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Adakite and Marl


Marl and Adakite


Definition

Definition
Adakite is an intermediate to felsic volcanic rock that has geochemical characteristics of magma which is said to be formed by partial melting of altered basalt that is subducted below volcanic arcs   
Marl is an unconsolidated sedimentary rock consisting of clay and lime   

History
  
  

Origin
Adak, Aleutian Islands   
Unknown   

Discoverer
Defant and Drummond   
Unknown   

Etymology
From Adak, Aleutian Islands   
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
Volcanic   
Not Applicable   

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

Texture

Texture
Porphyritic   
Earthy   

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

Maintenance
Less   
Less   

Durability
Durable   
Durable   

Water Resistant
No   
Yes   

Scratch Resistant
No   
No   

Stain Resistant
No   
No   

Wind Resistant
Yes   
No   

Acid Resistant
Yes   
No   

Appearance
Dull and Soft   
Rough and Dull   

Uses

Architecture
  
  

Interior Uses
Decorative Aggregates, Floor Tiles, Homes, Hotels, Kitchens   
Decorative Aggregates, Floor Tiles   

Exterior Uses
As Building Stone, As Facing Stone, Office Buildings   
As Building Stone, Roof Tiles   

Other Architectural Uses
Whetstones   
Curbing   

Industry
  
  

Construction Industry
As Dimension Stone, Cobblestones, Rail Track Ballast, Roadstone   
Cement Manufacture, Construction Aggregate, for Road Aggregate, Making natural cement, Raw material for the manufacture of mortar   

Medical Industry
Not Yet Used   
Not Yet Used   

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

Other Uses
  
  

Commercial Uses
Commemorative Tablets, Pottery, Used in aquariums   
Creating Artwork, Soil Conditioner   

Types

Types
Not Available   
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
Has High structural resistance against erosion and climate, Host rock for Diamond, Very fine grained rock   
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   
Used   

Famous Sculptures
Data Not Available   
Data Not Available   

Pictographs
Used   
Used   

Petroglyphs
Used   
Used   

Figurines
Used   
Used   

Fossils
Absent   
Present   

Formation

Formation
Adakite rocks are formed when the hydrous fluids are released from minerals that break down in metamorphosed basalt, and rise into the mantle they initiate partial melting.   
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
Olivine, Plagioclase, Pyroxene   
Calcite, Clay, Dolomite, Gypsum, Micas, Pyrite, Quartz   

Compound Content
Aluminium Oxide, MgO, Silicon Dioxide   
Aluminium Oxide, NaCl, CaO, Iron(III) Oxide, Silicon Dioxide   

Transformation
  
  

Metamorphism
Yes   
No   

Types of Metamorphism
Cataclastic Metamorphism, Contact Metamorphism, Impact Metamorphism, Regional Metamorphism   
Not Applicable   

Weathering
Yes   
Yes   

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

Erosion
Yes   
Yes   

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

Properties

Physical Properties
  
  

Hardness
3-4   
2-3   

Grain Size
Fine to Medium Grained   
Very fine-grained   

Fracture
Conchoidal   
Conchoidal   

Streak
Bluish Black   
White   

Porosity
Less Porous   
Highly Porous   

Luster
Grainy, Pearly and Vitreous   
Dull   

Cleavage
Not Available   
Not Available   

Toughness
Not Available   
2.6   

Specific Gravity
Not Available   
2.2-2.8   

Transparency
Opaque   
Opaque   

Density
Not Available   
2.4-2.8 g/cm3   

Thermal Properties
  
  

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

Reserves

Deposits in Eastern Continents
  
  

Asia
India, Russia   
India, Pakistan, Russia   

Africa
Ethiopia, Somalia, South Africa   
Ethiopia, Kenya, Morocco, South Africa   

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

Others
Not Yet Found   
Not Yet Found   

Deposits in Western Continents
  
  

North America
Canada, USA   
USA   

South America
Brazil   
Colombia, Ecuador, Peru   

Deposits in Oceania Continent
  
  

Australia
Not Yet Found   
New South Wales, Victoria, Western Australia   

Summary >>
<< Reserves

All about Adakite and Marl Properties

Know all about Adakite and Marl properties here. All properties of rocks are important as they define the type of rock and its application. Adakite belongs to Igneous Rocks while Marl belongs to Sedimentary Rocks.Texture of Adakite is Porphyritic whereas that of Marl is Earthy. Adakite appears Dull and Soft and Marl appears Rough and Dull. The luster of Adakite is grainy, pearly and vitreous while that of Marl is dull. Adakite is available in black, brown, light to dark grey colors whereas Marl is available in beige, brown, green, grey, white colors. The commercial uses of Adakite are commemorative tablets, pottery, used in aquariums and that of Marl are creating artwork, soil conditioner.

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