Syenite and Marl

Syenite

Marl

Definition

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

Marl is an unconsolidated sedimentary rock consisting of clay and lime

History

Discoverer

Unknown

Etymology

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

From Old French marle, from Late Latin marglia

Class

Igneous Rocks

Sedimentary Rocks

Sub-Class

Durable Rock, Medium Hardness Rock

Durable Rock, Soft Rock

Family

Group

Plutonic

Not Applicable

Other Categories

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

Fine Grained Rock, Opaque Rock

Texture

Earthy

Color

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

Beige, Brown, Green, Grey, White

Maintenance

Less

Durability

Durable

Water Resistant

Yes

Scratch Resistant

Yes

Stain Resistant

Wind Resistant

Yes

Acid Resistant

Yes

Appearance

Banded and Foilated

Rough and Dull

Uses

Architecture

Interior Uses

Flooring, Homes, Hotels, Interior Decoration

Decorative Aggregates, Floor Tiles

Exterior Uses

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

As Building Stone, Roof Tiles

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

Cement Manufacture, Construction Aggregate, for Road Aggregate, Making natural cement, Raw material for the manufacture of mortar

Medical Industry

Not Yet Used

Antiquity Uses

Artifacts, Monuments, Sculpture, Small Figurines

Artifacts, Jewellery, Sculpture, Small Figurines

Other Uses

Commercial Uses

Cemetery Markers, Creating Artwork

Creating Artwork, Soil Conditioner

Types

Shonkinite

Clay Marl ,Blue Marl, Red Marl, High Bank Marl, Shell Layer Marl, Under Shell Layer Marl, Sand Marl, Green Marl, Grey Marl and Clayey Marl

Features

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

Generally rough to touch, Is one of the oldest rock, Splintery, Very fine grained rock

Archaeological Significance

Monuments

Used

Not Yet Used

Famous Monuments

Data Not Available

Not Applicable

Sculpture

Used

Famous Sculptures

Data Not Available

Pictographs

Used

Petroglyphs

Used

Figurines

Used

Fossils

Absent

Present

Formation

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

Marl forms when very fine-grained clay particles are deposited in water which settles at the bottom of water bodies and are compacted by overlying sediment; the water squeezes out and hence forming Marl rock.

Composition

Mineral Content

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

Calcite, Clay, Dolomite, Gypsum, Micas, Pyrite, Quartz

Compound Content

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

Aluminium Oxide, NaCl, CaO, Iron(III) Oxide, Silicon Dioxide

Transformation

Metamorphism

Yes

Types of Metamorphism

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

Not Applicable

Weathering

Yes

Types of Weathering

Biological Weathering, Chemical Weathering, Mechanical Weathering

Biological Weathering, Chemical Weathering

Erosion

Yes

Types of Erosion

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

Chemical Erosion, Coastal Erosion, Water Erosion, Wind Erosion

Properties

Physical Properties

Hardness

5.5-6

2-3

Grain Size

Medium to Fine Coarse Grained

Very fine-grained

Fracture

Not Available

Conchoidal

Streak

White

Porosity

Less Porous

Highly Porous

Luster

Subvitreous to Dull

Dull

Compressive Strength

150.00 N/mm²

Not Available

Cleavage

Perfect

Not Available

Toughness

Not Available

2.6

Specific Gravity

2.6-2.7

2.2-2.8

Transparency

Opaque

Density

2.6-2.8 g/cm³

2.4-2.8 g/cm³

Thermal Properties

Specific Heat Capacity

0.92 kJ/Kg K

Not Available

Resistance

Heat Resistant, Impact Resistant, Wear Resistant

Heat Resistant, Impact Resistant

Reserves

Deposits in Eastern Continents

Asia

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

India, Pakistan, Russia

Africa

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

Ethiopia, Kenya, Morocco, South Africa

Europe

Bulgaria, England, Germany, Norway, Romania, Switzerland

Austria, France, Germany, Greece, Italy, Romania, Scotland, Spain, Switzerland

Others

Not Yet Found

Deposits in Western Continents

North America

USA

South America

Brazil, Chile

Colombia, Ecuador, Peru

Deposits in Oceania Continent

Australia

New Zealand, Queensland, South Australia, Western Australia

New South Wales, Victoria, Western Australia

Summary >>

<< Reserves

All about Syenite and Marl Properties

Know all about Syenite and Marl properties here. All properties of rocks are important as they define the type of rock and its application. Syenite belongs to Igneous Rocks while Marl belongs to Sedimentary Rocks.Texture of Syenite is Earthy whereas that of Marl is Earthy. Syenite appears Banded and Foilated and Marl appears Rough and Dull. The luster of Syenite is subvitreous to dull while that of Marl is dull. Syenite is available in brown, buff, cream, green, grey, pink, white colors whereas Marl is available in beige, brown, green, grey, white colors. The commercial uses of Syenite are cemetery markers, creating artwork and that of Marl are creating artwork, soil conditioner.