Syenite and Epidosite

Syenite

Epidosite

Definition

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

Epidosite is a highly altered epidote and quartz bearing rock which is a type of metasomatite, essentially altered basalt

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

Volcanic

Other Categories

Coarse Grained Rock, Fine Grained Rock, Medium Grained Rock, Opaque Rock

Coarse Grained Rock, Fine Grained Rock, Opaque Rock

Texture

Earthy

Glassy, Massive, Porphyritic, Scoriaceous, Vesicular

Color

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

Black, Brown, Light to Dark Grey

Maintenance

Less

Durability

Durable

Water Resistant

Yes

Scratch Resistant

Yes

Stain Resistant

Yes

Wind Resistant

Yes

Acid Resistant

Yes

Appearance

Banded and Foilated

Dull and Soft

Uses

Architecture

Interior Uses

Flooring, Homes, Hotels, Interior Decoration

Decorative Aggregates, Floor Tiles, Homes, Hotels, Interior Decoration

Exterior Uses

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

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

As Dimension Stone, Cobblestones, Rail Track Ballast, Roadstone

Medical Industry

Antiquity Uses

Artifacts, Monuments, Sculpture, Small Figurines

Other Uses

Commercial Uses

Cemetery Markers, Creating Artwork

Commemorative Tablets, Creating Artwork

Types

Shonkinite

Alkaline Basalt, Boninite, High Alumina Basalt, Mid Ocean Ridge Basalt (MORB), Tholeiitic Basalt, Basaltic trachyandesite, Mugearite and Shoshonite

Features

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

Has High structural resistance against erosion and climate, Very fine grained rock

Archaeological Significance

Monuments

Famous Monuments

Sculpture

Famous Sculptures

Pictographs

Petroglyphs

Figurines

Fossils

Absent

Formation

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

Epidosite 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

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

Olivine, Plagioclase, Pyroxene

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

Burial Metamorphism, Cataclastic Metamorphism, Hydrothermal Metamorphism, Impact 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

Fine to Coarse Grained

Fracture

Conchoidal

Streak

White

White to Grey

Porosity

Less Porous

Luster

Subvitreous to Dull

Compressive Strength

150.00 N/mm²

160.00 N/mm²

Cleavage

Perfect

Toughness

2.3

Specific Gravity

2.6-2.7

2.8-3

Transparency

Opaque

Density

2.6-2.8 g/cm³

-9999 g/cm³

Thermal Properties

Specific Heat Capacity

0.92 kJ/Kg K

0.84 kJ/Kg K

Resistance

Heat Resistant, Impact Resistant, Wear Resistant

Heat Resistant, Pressure Resistant, Wear Resistant

Reserves

Deposits in Eastern Continents

Asia

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

India, Russia

Africa

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

South Africa

Europe

Bulgaria, England, Germany, Norway, Romania, Switzerland

Iceland

Others

Deposits in Western Continents

North America

USA

Canada, USA

South America

Brazil, Chile

Brazil

Deposits in Oceania Continent

Australia

New Zealand, Queensland, South Australia, Western Australia

Summary >>

<< Reserves

All about Syenite and Epidosite Properties

Know all about Syenite and Epidosite properties here. All properties of rocks are important as they define the type of rock and its application. Syenite and Epidosite belong to Igneous Rocks.Texture of Syenite is Earthy whereas that of Epidosite is Glassy, Massive, Porphyritic, Scoriaceous, Vesicular. Syenite appears Banded and Foilated and Epidosite appears Dull and Soft. The luster of Syenite is subvitreous to dull while that of Epidosite is . Syenite is available in brown, buff, cream, green, grey, pink, white colors whereas Epidosite is available in black, brown, light to dark grey colors. The commercial uses of Syenite are cemetery markers, creating artwork and that of Epidosite are commemorative tablets, creating artwork.

Compare Igneous Rocks

Igneous Rocks

Carbonatite
Definition | Texture | Uses | Types

Norite
Definition | Texture | Uses | Types

Pyroxenite
Definition | Texture | Uses | Types

» More Igneous Rocks

Compare Igneous Rocks

Epidosite vs Dunite
Definition | Texture | Uses | Types

Epidosite vs Monzonite
Definition | Texture | Uses | Types

Epidosite vs Anorthosite
Definition | Texture | Uses | Types

» More Compare Igneous Rocks