Chalk and Rapakivi Granite Definition

Definition of Chalk and Rapakivi Granite

The general Chalk and Rapakivi Granite definition can be stated as: Chalk is a soft, white, powdery limestone consisting mainly of fossil shells of foraminifers. On the other hand, Rapakivi Granite is a hornblende-biotite Granite containing large rounded crystals of orthoclase which are mantled with oligoclase. Along with definition of Chalk and Rapakivi Granite, get to know about Properties of Chalk and Rapakivi Granite. Get to know more information about Chalk and Rapakivi Granite origin and discoverer, etymology and class.

History of Chalk and Rapakivi Granite

The history of Chalk and Rapakivi Granite 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 Rapakivi Granite Origin and Discoverer

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

Etymology of Chalk and Rapakivi Granite

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

For Chalk,

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

For Rapakivi Granite,

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