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Marl and Gabbro


Gabbro and Marl


Definition

Definition
Marl is an unconsolidated sedimentary rock consisting of clay and lime   
Gabbro is an intrusive igneous rock which is chemically equivalent to plutonic Basalt   

History
  
  

Origin
Unknown   
Germany   

Discoverer
Unknown   
Christian Leopold von Buch   

Etymology
From Old French marle, from Late Latin marglia   
From Latin glaber bare, smooth, bald   

Class
Sedimentary Rocks   
Igneous Rocks   

Sub-Class
Durable Rock, Soft Rock   
Durable Rock, Hard Rock   

Family
  
  

Group
Not Applicable   
Plutonic   

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

Texture

Texture
Earthy   
Phaneritic   

Color
Beige, Brown, Green, Grey, White   
Dark Grey to Black   

Maintenance
Less   
Less   

Durability
Durable   
Durable   

Water Resistant
Yes   
Yes   

Scratch Resistant
No   
Yes   

Stain Resistant
No   
Yes   

Wind Resistant
No   
Yes   

Acid Resistant
No   
Yes   

Appearance
Rough and Dull   
Veined and Shiny   

Uses

Architecture
  
  

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

Exterior Uses
As Building Stone, Roof Tiles   
As Building Stone, As Facing Stone, Garden Decoration, Office Buildings, 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, Building houses or walls, Cement Manufacture, Construction Aggregate, for Road Aggregate   

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, Commemorative Tablets, Laboratory bench tops, Jewelry, Sea Defence, Tombstones   

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   
Not Available   

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

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   
Not Used   

Petroglyphs
Used   
Not 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.   
Gabbro, a mafic rock, forms due to cooling and crystallization of magma underneath Earth's surface.   

Composition
  
  

Mineral Content
Calcite, Clay, Dolomite, Gypsum, Micas, Pyrite, Quartz   
Augite, Olivine, Plagioclase, Pyroxene   

Compound Content
Aluminium Oxide, NaCl, CaO, Iron(III) Oxide, Silicon Dioxide   
Aluminium Oxide, CaO, Chromium(III) Oxide, Iron(III) Oxide, Potassium Oxide, MgO, Sodium Oxide, Silicon Dioxide, Sulfur Trioxide   

Transformation
  
  

Metamorphism
No   
Yes   

Types of Metamorphism
Not Applicable   
Impact Metamorphism   

Weathering
Yes   
Yes   

Types of Weathering
Biological Weathering, Chemical Weathering   
Chemical Weathering   

Erosion
Yes   
Yes   

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

Properties

Physical Properties
  
  

Hardness
2-3   
7   

Grain Size
Very fine-grained   
Coarse Grained   

Fracture
Conchoidal   
Conchoidal   

Streak
White   
Black   

Porosity
Highly Porous   
Highly Porous   

Luster
Dull   
Not Available   

Compressive Strength
Not Available   
225.00 N/mm2   
7

Cleavage
Not Available   
Not Available   

Toughness
2.6   
1.6   

Specific Gravity
2.2-2.8   
2.86-2.87   

Transparency
Opaque   
Opaque   

Density
2.4-2.8 g/cm3   
2.7-3.3 g/cm3   

Thermal Properties
  
  

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

Reserves

Deposits in Eastern Continents
  
  

Asia
India, Pakistan, Russia   
India, Russia   

Africa
Ethiopia, Kenya, Morocco, South Africa   
South Africa   

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

Others
Not Yet Found   
Greenland   

Deposits in Western Continents
  
  

North America
USA   
Canada, USA   

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

Deposits in Oceania Continent
  
  

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

Summary >>
<< Reserves

All about Marl and Gabbro Properties

Know all about Marl and Gabbro properties here. All properties of rocks are important as they define the type of rock and its application. Marl belongs to Sedimentary Rocks while Gabbro belongs to Igneous Rocks.Texture of Marl is Earthy whereas that of Gabbro is Phaneritic. Marl appears Rough and Dull and Gabbro appears Veined and Shiny. The luster of Marl is dull while that of Gabbro is not available. Marl is available in beige, brown, green, grey, white colors whereas Gabbro is available in dark grey to black colors. The commercial uses of Marl are creating artwork, soil conditioner and that of Gabbro are cemetery markers, commemorative tablets, laboratory bench tops, jewelry, sea defence, tombstones.

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