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What is Syenite?



Definition

Definition
Syenite is a coarse-grained igneous rock which is composed mainly of alkali feldspar and various ferromagnesian minerals

History

Origin
-

Discoverer
Unknown

Etymology
From French syénite, from Latin Syenites (lapis ) (stone) of Syene

Class
Igneous Rocks

Sub-Class
Durable Rock, Medium Hardness Rock

Family

Group
Plutonic

Other Categories
Coarse Grained Rock, Fine Grained Rock, Medium Grained Rock, Opaque Rock

Texture

Texture
Earthy

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

Maintenance
Less

Durability
Durable

Water Resistant
Yes

Scratch Resistant
Yes

Stain Resistant
No

Wind Resistant
Yes

Acid Resistant
Yes

Appearance
Banded and Foilated

Uses

Architecture

Interior Uses
Flooring, Homes, Hotels, Interior Decoration

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

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
Shonkinite

Features
Available in Lots of Colors and Patterns, Is one of the oldest rock, Matrix variable

Archaeological Significance

Monuments
-

Famous Monuments
-

Sculpture
-

Famous Sculptures
-

Pictographs
-

Petroglyphs
-

Figurines
-

Fossils
Absent

Formation

Formation
Syenites are formed due to alkaline igneous activities and are generally formed in thick continental crustal areas or in Cordilleran subduction zones.

Composition

Mineral Content
Amphibole, Biotite, Feldspar, Hornblade, Micas, Muscovite or Illite, Plagioclase, Pyroxene, Quartz

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

Transformation

Metamorphism
Yes

Types of Metamorphism
Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism, Hydrothermal Metamorphism, Impact Metamorphism, Regional Metamorphism

Weathering
Yes

Types of Weathering
Biological Weathering, Chemical Weathering, Mechanical Weathering

Erosion
Yes

Types of Erosion
Chemical Erosion, Coastal Erosion, Glacier Erosion, Sea Erosion, Water Erosion, Wind Erosion

Properties

Physical Properties

Hardness
5.5-6

Grain Size
Medium to Fine Coarse Grained

Fracture
-

Streak
White

Porosity
Less Porous

Luster
Subvitreous to Dull

Compressive Strength
150.00 N/mm2 22

Cleavage
Perfect

Toughness
-

Specific Gravity
2.6-2.7

Transparency
Opaque

Density
2.6-2.8 g/cm3

Thermal Properties

Specific Heat Capacity
0.92 kJ/Kg K 10

Resistance
Heat Resistant, Impact Resistant, Wear Resistant

Reserves

Deposits in Eastern Continents

Asia
China, India, Iran, Saudi Arabia, Sri Lanka, Taiwan, Thailand, Turkey, Vietnam

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

Europe
Bulgaria, England, Germany, Norway, Romania, Switzerland

Others
-

Deposits in Western Continents

North America
USA

South America
Brazil, Chile

Deposits in Oceania Continent

Australia
New Zealand, Queensland, South Australia, Western Australia

Summary >>
<< Reserves

Igneous Rocks

Learn more about Properties of Syenite

What is Syenite? In this section, we will learn more about properties of Syenite i.e. physical and thermal properties. Physical properties of Syenite include Color, Streak, Hardness, Structure, Cleavage, Fracture, Luster, Specific Gravity etc. The strength of Syenite is 150.00 N/mm2. Streak of Syenite is white while its cleavage is perfect. Luster of Syenite is subvitreous to dull and its fracture is . Syenite is opaque in nature. Know all about Syenite, What is Syenite, its composition, features, facts and reserves in next sections.

Know about Composition of Syenite

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

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