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Rapakivi Granite
Rapakivi Granite

Chert
Chert



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Rapakivi Granite
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Chert

Rapakivi Granite and Chert Definition

1 Definition
1.1 Definition
Rapakivi Granite is a hornblende-biotite Granite containing large rounded crystals of orthoclase which are mantled with oligoclase
Chert is a hard, dark, opaque sedimentary rock which is composed of silica with an amorphous fine-grained texture
1.2 History
1.2.1 Origin
Finland, Europe
Unknown
1.2.2 Discoverer
Jakob Sederholm
Unknown
1.3 Etymology
From Finnish Rapakivi which stands for crumbly rock
From flint-like quartz, 1670s, of unknown origin- a local term, which has been taken into geological use
1.4 Class
Igneous Rocks
Sedimentary Rocks
1.4.1 Sub-Class
Durable Rock, Hard Rock
Durable Rock, Hard Rock
1.5 Family
1.5.1 Group
Plutonic
Not Applicable
1.6 Other Categories
Coarse Grained Rock, Opaque Rock
Fine Grained Rock, Opaque Rock

Definition of Rapakivi Granite and Chert

The general Rapakivi Granite and Chert definition can be stated as: Rapakivi Granite is a hornblende-biotite Granite containing large rounded crystals of orthoclase which are mantled with oligoclase. On the other hand, Chert is a hard, dark, opaque sedimentary rock which is composed of silica with an amorphous fine-grained texture. Along with definition of Rapakivi Granite and Chert, get to know about Properties of Rapakivi Granite and Chert. Get to know more information about Rapakivi Granite and Chert origin and discoverer, etymology and class.

History of Rapakivi Granite and Chert

The history of Rapakivi Granite and Chert 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.

Rapakivi Granite and Chert Origin and Discoverer

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

Etymology of Rapakivi Granite and Chert

Along with Rapakivi Granite and Chert definition, know more about the etymology of Rapakivi Granite and Chert. Etymology of Rapakivi Granite and Chert gives information about origin and formation of a particular rock. Know more about Formation of Rapakivi Granite and Formation of Chert. The etymology of Rapakivi Granite is From Finnish Rapakivi which stands for crumbly rock while that of Chert is From Finnish Rapakivi which stands for crumbly rock. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Rapakivi Granite belongs to Igneous Rocks while Chert belongs to Sedimentary Rocks. The sub-class, group and other categories of Rapakivi Granite and Chert are listed below.

For Rapakivi Granite,

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

For Chert,

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