Phyllite and Rapakivi Granite Definition

Definition of Phyllite and Rapakivi Granite

The general Phyllite and Rapakivi Granite definition can be stated as: Phyllite is a fine-grained metamorphic rock with a well-developed laminar structure, and is intermediate between slate and schist rocks. 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 Phyllite and Rapakivi Granite, get to know about Properties of Phyllite and Rapakivi Granite. Get to know more information about Phyllite and Rapakivi Granite origin and discoverer, etymology and class.

History of Phyllite and Rapakivi Granite

The history of Phyllite 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.

Phyllite and Rapakivi Granite Origin and Discoverer

Phyllite 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 Phyllite and Rapakivi Granite. In this section, you will know about Phyllite and Rapakivi Granite Origin and Discoverer. Origin of Phyllite is Unknown whereas Origin of Rapakivi Granite is Finland, Europe. It is interesting to know the name of Phyllite and Rapakivi Granite discoverer. The Discoverer of Phyllite is Unknown and the discoverer of Rapakivi Granite is Jakob Sederholm.

Etymology of Phyllite and Rapakivi Granite

Along with Phyllite and Rapakivi Granite definition, know more about the etymology of Phyllite and Rapakivi Granite. Etymology of Phyllite and Rapakivi Granite gives information about origin and formation of a particular rock. Know more about Formation of Phyllite and Formation of Rapakivi Granite. The etymology of Phyllite is From Greek phullon leaf + -ite1 while that of Rapakivi Granite is From Greek phullon leaf + -ite1. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Phyllite belongs to Metamorphic Rocks while Rapakivi Granite belongs to Igneous Rocks. The sub-class, group and other categories of Phyllite and Rapakivi Granite are listed below.

For Phyllite,

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