and Troctolite definition can be stated as: Chalk is a soft, white, powdery limestone consisting mainly of fossil shells of foraminifers. On the other hand, Troctolite is a mafic intrusive rock type. It consists essentially of major but variable amounts of olivine and calcic plagioclase along with minor pyroxene. It is an olivine-rich anorthosite, or a pyroxene-depleted relative of gabbro. Along with definition of Chalk and Troctolite, get to know about Properties of Chalk and Troctolite. Get to know more information about Chalk and Troctolite origin and discoverer, etymology and class.

History of Chalk and Troctolite

The history of Chalk and Troctolite 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 Troctolite Origin and Discoverer

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

Etymology of Chalk and Troctolite

Along with Chalk and Troctolite definition, know more about the etymology of Chalk and Troctolite. Etymology of Chalk and Troctolite gives information about origin and formation of a particular rock. Know more about Formation of Chalk and Formation of Troctolite. 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 Troctolite 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 Troctolite belongs to Igneous Rocks. The sub-class, group and other categories of Chalk and Troctolite are listed below.

For Chalk,

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

For Troctolite,

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