Syenite and Basaltic Trachyandesite

Syenite

Definition

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

Basaltic Trachyandesite is an extrusive igneous rock which is a type of Basalt rock and is formed by the rapid cooling of basaltic lava exposed at or very near the Earth's surface

History

Discoverer

Unknown

Etymology

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

From its mineral and compound content and its relation with Basalt and Andesite rock

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

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

Floor Tiles, Homes, Hotels, Kitchens

Exterior Uses

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

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

Other Architectural Uses

Curbing

Curbing, Whetstones

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

Not Yet Used

Antiquity Uses

Artifacts, Monuments, Sculpture, Small Figurines

Artifacts, Monuments

Other Uses

Commercial Uses

Cemetery Markers, Creating Artwork

An Oil and Gas Reservoir, 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

Used

Not Yet Used

Famous Monuments

Data Not Available

Not Applicable

Sculpture

Used

Not Yet Used

Famous Sculptures

Data Not Available

Not Applicable

Pictographs

Used

Petroglyphs

Used

Figurines

Used

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.

Basaltic Trachandesite is a fine-grained, hard rock that forms when bits of lava shoot out of volcanoes.

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

Contact Metamorphism

Weathering

Yes

Types of Weathering

Biological Weathering, Chemical Weathering, Mechanical Weathering

Biological Weathering

Erosion

Yes

Types of Erosion

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

Not Available

Properties

Physical Properties

Hardness

5.5-6

Grain Size

Medium to Fine Coarse Grained

Fine Grained

Fracture

Not Available

Conchoidal

Streak

White

White to Grey

Porosity

Less Porous

Luster

Subvitreous to Dull

Not Available

Compressive Strength

150.00 N/mm²

37.50 N/mm²

Cleavage

Perfect

Not Available

Toughness

Not Available

2.3

Specific Gravity

2.6-2.7

2.8-3

Transparency

Opaque

Density

2.6-2.8 g/cm³

2.9-3.1 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

Not Yet Found

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

Not Yet Found

Summary >>

<< Reserves

All about Syenite and Basaltic Trachyandesite Properties

Know all about Syenite and Basaltic Trachyandesite properties here. All properties of rocks are important as they define the type of rock and its application. Syenite and Basaltic Trachyandesite belong to Igneous Rocks.Texture of Syenite is Earthy whereas that of Basaltic Trachyandesite is Glassy, Massive, Porphyritic, Scoriaceous, Vesicular. Syenite appears Banded and Foilated and Basaltic Trachyandesite appears Dull and Soft. The luster of Syenite is subvitreous to dull while that of Basaltic Trachyandesite is not available. Syenite is available in brown, buff, cream, green, grey, pink, white colors whereas Basaltic Trachyandesite is available in black, brown, light to dark grey colors. The commercial uses of Syenite are cemetery markers, creating artwork and that of Basaltic Trachyandesite are an oil and gas reservoir, commemorative tablets, creating artwork.