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What is Ijolite?



Definition

Definition
Ijolite is an intrusive igneous rock which is composed mainly of nepheline and an alkali pyroxene, usually aegirine-augite

History

Origin
Finland, Europe

Discoverer
Unknown

Etymology
From the first syllable of the Finnish words Ii-vaara, Iijoki, &c. commonly used geographical names in Finland, and the Gr. Xiflos, a stone

Class
Igneous Rocks

Sub-Class
Durable Rock, Medium Hardness Rock

Family

Group
Plutonic

Other Categories
Coarse Grained Rock, Opaque Rock

Texture

Texture
Earthy, Granular

Color
Brown, Buff, Cream, Green, Grey, Pink, White

Maintenance
Less

Durability
Durable

Water Resistant
Yes

Scratch Resistant
Yes

Stain Resistant
No

Wind Resistant
No

Acid Resistant
No

Appearance
Banded and Foilated

Uses

Architecture

Interior Uses
Decorative Aggregates, Entryways, Floor Tiles, Flooring, Homes, Interior Decoration, Kitchens

Exterior Uses
As Building Stone, As Facing Stone, Garden Decoration, Office Buildings, Paving Stone

Other Architectural Uses
Curbing

Industry

Construction Industry
As Dimension Stone, Cement Manufacture, Construction Aggregate, for Road Aggregate, Landscaping, Making natural cement, Manufacture of Magnesium and Dolomite Refractories

Medical Industry
-

Antiquity Uses
Artifacts, Monuments, Sculpture, Small Figurines

Other Uses

Commercial Uses
Cemetery Markers, Creating Artwork

Types

Types
Alkaline rock

Features
Application of acids on the surface causes cloudy frosting, Available in Lots of Colors and Patterns, Is one of the oldest rock

Archaeological Significance

Monuments
-

Famous Monuments
-

Sculpture
-

Famous Sculptures
-

Pictographs
-

Petroglyphs
-

Figurines
-

Fossils
Absent

Formation

Formation
Ijolite is a fine-grained, hard rock which is a type of metasomatite, essentially altered basalt. It forms with or without crystallization, either below the surface as intrusive rocks or on the surface as extrusive rocks.

Composition

Mineral Content
Albite, Amphibole, Biotite, Cancrinite, Feldspar, Hornblende, Plagioclase, Pyroxene, Sodalite

Compound Content
Aluminium Oxide, CaO, Iron(III) Oxide, FeO, Potassium Oxide, MgO, MnO, Sodium Oxide, Phosphorus Pentoxide, Silicon Dioxide

Transformation

Metamorphism
Yes

Types of Metamorphism
Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism

Weathering
Yes

Types of Weathering
Biological Weathering, Chemical Weathering

Erosion
Yes

Types of Erosion
Chemical Erosion, Water Erosion, Wind Erosion

Properties

Physical Properties

Hardness
5.5-6

Grain Size
Coarse Grained

Fracture
Conchoidal to Uneven

Streak
White

Porosity
Less Porous

Luster
Greasy to Dull

Compressive Strength
190.00 N/mm2 15

Cleavage
-

Toughness
-

Specific Gravity
2.6-2.76

Transparency
Opaque

Density
2.6 g/cm3

Thermal Properties

Specific Heat Capacity
0.84 kJ/Kg K 15

Resistance
Heat Resistant, Impact Resistant, Wear Resistant

Reserves

Deposits in Eastern Continents

Asia
Indonesia, Iran, Russia, Saudi Arabia, Sri Lanka, Taiwan, Thailand, Turkey, Vietnam

Africa
Angola, Egypt, Madagascar, Namibia, Nigeria, South Africa

Europe
England, Finland, Germany, Great Britain, Greece, United Kingdom

Others
-

Deposits in Western Continents

North America
Canada, USA

South America
Colombia

Deposits in Oceania Continent

Australia
New Zealand, Queensland, Western Australia

Summary >>
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Igneous Rocks

Learn more about Properties of Ijolite

What is Ijolite? In this section, we will learn more about properties of Ijolite i.e. physical and thermal properties. Physical properties of Ijolite include Color, Streak, Hardness, Structure, Cleavage, Fracture, Luster, Specific Gravity etc. The strength of Ijolite is 190.00 N/mm2. Streak of Ijolite is white while its cleavage is . Luster of Ijolite is greasy to dull and its fracture is conchoidal to uneven. Ijolite is opaque in nature. Know all about Ijolite, What is Ijolite, its composition, features, facts and reserves in next sections.

Know about Composition of Ijolite

What is Ijolite composed of? Get to know about composition of Ijolite here. Ijolite definition gives information about the Formation of Ijolite and its composition.The composition of Ijolite can be further divided into mineral and compound content. The mineral content of Ijolite rock includes Albite, Amphibole, Biotite, Cancrinite, Feldspar, Hornblende, Plagioclase, Pyroxene, Sodalite and The compound content of Ijolite rock includes Aluminium Oxide, CaO, Iron(III) Oxide, FeO, Potassium Oxide, MgO, MnO, Sodium Oxide, Phosphorus Pentoxide, Silicon Dioxide. Almost all rocks undergo transformation process. Know all about Ijolite rock in next section.

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