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Picrite and Chalk Definition


Chalk and Picrite Definition


Definition

Definition
Picrite is a variety of high-magnesium olivine basalt that is very rich in the mineral olivine   
Chalk is a soft, white, powdery limestone consisting mainly of fossil shells of foraminifers   

History
  
  

Origin
Hawaii Islands   
Unknown   

Discoverer
Unknown   
Unknown   

Etymology
From Greek pikros bitter + -ite, 19th century   
From old English cealc chalk, lime, plaster; pebble, from Greek khalix small pebble, in English transferred to the opaque, white, soft limestone   

Class
Igneous Rocks   
Sedimentary Rocks   

Sub-Class
Durable Rock, Hard Rock   
Durable Rock, Soft Rock   

Family
  
  

Group
Volcanic   
Not Applicable   

Other Categories
Fine Grained Rock, Opaque Rock   
Fine Grained Rock, Opaque Rock   

Texture >>
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Definition of Picrite and Chalk

The general Picrite and Chalk definition can be stated as: Picrite is a variety of high-magnesium olivine basalt that is very rich in the mineral olivine. On the other hand, Chalk is a soft, white, powdery limestone consisting mainly of fossil shells of foraminifers. Along with definition of Picrite and Chalk, get to know about Properties of Picrite and Chalk. Get to know more information about Picrite and Chalk origin and discoverer, etymology and class.

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History of Picrite and Chalk

The history of Picrite and Chalk 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.

Picrite and Chalk Origin and Discoverer

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

Etymology of Picrite and Chalk

Along with Picrite and Chalk definition, know more about the etymology of Picrite and Chalk. Etymology of Picrite and Chalk gives information about origin and formation of a particular rock. Know more about Formation of Picrite and Formation of Chalk. The etymology of Picrite is From Greek pikros bitter + -ite, 19th century while that of Chalk is From Greek pikros bitter + -ite, 19th century. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Picrite belongs to Igneous Rocks while Chalk belongs to Sedimentary Rocks. The sub-class, group and other categories of Picrite and Chalk are listed below.

For Picrite,

For Chalk,

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