Home
Compare Rocks


Marl and Nepheline Syenite


Nepheline Syenite and Marl


Definition

Definition
Marl is an unconsolidated sedimentary rock consisting of clay and lime   
Nepheline Syenite is a holocrystalline plutonic rock resembling syenite but containing nepheline and lacking quartz   

History
  
  

Discoverer
Unknown   
Unknown   

Etymology
From Old French marle, from Late Latin marglia   
From origin of a Palaeozoic nepheline syenite from northern Shanxi Province, China   

Class
Sedimentary Rocks   
Igneous Rocks   

Sub-Class
Durable Rock, Soft Rock   
Durable Rock, Medium Hardness Rock   

Family
  
  

Group
Not Applicable   
Plutonic   

Other Categories
Fine Grained Rock, Opaque Rock   
Fine Grained Rock, Opaque Rock   

Texture

Texture
Earthy   
Granular   

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

Maintenance
Less   
Less   

Durability
Durable   
Durable   

Water Resistant
Yes   
Yes   

Scratch Resistant
No   
No   

Stain Resistant
No   
Yes   

Wind Resistant
No   
Yes   

Acid Resistant
No   
Yes   

Appearance
Rough and Dull   
Banded and Foilated   

Uses

Architecture
  
  

Interior Uses
Decorative Aggregates, Floor Tiles   
Countertops, Decorative Aggregates, Flooring, Homes, Interior Decoration   

Exterior Uses
As Building Stone, Roof Tiles   
As Building Stone, As Facing Stone, Garden Decoration, Paving Stone   

Other Architectural Uses
Curbing   
Curbing   

Industry
  
  

Construction Industry
Cement Manufacture, Construction Aggregate, for Road Aggregate, Making natural cement, Raw material for the manufacture of mortar   
As Dimension Stone, Cement Manufacture, Construction Aggregate, for Road Aggregate, Landscaping, Making natural cement, Manufacture of Magnesium and Dolomite Refractories, Production of Glass and Ceramics   

Medical Industry
Not Yet Used   
Not Yet Used   

Antiquity Uses
Artifacts, Jewellery, Sculpture, Small Figurines   
Artifacts, Monuments, Sculpture   

Other Uses
  
  

Commercial Uses
Creating Artwork, Soil Conditioner   
Cemetery Markers, Creating Artwork   

Types

Types
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   
Borolanite and Litchfieldite   

Features
Generally rough to touch, Is one of the oldest rock, Splintery, Very fine grained rock   
Application of acids on the surface causes cloudy frosting, Available in Lots of Colors and Patterns, Dissolves in hydrochloric acid, Is one of the oldest rock   

Archaeological Significance
  
  

Monuments
Not Yet Used   
Used   

Famous Monuments
Not Applicable   
Data Not Available   

Sculpture
Used   
Used   

Famous Sculptures
Data Not Available   
Data Not Available   

Pictographs
Used   
Used   

Petroglyphs
Used   
Used   

Figurines
Used   
Used   

Fossils
Present   
Absent   

Formation

Formation
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.   
Nepheline 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
Calcite, Clay, Dolomite, Gypsum, Micas, Pyrite, Quartz   
Albite, Amphibole, Biotite, Cancrinite, Feldspar, Hornblende, Plagioclase, Pyroxene, Sodalite   

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

Transformation
  
  

Metamorphism
No   
Yes   

Types of Metamorphism
Not Applicable   
Burial Metamorphism, Impact Metamorphism   

Weathering
Yes   
Yes   

Types of Weathering
Biological Weathering, Chemical Weathering   
Biological Weathering, Chemical Weathering   

Erosion
Yes   
Yes   

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

Properties

Physical Properties
  
  

Hardness
2-3   
5.5-6   

Grain Size
Very fine-grained   
Fine Grained   

Fracture
Conchoidal   
Conchoidal to Uneven   

Streak
White   
White   

Porosity
Highly Porous   
Less Porous   

Luster
Dull   
Greasy to Dull   

Compressive Strength
Not Available   
150.00 N/mm2   
14

Cleavage
Not Available   
Poor   

Toughness
2.6   
Not Available   

Specific Gravity
2.2-2.8   
2.6   

Transparency
Opaque   
Translucent to Opaque   

Density
2.4-2.8 g/cm3   
2.6 g/cm3   

Thermal Properties
  
  

Resistance
Heat Resistant, Impact Resistant   
Heat Resistant, Impact Resistant, Wear Resistant   

Reserves

Deposits in Eastern Continents
  
  

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

Africa
Ethiopia, Kenya, Morocco, South Africa   
Angola, Egypt, Madagascar, Namibia, Nigeria, South Africa   

Europe
Austria, France, Germany, Greece, Italy, Romania, Scotland, Spain, Switzerland   
Andorra, Finland, France, Great Britain, Italy, Norway, Portugal, Spain, Sweden   

Others
Not Yet Found   
Greenland   

Deposits in Western Continents
  
  

North America
USA   
Canada, USA   

South America
Colombia, Ecuador, Peru   
Brazil, Chile, Colombia, Uruguay, Venezuela   

Deposits in Oceania Continent
  
  

Australia
New South Wales, Victoria, Western Australia   
New Zealand, Queensland, South Australia, Tasmania, Western Australia   

Summary >>
<< Reserves

All about Marl and Nepheline Syenite Properties

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

Compare Sedimentary Rocks

Fossil Rocks

Fossil Rocks

» More Fossil Rocks

Compare Sedimentary Rocks

» More Compare Sedimentary Rocks